<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:62202905-c75a-4563-baa7-20b710616a2c,g:703966ce-46f7-4a5b-8a4a-d38681291f07-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:dec="http://dgoc.com/20250630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://dgoc.com/20250630">
  <xs:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
  <xs:import namespace="https://xbrl.ifrs.org/taxonomy/2025-03-27/ifrs-full" schemaLocation="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dec-20250630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dec-20250630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dec-20250630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="dec-20250630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://dgoc.com/role/Cover">
        <link:definition>0000001 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementofComprehensiveIncomeUnaudited" roleURI="http://dgoc.com/role/CondensedConsolidatedStatementofComprehensiveIncomeUnaudited">
        <link:definition>9952151 - Statement - Condensed Consolidated Statement of Comprehensive Income (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementofComprehensiveIncomeUnaudited_1" roleURI="http://dgoc.com/role/CondensedConsolidatedStatementofComprehensiveIncomeUnaudited_1">
        <link:definition>9952151 - Statement - Condensed Consolidated Statement of Comprehensive Income (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementofFinancialPositionUnaudited" roleURI="http://dgoc.com/role/CondensedConsolidatedStatementofFinancialPositionUnaudited">
        <link:definition>9952152 - Statement - Condensed Consolidated Statement of Financial&#160;Position (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementofChangesinEquityUnaudited" roleURI="http://dgoc.com/role/CondensedConsolidatedStatementofChangesinEquityUnaudited">
        <link:definition>9952153 - Statement - Condensed Consolidated Statement of Changes in Equity (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CondensedConsolidatedStatementofCashFlowsUnaudited" roleURI="http://dgoc.com/role/CondensedConsolidatedStatementofCashFlowsUnaudited">
        <link:definition>9952154 - Statement - Condensed Consolidated Statement of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralInformation" roleURI="http://dgoc.com/role/GeneralInformation">
        <link:definition>9952155 - Disclosure - General Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPreparation" roleURI="http://dgoc.com/role/BasisofPreparation">
        <link:definition>9952156 - Disclosure - Basis of Preparation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MaterialAccountingPolicies" roleURI="http://dgoc.com/role/MaterialAccountingPolicies">
        <link:definition>9952157 - Disclosure - Material Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestitures" roleURI="http://dgoc.com/role/AcquisitionsDivestitures">
        <link:definition>9952158 - Disclosure - Acquisitions &amp; Divestitures</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://dgoc.com/role/Revenue">
        <link:definition>9952159 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ExpensesbyNature" roleURI="http://dgoc.com/role/ExpensesbyNature">
        <link:definition>9952160 - Disclosure - Expenses by Nature</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Taxation" roleURI="http://dgoc.com/role/Taxation">
        <link:definition>9952161 - Disclosure - Taxation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstruments" roleURI="http://dgoc.com/role/DerivativeFinancialInstruments">
        <link:definition>9952162 - Disclosure - Derivative Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareCapital" roleURI="http://dgoc.com/role/ShareCapital">
        <link:definition>9952163 - Disclosure - Share Capital</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Dividends" roleURI="http://dgoc.com/role/Dividends">
        <link:definition>9952164 - Disclosure - Dividends</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligations" roleURI="http://dgoc.com/role/AssetRetirementObligations">
        <link:definition>9952165 - Disclosure - Asset Retirement Obligations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Borrowings" roleURI="http://dgoc.com/role/Borrowings">
        <link:definition>9952166 - Disclosure - Borrowings</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueFinancialInstruments" roleURI="http://dgoc.com/role/FairValueFinancialInstruments">
        <link:definition>9952167 - Disclosure - Fair Value &amp; Financial Instruments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsContingencies" roleURI="http://dgoc.com/role/CommitmentsContingencies">
        <link:definition>9952168 - Disclosure - Commitments &amp; Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactions" roleURI="http://dgoc.com/role/RelatedPartyTransactions">
        <link:definition>9952169 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvents" roleURI="http://dgoc.com/role/SubsequentEvents">
        <link:definition>9952170 - Disclosure - Subsequent Events</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPreparationPolicies" roleURI="http://dgoc.com/role/BasisofPreparationPolicies">
        <link:definition>9955511 - Disclosure - Basis of Preparation (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPreparationTables" roleURI="http://dgoc.com/role/BasisofPreparationTables">
        <link:definition>9955512 - Disclosure - Basis of Preparation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MaterialAccountingPoliciesTables" roleURI="http://dgoc.com/role/MaterialAccountingPoliciesTables">
        <link:definition>9955513 - Disclosure - Material Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestituresTables" roleURI="http://dgoc.com/role/AcquisitionsDivestituresTables">
        <link:definition>9955514 - Disclosure - Acquisitions &amp; Divestitures (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://dgoc.com/role/RevenueTables">
        <link:definition>9955515 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ExpensesbyNatureTables" roleURI="http://dgoc.com/role/ExpensesbyNatureTables">
        <link:definition>9955516 - Disclosure - Expenses by Nature (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxationTables" roleURI="http://dgoc.com/role/TaxationTables">
        <link:definition>9955517 - Disclosure - Taxation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsTables" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsTables">
        <link:definition>9955518 - Disclosure - Derivative Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareCapitalTables" roleURI="http://dgoc.com/role/ShareCapitalTables">
        <link:definition>9955519 - Disclosure - Share Capital (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DividendsTables" roleURI="http://dgoc.com/role/DividendsTables">
        <link:definition>9955520 - Disclosure - Dividends (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsTables" roleURI="http://dgoc.com/role/AssetRetirementObligationsTables">
        <link:definition>9955521 - Disclosure - Asset Retirement Obligations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsTables" roleURI="http://dgoc.com/role/BorrowingsTables">
        <link:definition>9955522 - Disclosure - Borrowings (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueFinancialInstrumentsTables" roleURI="http://dgoc.com/role/FairValueFinancialInstrumentsTables">
        <link:definition>9955523 - Disclosure - Fair Value &amp; Financial Instruments (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BasisofPreparationDetails" roleURI="http://dgoc.com/role/BasisofPreparationDetails">
        <link:definition>9955524 - Disclosure - Basis of Preparation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MaterialAccountingPoliciesScheduleofrestrictedcashDetails" roleURI="http://dgoc.com/role/MaterialAccountingPoliciesScheduleofrestrictedcashDetails">
        <link:definition>9955525 - Disclosure - Material Accounting Policies - Schedule of restricted cash (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="MaterialAccountingPoliciesScheduleofrestrictedcashDetails_1" roleURI="http://dgoc.com/role/MaterialAccountingPoliciesScheduleofrestrictedcashDetails_1">
        <link:definition>9955525 - Disclosure - Material Accounting Policies - Schedule of restricted cash (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestitures2025AcquisitionsNarrativeDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestitures2025AcquisitionsNarrativeDetails">
        <link:definition>9955526 - Disclosure - Acquisitions &amp; Divestitures - 2025 Acquisitions - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestituresMaverickNaturalResourcesDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestituresMaverickNaturalResourcesDetails">
        <link:definition>9955527 - Disclosure - Acquisitions &amp; Divestitures - Maverick Natural Resources (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestituresSensitivityAnalysisDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestituresSensitivityAnalysisDetails">
        <link:definition>9955528 - Disclosure - Acquisitions &amp; Divestitures - Sensitivity Analysis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestituresSummitNaturalResourcesDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestituresSummitNaturalResourcesDetails">
        <link:definition>9955529 - Disclosure - Acquisitions &amp; Divestitures - Summit Natural Resources (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestituresOtherAcquisitionsDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestituresOtherAcquisitionsDetails">
        <link:definition>9955530 - Disclosure - Acquisitions &amp; Divestitures - Other Acquisitions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestitures2025DivestituresDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestitures2025DivestituresDetails">
        <link:definition>9955531 - Disclosure - Acquisitions &amp; Divestitures - 2025 Divestitures (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDivestitures2024AcquisitionandDivestituresNarrativeDetails" roleURI="http://dgoc.com/role/AcquisitionsDivestitures2024AcquisitionandDivestituresNarrativeDetails">
        <link:definition>9955532 - Disclosure - Acquisitions &amp; Divestitures - 2024 Acquisition and Divestitures - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDetails" roleURI="http://dgoc.com/role/RevenueDetails">
        <link:definition>9955533 - Disclosure - Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ExpensesbyNatureDetails" roleURI="http://dgoc.com/role/ExpensesbyNatureDetails">
        <link:definition>9955534 - Disclosure - Expenses by Nature (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxationNarrativeDetails" roleURI="http://dgoc.com/role/TaxationNarrativeDetails">
        <link:definition>9955535 - Disclosure - Taxation - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxationScheduleofeffectivetaxratesreconciliationDetails" roleURI="http://dgoc.com/role/TaxationScheduleofeffectivetaxratesreconciliationDetails">
        <link:definition>9955536 - Disclosure - Taxation - Schedule of effective tax rates reconciliation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TaxationScheduleofprovisionforincometaxesDetails" roleURI="http://dgoc.com/role/TaxationScheduleofprovisionforincometaxesDetails">
        <link:definition>9955537 - Disclosure - Taxation - Schedule of provision for income taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsSummaryofnetfairvalueofderivativefinancialinstrumentsDetails" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsSummaryofnetfairvalueofderivativefinancialinstrumentsDetails">
        <link:definition>9955538 - Disclosure - Derivative Financial Instruments - Summary of net fair value of derivative financial instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsSummaryofnetderivativesDetails" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsSummaryofnetderivativesDetails">
        <link:definition>9955539 - Disclosure - Derivative Financial Instruments - Summary of net derivatives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsSummaryofnetderivativesDetails_1" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsSummaryofnetderivativesDetails_1">
        <link:definition>9955539 - Disclosure - Derivative Financial Instruments - Summary of net derivatives (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsScheduleofeffectsofoffsettingDetails" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsScheduleofeffectsofoffsettingDetails">
        <link:definition>9955540 - Disclosure - Derivative Financial Instruments - Schedule of effects of offsetting (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsSummaryofgainlossonderivativefinancialinstrumentsDetails" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsSummaryofgainlossonderivativefinancialinstrumentsDetails">
        <link:definition>9955541 - Disclosure - Derivative Financial Instruments - Summary of gain (loss) on derivative financial instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativeFinancialInstrumentsNarrativeDetails" roleURI="http://dgoc.com/role/DerivativeFinancialInstrumentsNarrativeDetails">
        <link:definition>9955542 - Disclosure - Derivative Financial Instruments - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareCapitalNarrativeDetails" roleURI="http://dgoc.com/role/ShareCapitalNarrativeDetails">
        <link:definition>9955543 - Disclosure - Share Capital - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareCapitalSummaryofsharecapitalnetofcustomarytransactioncostsDetails" roleURI="http://dgoc.com/role/ShareCapitalSummaryofsharecapitalnetofcustomarytransactioncostsDetails">
        <link:definition>9955544 - Disclosure - Share Capital - Summary of share capital, net of customary transaction costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DividendsSummaryofdividendsdeclaredandpaidDetails" roleURI="http://dgoc.com/role/DividendsSummaryofdividendsdeclaredandpaidDetails">
        <link:definition>9955545 - Disclosure - Dividends - Summary of dividends declared and paid (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DividendsNarrativeDetails" roleURI="http://dgoc.com/role/DividendsNarrativeDetails">
        <link:definition>9955546 - Disclosure - Dividends - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsNarrativeDetails" roleURI="http://dgoc.com/role/AssetRetirementObligationsNarrativeDetails">
        <link:definition>9955547 - Disclosure - Asset Retirement Obligations- Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsScheduleofprovisionforassetretirementobligationsDetails" roleURI="http://dgoc.com/role/AssetRetirementObligationsScheduleofprovisionforassetretirementobligationsDetails">
        <link:definition>9955548 - Disclosure - Asset Retirement Obligations - Schedule of provision for asset retirement obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AssetRetirementObligationsScheduleofchangestoassumptionsfortheestimationofthegroupsassetretirementobligationsDetails" roleURI="http://dgoc.com/role/AssetRetirementObligationsScheduleofchangestoassumptionsfortheestimationofthegroupsassetretirementobligationsDetails">
        <link:definition>9955549 - Disclosure - Asset Retirement Obligations - Schedule of changes to assumptions for the estimation of the group&#8217;s asset retirement obligations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsScheduleofborrowingsDetails" roleURI="http://dgoc.com/role/BorrowingsScheduleofborrowingsDetails">
        <link:definition>9955550 - Disclosure - Borrowings - Schedule of borrowings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsCreditFacilityDetails" roleURI="http://dgoc.com/role/BorrowingsCreditFacilityDetails">
        <link:definition>9955551 - Disclosure - Borrowings - Credit Facility (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsTermLoansIandIIDetails" roleURI="http://dgoc.com/role/BorrowingsTermLoansIandIIDetails">
        <link:definition>9955552 - Disclosure - Borrowings - Term Loans I and II (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSINotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSINotesDetails">
        <link:definition>9955553 - Disclosure - Borrowings - ABS I Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSIINotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSIINotesDetails">
        <link:definition>9955554 - Disclosure - Borrowings - ABS II Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSIIINotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSIIINotesDetails">
        <link:definition>9955555 - Disclosure - Borrowings - ABS III Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSIVNotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSIVNotesDetails">
        <link:definition>9955556 - Disclosure - Borrowings - ABS IV Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSVNotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSVNotesDetails">
        <link:definition>9955557 - Disclosure - Borrowings - ABS V Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSVINotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSVINotesDetails">
        <link:definition>9955558 - Disclosure - Borrowings - ABS VI Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSVIINotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSVIINotesDetails">
        <link:definition>9955559 - Disclosure - Borrowings - ABS VII Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSVIIINotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSVIIINotesDetails">
        <link:definition>9955560 - Disclosure - Borrowings - ABS VIII Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSIXNotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSIXNotesDetails">
        <link:definition>9955561 - Disclosure - Borrowings - ABS IX Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSXNotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSXNotesDetails">
        <link:definition>9955562 - Disclosure - Borrowings - ABS X Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsABSMaverickNotesDetails" roleURI="http://dgoc.com/role/BorrowingsABSMaverickNotesDetails">
        <link:definition>9955563 - Disclosure - Borrowings - ABS Maverick Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsNordicBondsDetails" roleURI="http://dgoc.com/role/BorrowingsNordicBondsDetails">
        <link:definition>9955564 - Disclosure - Borrowings - Nordic Bonds (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsOaktreeSellersNoteDetails" roleURI="http://dgoc.com/role/BorrowingsOaktreeSellersNoteDetails">
        <link:definition>9955565 - Disclosure - Borrowings - Oaktree Seller's Note (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsEarlyRetirementofdebtDetails" roleURI="http://dgoc.com/role/BorrowingsEarlyRetirementofdebtDetails">
        <link:definition>9955566 - Disclosure - Borrowings - Early Retirement of debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsSustainabilitylinkedborrowingsDetails" roleURI="http://dgoc.com/role/BorrowingsSustainabilitylinkedborrowingsDetails">
        <link:definition>9955567 - Disclosure - Borrowings - Sustainability-linked borrowings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsScheduleofmaturityofborrowingsDetails" roleURI="http://dgoc.com/role/BorrowingsScheduleofmaturityofborrowingsDetails">
        <link:definition>9955568 - Disclosure - Borrowings - Schedule of maturity of borrowings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsScheduleoffinancecostsDetails" roleURI="http://dgoc.com/role/BorrowingsScheduleoffinancecostsDetails">
        <link:definition>9955569 - Disclosure - Borrowings - Schedule of finance costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsInterestincurredDetails" roleURI="http://dgoc.com/role/BorrowingsInterestincurredDetails">
        <link:definition>9955570 - Disclosure - Borrowings - Interest incurred (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsFairvalueDetails" roleURI="http://dgoc.com/role/BorrowingsFairvalueDetails">
        <link:definition>9955571 - Disclosure - Borrowings - Fair value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsExcesscashflowpaymentsDetails" roleURI="http://dgoc.com/role/BorrowingsExcesscashflowpaymentsDetails">
        <link:definition>9955572 - Disclosure - Borrowings - Excess cash flow payments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BorrowingsScheduleofreconciliationofborrowingsDetails" roleURI="http://dgoc.com/role/BorrowingsScheduleofreconciliationofborrowingsDetails">
        <link:definition>9955573 - Disclosure - Borrowings - Schedule of reconciliation of borrowings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueFinancialInstrumentsFinancialinstrumentsDetails" roleURI="http://dgoc.com/role/FairValueFinancialInstrumentsFinancialinstrumentsDetails">
        <link:definition>9955574 - Disclosure - Fair Value &amp; Financial Instruments - Financial instruments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="dec_EquityPlacementsMember" abstract="true" name="EquityPlacementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_AcquisitionConsiderationMember" abstract="true" name="AcquisitionConsiderationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_EquityCompensationMember" abstract="true" name="EquityCompensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_EquityCompensationThroughEmployeeBenefitTrustMember" abstract="true" name="EquityCompensationThroughEmployeeBenefitTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ShareBuybackProgramMember" abstract="true" name="ShareBuybackProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_PluggingCostsOfAssetRetirementObligations" abstract="false" name="PluggingCostsOfAssetRetirementObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseDecreaseInWorkingCapitalAbstract" abstract="true" name="IncreaseDecreaseInWorkingCapitalAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DeferredConsiderationPaymentsClassifiedAsInvestingActivities" abstract="false" name="DeferredConsiderationPaymentsClassifiedAsInvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentForPenaltyOnEarlyRetirementOfDebt" abstract="false" name="PaymentForPenaltyOnEarlyRetirementOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseInRestrictedCash" abstract="false" name="IncreaseInRestrictedCash" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DecreaseInRestrictedCash" abstract="false" name="DecreaseInRestrictedCash" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_HedgeModificationsAssociatedWithABSNotes" abstract="false" name="HedgeModificationsAssociatedWithABSNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_ProceedsFromLeaseModificationsClassifiedAsFinancingActivities" abstract="false" name="ProceedsFromLeaseModificationsClassifiedAsFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" abstract="false" name="PaymentsToAcquireOrRedeemEntitysSharesShareBuybackProgramFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_ProceedsFromPaymentsForDerivativeInstrumentsOperatingActivities" abstract="false" name="ProceedsFromPaymentsForDerivativeInstrumentsOperatingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DisclosureOfGeneralInformationAboutFinancialStatementsAbstract" abstract="true" name="DisclosureOfGeneralInformationAboutFinancialStatementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DisclosureOfBasisOfPreparationOfFinancialStatementsAbstract" abstract="true" name="DisclosureOfBasisOfPreparationOfFinancialStatementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_SignificantAccountingPoliciesAbstract" abstract="true" name="SignificantAccountingPoliciesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_AcquisitionsAndDivestituresAbstract" abstract="true" name="AcquisitionsAndDivestituresAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DisclosureOfBusinessCombinationsAssetAcquisitionsAndDivestituresTableTextBlock" abstract="false" name="DisclosureOfBusinessCombinationsAssetAcquisitionsAndDivestituresTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_IncomeTaxAbstract" abstract="true" name="IncomeTaxAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_ShareCapitalReservesAndOtherEquityInterestAbstract" abstract="true" name="ShareCapitalReservesAndOtherEquityInterestAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_Dividends1Abstract" abstract="true" name="Dividends1Abstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DisclosureOfDecommissioningRestorationAndRehabilitationProvisionsExplanatoryTextBlock" abstract="false" name="DisclosureOfDecommissioningRestorationAndRehabilitationProvisionsExplanatoryTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_FairValueAndFinancialInstrumentsAbstract" abstract="true" name="FairValueAndFinancialInstrumentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_RelatedPartyAbstract" abstract="true" name="RelatedPartyAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_EventsAfterReportingPeriodAbstract" abstract="true" name="EventsAfterReportingPeriodAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DescriptionOfAccountingPolicyForGoingConcernPolicyTextBlock" abstract="false" name="DescriptionOfAccountingPolicyForGoingConcernPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DescriptionOfAccountingPolicyForNewAccountingStandardsPolicyTextBlock" abstract="false" name="DescriptionOfAccountingPolicyForNewAccountingStandardsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DescriptionOfAccountingPolicyForBusinessCombinationsAndAssetAcquisitionsPolicyTextBlock" abstract="false" name="DescriptionOfAccountingPolicyForBusinessCombinationsAndAssetAcquisitionsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DescriptionOfAccountingPolicyForAssetRetirementObligationsPolicyTextBlock" abstract="false" name="DescriptionOfAccountingPolicyForAssetRetirementObligationsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DisclosureOfDetailedInformationAboutRestrictedCashTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationAboutRestrictedCashTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DisclosureOfDetailedInformationAboutAssetAcquisitionsTableTextBlock" abstract="false" name="DisclosureOfDetailedInformationAboutAssetAcquisitionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_ScheduleOfDisaggregationOfRevenueTableTextBlock" abstract="false" name="ScheduleOfDisaggregationOfRevenueTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DisclosureOfExpensesByNatureTableTextBlock" abstract="false" name="DisclosureOfExpensesByNatureTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock" abstract="false" name="DisclosureOfReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAndAverageEffectiveTaxRateTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_DisclosureOfMajorComponentsOfTaxExpenseIncomeTextBlock" abstract="false" name="DisclosureOfMajorComponentsOfTaxExpenseIncomeTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_ScheduleOfDerivativeInstrumentsTableTextBlock" abstract="false" name="ScheduleOfDerivativeInstrumentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_ScheduleOfFinancialStatementLocationOfDerivativeInstrumentsTableTextBlock" abstract="false" name="ScheduleOfFinancialStatementLocationOfDerivativeInstrumentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_SummaryOfDividendsDeclaredAndPaidTableTextBlock" abstract="false" name="SummaryOfDividendsDeclaredAndPaidTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_ScheduleOfDecommissioningRestorationAndRehabilitationProvisionsTableTextBlock" abstract="false" name="ScheduleOfDecommissioningRestorationAndRehabilitationProvisionsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_ScheduleOfFinanceCostsTableTextBlock" abstract="false" name="ScheduleOfFinanceCostsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="dec_ChesapeakeGraniteWashTrustMember" abstract="true" name="ChesapeakeGraniteWashTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_SoonerStateJointABSHoldingsLLCMember" abstract="true" name="SoonerStateJointABSHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DPLionEquityHoldcoLLCMember" abstract="true" name="DPLionEquityHoldcoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_GiantLandLLCMember" abstract="true" name="GiantLandLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_LinkLandLLCMember" abstract="true" name="LinkLandLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OldFaithfulLandLLCMember" abstract="true" name="OldFaithfulLandLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_RiversideLandLLCMember" abstract="true" name="RiversideLandLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_SplendidLandLLCMember" abstract="true" name="SplendidLandLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DiversifiedProductionLLCMember" abstract="true" name="DiversifiedProductionLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OCMDenaliHoldingsLLCMember" abstract="true" name="OCMDenaliHoldingsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NumberOfReportableSegments" abstract="false" name="NumberOfReportableSegments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_CashRestrictedByAssetBackedSecuritizations" abstract="false" name="CashRestrictedByAssetBackedSecuritizations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OtherRestrictedCash" abstract="false" name="OtherRestrictedCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetsAcquisitionAxis" abstract="true" name="AssetsAcquisitionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_AssetsAcquisitionDomain" abstract="true" name="AssetsAcquisitionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_SummitNaturalResourcesMember" abstract="true" name="SummitNaturalResourcesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_MaverickNaturalResourcesLLCMember" abstract="true" name="MaverickNaturalResourcesLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_MaverickCreditFacilityMember" abstract="true" name="MaverickCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesMember" abstract="true" name="ABSMaverickNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NaturalGasAndOilPropertiesMember" abstract="true" name="NaturalGasAndOilPropertiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_AssetAcquisitionConsiderationPaid" abstract="false" name="AssetAcquisitionConsiderationPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AcquisitionRelatedCostsForAssetAcquisition" abstract="false" name="AcquisitionRelatedCostsForAssetAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetsAcquisitionCashConsideration" abstract="false" name="AssetsAcquisitionCashConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionSharesIssued" abstract="false" name="AssetAcquisitionSharesIssued" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dec_DecommissioningRestorationAndRehabilitationCostsAssetRecognizedAsOfAcquisitionDate" abstract="false" name="DecommissioningRestorationAndRehabilitationCostsAssetRecognizedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_RestrictedCashRecognizedAsOfAcquisitionDate" abstract="false" name="RestrictedCashRecognizedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OtherNonCurrentAssetsRecognizedAsOfAcquisitionDate" abstract="false" name="OtherNonCurrentAssetsRecognizedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_ProvisionForDecommissioningRestorationAndRehabilitationCostsRecognizedAsOfAcquisitionDate" abstract="false" name="ProvisionForDecommissioningRestorationAndRehabilitationCostsRecognizedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OtherCurrentLiabilitiesRecognizedAsOfAcquisitionDate" abstract="false" name="OtherCurrentLiabilitiesRecognizedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IssuedSharePrice" abstract="false" name="IssuedSharePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="dec_ProductionMeasurementInputMember" abstract="true" name="ProductionMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OperatingExpenseMeasurementInputMember" abstract="true" name="OperatingExpenseMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ForwardCurveMeasurementInputMember" abstract="true" name="ForwardCurveMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ConsiderationPaidAbstract" abstract="true" name="ConsiderationPaidAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_NetAssetsAcquiredAbstract" abstract="true" name="NetAssetsAcquiredAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_AssetAcquisitionNaturalGasAndOilProperties" abstract="false" name="AssetAcquisitionNaturalGasAndOilProperties" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionAssetRetirementObligations" abstract="false" name="AssetAcquisitionAssetRetirementObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionPropertyPlantAndEquipment" abstract="false" name="AssetAcquisitionPropertyPlantAndEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionTradeReceivablesNet" abstract="false" name="AssetAcquisitionTradeReceivablesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionRetirementObligationsLiabilityPortion" abstract="false" name="AssetAcquisitionRetirementObligationsLiabilityPortion" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionOtherLiabilitiesCurrent" abstract="false" name="AssetAcquisitionOtherLiabilitiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionAssetsAcquiredLiabilitiesAssumedNet" abstract="false" name="AssetAcquisitionAssetsAcquiredLiabilitiesAssumedNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OtherAcquisitionsMember" abstract="true" name="OtherAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DivestituresNameAxis" abstract="true" name="DivestituresNameAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_DivestituresNameDomain" abstract="true" name="DivestituresNameDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CertainOtherNonCoreUndevelopedAcreageMember" abstract="true" name="CertainOtherNonCoreUndevelopedAcreageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_EastTexasIIMember" abstract="true" name="EastTexasIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CrescentPassEnergyMember" abstract="true" name="CrescentPassEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OaktreeCapitalManagementMember" abstract="true" name="OaktreeCapitalManagementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_AssetAcquisitionBorrowingsRecognisedAsOfAcquisitionDate" abstract="false" name="AssetAcquisitionBorrowingsRecognisedAsOfAcquisitionDate" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionDeferredConsiderationAmortizingDebt" abstract="false" name="AssetAcquisitionDeferredConsiderationAmortizingDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_HedgedRevenueOfAssetAcquisitionSinceAcquisitionDate" abstract="false" name="HedgedRevenueOfAssetAcquisitionSinceAcquisitionDate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OperatingExpenseOfAssetAcquisitionSinceAcquisitionDate" abstract="false" name="OperatingExpenseOfAssetAcquisitionSinceAcquisitionDate" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_Commodity1Member" abstract="true" name="Commodity1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NaturalGasLiquidsNGLMember" abstract="true" name="NaturalGasLiquidsNGLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_MidstreamMember" abstract="true" name="MidstreamMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ThirdPartyPluggingRevenueMember" abstract="true" name="ThirdPartyPluggingRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherRevenueMember" abstract="true" name="OtherRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_LOEMember" abstract="true" name="LOEMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ProductionTaxesMember" abstract="true" name="ProductionTaxesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_MidstreamOperatingExpenseMember" abstract="true" name="MidstreamOperatingExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TransportationExpenseMember" abstract="true" name="TransportationExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DepreciationAndAmortizationExpenseMember" abstract="true" name="DepreciationAndAmortizationExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DepletionExpenseMember" abstract="true" name="DepletionExpenseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_EmployeesAdministrativeCostsAndProfessionalServicesMember" abstract="true" name="EmployeesAdministrativeCostsAndProfessionalServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CostsAssociatedWithAcquisitionsMember" abstract="true" name="CostsAssociatedWithAcquisitionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherAdjustingCostsMember" abstract="true" name="OtherAdjustingCostsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NonCashEquityCompensationMember" abstract="true" name="NonCashEquityCompensationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_AggregateRemunerationIncludingDirectorsAbstract" abstract="true" name="AggregateRemunerationIncludingDirectorsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_IncreaseDecreaseInTaxExpenseBenefit" abstract="false" name="IncreaseDecreaseInTaxExpenseBenefit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_TaxRateEffectOfStateTaxRates" abstract="false" name="TaxRateEffectOfStateTaxRates" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_TaxRateEffectOfTaxCredits" abstract="false" name="TaxRateEffectOfTaxCredits" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_CurrentIncomeTaxExpenseAbstract" abstract="true" name="CurrentIncomeTaxExpenseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_CurrentFederalTaxExpenseIncome" abstract="false" name="CurrentFederalTaxExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentStateAndLocalTaxExpenseIncome" abstract="false" name="CurrentStateAndLocalTaxExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentForeignTaxExpenseIncome" abstract="false" name="CurrentForeignTaxExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DeferredIncomeTaxExpenseIncomeAbstract" abstract="true" name="DeferredIncomeTaxExpenseIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DeferredFederalIncomeTaxExpenseIncome" abstract="false" name="DeferredFederalIncomeTaxExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DeferredStateAndLocalIncomeTaxExpenseIncome" abstract="false" name="DeferredStateAndLocalIncomeTaxExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DeferredForeignIncomeTaxExpenseIncome" abstract="false" name="DeferredForeignIncomeTaxExpenseIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodAxis" abstract="true" name="DerivativeInstrumentPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodDomain" abstract="true" name="DerivativeInstrumentPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodRemainderOfFiscalYearMember" abstract="true" name="DerivativeInstrumentPeriodRemainderOfFiscalYearMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearOneMember" abstract="true" name="DerivativeInstrumentPeriodYearOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearTwoMember" abstract="true" name="DerivativeInstrumentPeriodYearTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearThreeMember" abstract="true" name="DerivativeInstrumentPeriodYearThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearFourMember" abstract="true" name="DerivativeInstrumentPeriodYearFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearFiveMember" abstract="true" name="DerivativeInstrumentPeriodYearFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearSixMember" abstract="true" name="DerivativeInstrumentPeriodYearSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearSevenMember" abstract="true" name="DerivativeInstrumentPeriodYearSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeInstrumentPeriodYearEightMember" abstract="true" name="DerivativeInstrumentPeriodYearEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NaturalGasContractMember" abstract="true" name="NaturalGasContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NGLsContractsMember" abstract="true" name="NGLsContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OilContractsMember" abstract="true" name="OilContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_InterestContractsMember" abstract="true" name="InterestContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoWayCollarContractMember" abstract="true" name="TwoWayCollarContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoWayCollarContractPurchasedPutsMember" abstract="true" name="TwoWayCollarContractPurchasedPutsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoWayCollarContractSoldCallsMember" abstract="true" name="TwoWayCollarContractSoldCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoWayCollarContractPurchasedCallsMember" abstract="true" name="TwoWayCollarContractPurchasedCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ThreeWayCollarContractMember" abstract="true" name="ThreeWayCollarContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ThreeWayCollarContractSoldPutMember" abstract="true" name="ThreeWayCollarContractSoldPutMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ThreeWayCollarContractPurchasedPutsMember" abstract="true" name="ThreeWayCollarContractPurchasedPutsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ThreeWayCollarContractSoldCallsMember" abstract="true" name="ThreeWayCollarContractSoldCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_StandAloneCallContractMember" abstract="true" name="StandAloneCallContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_StandAloneCallContractSoldCallsMember" abstract="true" name="StandAloneCallContractSoldCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_PurchasedPutContractMember" abstract="true" name="PurchasedPutContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_SoldPutContractMember" abstract="true" name="SoldPutContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BasisSwapContractMember" abstract="true" name="BasisSwapContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_SoldCallContractMember" abstract="true" name="SoldCallContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DerivativeNotionalAmountVolume" abstract="false" name="DerivativeNotionalAmountVolume" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_DerivativeWeightedAveragePrice" abstract="false" name="DerivativeWeightedAveragePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_DerivativeFinancialAssetsLiabilities" abstract="false" name="DerivativeFinancialAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeFixedInterestRate1" abstract="false" name="DerivativeFixedInterestRate1" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_WeightedAveragePriceBtuConversionFactor" abstract="false" name="WeightedAveragePriceBtuConversionFactor" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_DerivativeAssetAbstract" abstract="true" name="DerivativeAssetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DerivativeLiabilityAbstract" abstract="true" name="DerivativeLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_NonCurrentDerivativeAssetsLiabilities" abstract="false" name="NonCurrentDerivativeAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentDerivativeAssetsLiabilities" abstract="false" name="CurrentDerivativeAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetsLiabilities" abstract="false" name="DerivativeAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetOrLiabilitySubjectToMasterNettingArrangementBeforeOffsetAbstract" abstract="true" name="DerivativeAssetOrLiabilitySubjectToMasterNettingArrangementBeforeOffsetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_NoncurrentDerivativeAssetBeforeOffset" abstract="false" name="NoncurrentDerivativeAssetBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentDerivativeAssetBeforeOffset" abstract="false" name="CurrentDerivativeAssetBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetBeforeOffset" abstract="false" name="DerivativeAssetBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_NoncurrentDerivativeLiabilityBeforeOffset" abstract="false" name="NoncurrentDerivativeLiabilityBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentDerivativeLiabilityBeforeOffset" abstract="false" name="CurrentDerivativeLiabilityBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeLiabilityBeforeOffset" abstract="false" name="DerivativeLiabilityBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetLiabilityBeforeOffset" abstract="false" name="DerivativeAssetLiabilityBeforeOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetSubjectToMasterNettingArrangementLiabilityOffsetAbstract" abstract="true" name="DerivativeAssetSubjectToMasterNettingArrangementLiabilityOffsetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_NoncurrentDerivativeAssetLiabilityOffset" abstract="false" name="NoncurrentDerivativeAssetLiabilityOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentDerivativeAssetLiabilityOffset" abstract="false" name="CurrentDerivativeAssetLiabilityOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetLiabilityOffset" abstract="false" name="DerivativeAssetLiabilityOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_NoncurrentDerivativeLiabilityAssetOffset" abstract="false" name="NoncurrentDerivativeLiabilityAssetOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CurrentDerivativeLiabilityAssetOffset" abstract="false" name="CurrentDerivativeLiabilityAssetOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeLiabilityAssetOffset" abstract="false" name="DerivativeLiabilityAssetOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetLiabilityNetOffset" abstract="false" name="DerivativeAssetLiabilityNetOffset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetLiabilityAbstract" abstract="true" name="DerivativeAssetLiabilityAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_CommodityContract1Member" abstract="true" name="CommodityContract1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_GainsLossesOnSettledDerivatives" abstract="false" name="GainsLossesOnSettledDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_GainsLossesOnUnsettledDerivatives" abstract="false" name="GainsLossesOnUnsettledDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PutContractMember" abstract="true" name="PutContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BorrowingsCovenantsAxis" abstract="true" name="BorrowingsCovenantsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_BorrowingsCovenantsDomain" abstract="true" name="BorrowingsCovenantsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSXFinancingAgreementMember" abstract="true" name="ABSXFinancingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSIAndTermLoanIMember" abstract="true" name="ABSIAndTermLoanIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ProceedsFromDerivativeInstrumentsOperatingActivities" abstract="false" name="ProceedsFromDerivativeInstrumentsOperatingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsForDerivativeInstrumentsFinancingActivities" abstract="false" name="PaymentsForDerivativeInstrumentsFinancingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_EmployeeBenefitTrustMember" abstract="true" name="EmployeeBenefitTrustMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoThousandSeventeenEquityIncentivePlanAndEmployeeSharePurchasePlanMember" abstract="true" name="TwoThousandSeventeenEquityIncentivePlanAndEmployeeSharePurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NumberOfClassesOfStock" abstract="false" name="NumberOfClassesOfStock" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_NumberOfVotesPerShare" abstract="false" name="NumberOfVotesPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_GrossProceedsFromIssuingShares" abstract="false" name="GrossProceedsFromIssuingShares" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetsAcquisitionValueOfIssuedSharesConsideration" abstract="false" name="AssetsAcquisitionValueOfIssuedSharesConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_NumberOfNewSharesIssuedInThePeriod" abstract="false" name="NumberOfNewSharesIssuedInThePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dec_NumberOfTreasurySharesPurchasedDuringThePeriod" abstract="false" name="NumberOfTreasurySharesPurchasedDuringThePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dec_PurchasePricePerShare" abstract="false" name="PurchasePricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="dec_PaymentForRepurchasingShares" abstract="false" name="PaymentForRepurchasingShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_NumberOfTreasurySharesSoldOrIssuedDuringThePeriod" abstract="false" name="NumberOfTreasurySharesSoldOrIssuedDuringThePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dec_NumberOfSharesOutstandingGrossOfShareRepurchases" abstract="false" name="NumberOfSharesOutstandingGrossOfShareRepurchases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="dec_DividendsTable" abstract="true" name="DividendsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_DividendsLineItems" abstract="true" name="DividendsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_AdditionsProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="AdditionsProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseThroughAccretionProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="IncreaseThroughAccretionProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="PaymentsProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseDecreaseThroughRevisionToEstimateProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="IncreaseDecreaseThroughRevisionToEstimateProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseDecreaseThroughRevisionToEstimateForCostRevisionsProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="IncreaseDecreaseThroughRevisionToEstimateForCostRevisionsProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseDecreaseThroughRevisionToEstimateForTimingRevisionsProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="IncreaseDecreaseThroughRevisionToEstimateForTimingRevisionsProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_IncreaseDecreaseThroughRevisionToEstimateForChangeInDiscountRateProvisionForDecommissioningRestorationAndRehabilitationCosts" abstract="false" name="IncreaseDecreaseThroughRevisionToEstimateForChangeInDiscountRateProvisionForDecommissioningRestorationAndRehabilitationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_TimingMeasurementInputMember" abstract="true" name="TimingMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CostMeasurementInputMember" abstract="true" name="CostMeasurementInputMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CreditFacilityMember" abstract="true" name="CreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TermLoanIMember" abstract="true" name="TermLoanIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TermLoanIIMember" abstract="true" name="TermLoanIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSINoteMember" abstract="true" name="ABSINoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSIINoteMember" abstract="true" name="ABSIINoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSIVNoteMember" abstract="true" name="ABSIVNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSVINoteMember" abstract="true" name="ABSVINoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSVIIINotesMember" abstract="true" name="ABSVIIINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSIXNotesMember" abstract="true" name="ABSIXNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSXNotesMember" abstract="true" name="ABSXNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NordicBondsMember" abstract="true" name="NordicBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_MiscellaneousBorrowingsMember" abstract="true" name="MiscellaneousBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_NotesTermLoanAndOtherNotesPayableMember" abstract="true" name="NotesTermLoanAndOtherNotesPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DeferredFinancingCostsNettingMember" abstract="true" name="DeferredFinancingCostsNettingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OriginalIssuePremiumsMember" abstract="true" name="OriginalIssuePremiumsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OriginalIssueDiscountsNettingMember" abstract="true" name="OriginalIssueDiscountsNettingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_AssetsAcquisitionNotesPayable" abstract="false" name="AssetsAcquisitionNotesPayable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsNumberOfPropertiesCollateralizingBorrowing" abstract="false" name="BorrowingsNumberOfPropertiesCollateralizingBorrowing" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_CreditFacilityLettersOfCreditMember" abstract="true" name="CreditFacilityLettersOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_SecuredOvernightFinancingRateSOFRMember" abstract="true" name="SecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantOneMember" abstract="true" name="CovenantOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantTwoMember" abstract="true" name="CovenantTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantThreeMember" abstract="true" name="CovenantThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BorrowingsCovenantLeverageRatio" abstract="false" name="BorrowingsCovenantLeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_BorrowingsCovenantBorrowingBaseAvailabilityPercent" abstract="false" name="BorrowingsCovenantBorrowingBaseAvailabilityPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantTotalDebtToEBITDAXRatioMaximum" abstract="false" name="BorrowingsCovenantTotalDebtToEBITDAXRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_BorrowingsCovenantCurrentAssetsToCurrentLiabilitiesRatioMinimum" abstract="false" name="BorrowingsCovenantCurrentAssetsToCurrentLiabilitiesRatioMinimum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_PrincipalInstallmentDueDateAxis" abstract="true" name="PrincipalInstallmentDueDateAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_PrincipalInstallmentDueDateDomain" abstract="true" name="PrincipalInstallmentDueDateDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoThousandTwentyFiveFebruaryMember" abstract="true" name="TwoThousandTwentyFiveFebruaryMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TwoThousandTwentyFiveJulyMember" abstract="true" name="TwoThousandTwentyFiveJulyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BorrowingsDiscountPercentage" abstract="false" name="BorrowingsDiscountPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_BorrowingsOnTermLoan" abstract="false" name="BorrowingsOnTermLoan" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsOnRevolvingLoan" abstract="false" name="BorrowingsOnRevolvingLoan" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_GainLossEarlyRetirementOfDebt" abstract="false" name="GainLossEarlyRetirementOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_FixedAmortizationOfMonthlyPrincipalLoanPayments" abstract="false" name="FixedAmortizationOfMonthlyPrincipalLoanPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_UpstreamProducingAppalachianAssetsMember" abstract="true" name="UpstreamProducingAppalachianAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantFourMember" abstract="true" name="CovenantFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_PercentageOfAssetsHedged" abstract="false" name="PercentageOfAssetsHedged" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantIfCashFlowInExcessOfRequiredPaymentsPercentageOfExcessCashFlowRequiredToBePaid" abstract="false" name="BorrowingsCovenantIfCashFlowInExcessOfRequiredPaymentsPercentageOfExcessCashFlowRequiredToBePaid" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantDebtServiceCoverageRatio" abstract="false" name="BorrowingsCovenantDebtServiceCoverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_BorrowingsCovenantProductionTrackingRate" abstract="false" name="BorrowingsCovenantProductionTrackingRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantLoanToValueRatio" abstract="false" name="BorrowingsCovenantLoanToValueRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_CovenantFiveMember" abstract="true" name="CovenantFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantSixMember" abstract="true" name="CovenantSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantSevenMember" abstract="true" name="CovenantSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CovenantEightMember" abstract="true" name="CovenantEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BorrowingsCovenantExcessCashFlowPaymentToBeMadeIfPerformanceMetricsAreNotMet" abstract="false" name="BorrowingsCovenantExcessCashFlowPaymentToBeMadeIfPerformanceMetricsAreNotMet" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantDerivativeInstrumentPeriod" abstract="false" name="BorrowingsCovenantDerivativeInstrumentPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_BorrowingsCovenantProductionVolume" abstract="false" name="BorrowingsCovenantProductionVolume" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_ABSIIINoteMember" abstract="true" name="ABSIIINoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSVNoteMember" abstract="true" name="ABSVNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_GroupAndOaktreeMember" abstract="true" name="GroupAndOaktreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DiversifiedABSVILLCMember" abstract="true" name="DiversifiedABSVILLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSVIIClassANoteMember" abstract="true" name="ABSVIIClassANoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSVIClassBNoteMember" abstract="true" name="ABSVIClassBNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DPLionHoldCoLLCMember" abstract="true" name="DPLionHoldCoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_PercentageOfEquityOwnershipDivested" abstract="false" name="PercentageOfEquityOwnershipDivested" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="dec_ABSVIIINotesClassA1Member" abstract="true" name="ABSVIIINotesClassA1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSVIIINotesClassA2Member" abstract="true" name="ABSVIIINotesClassA2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSWarehouseFacilityMember" abstract="true" name="ABSWarehouseFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSIXClassANoteMember" abstract="true" name="ABSIXClassANoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSIXClassBNoteMember" abstract="true" name="ABSIXClassBNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ProceedsFromNonCurrentBorrowingsGross" abstract="false" name="ProceedsFromNonCurrentBorrowingsGross" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingFacilitiesRestrictedCashInterestReserve" abstract="false" name="BorrowingFacilitiesRestrictedCashInterestReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_ABSXNotesClassA1Member" abstract="true" name="ABSXNotesClassA1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSXNotesClassA2Member" abstract="true" name="ABSXNotesClassA2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSXNotesClassBMember" abstract="true" name="ABSXNotesClassBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesClassA1Member" abstract="true" name="ABSMaverickNotesClassA1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesClassA2Member" abstract="true" name="ABSMaverickNotesClassA2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesClassBMember" abstract="true" name="ABSMaverickNotesClassBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSMaverickClassANotesMember" abstract="true" name="ABSMaverickClassANotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BorrowingsIssuancePremiumPercentage" abstract="false" name="BorrowingsIssuancePremiumPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantIfCertainPerformanceMetricsAchievedPercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" abstract="false" name="BorrowingsCovenantIfCertainPerformanceMetricsAchievedPercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantIfNoDiversionOrRapidAmortizationEventIsContinuingPercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" abstract="false" name="BorrowingsCovenantIfNoDiversionOrRapidAmortizationEventIsContinuingPercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantIfADiversionOrRapidAmortizationEventIsContinuingPercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" abstract="false" name="BorrowingsCovenantIfADiversionOrRapidAmortizationEventIsContinuingPercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantAnyPaymentDateOnOrAfterExcessAllocationStartingDatePercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" abstract="false" name="BorrowingsCovenantAnyPaymentDateOnOrAfterExcessAllocationStartingDatePercentageOfExcessCashFlowsThatMustBePaidTowardsAdditionalPrincipal" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_BorrowingsCovenantPeriod" abstract="false" name="BorrowingsCovenantPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_BorrowingsCovenantMinimumAssetCoverageRatio" abstract="false" name="BorrowingsCovenantMinimumAssetCoverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_BorrowingsCovenantMinimumBookEquity" abstract="false" name="BorrowingsCovenantMinimumBookEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsCovenantMinimumLiquidityRequirement" abstract="false" name="BorrowingsCovenantMinimumLiquidityRequirement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_OaktreeSellersNoteMember" abstract="true" name="OaktreeSellersNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_BorrowingsNumberOfInstallmentPayments" abstract="false" name="BorrowingsNumberOfInstallmentPayments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_ABSNotesAndTermLoanIMember" abstract="true" name="ABSNotesAndTermLoanIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_ABSNotesIIIAndVMember" abstract="true" name="ABSNotesIIIAndVMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_WriteOffOfFinanceCosts" abstract="false" name="WriteOffOfFinanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsNumberOfSustainabilityLinkedPerformanceTargets" abstract="false" name="BorrowingsNumberOfSustainabilityLinkedPerformanceTargets" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_BorrowingsSustainabilityLinkedPerformanceTargetsTRIRPerformancePeriodForAverageCalculation" abstract="false" name="BorrowingsSustainabilityLinkedPerformanceTargetsTRIRPerformancePeriodForAverageCalculation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_BorrowingsSustainabilityLinkedPerformanceTargetsTRIRPerformanceMultiplier" abstract="false" name="BorrowingsSustainabilityLinkedPerformanceTargetsTRIRPerformanceMultiplier" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_BorrowingsIncreaseDecreaseToInterestRateBasisForFailureToAchieveSustainabilityLinkedPerformanceTargets" abstract="false" name="BorrowingsIncreaseDecreaseToInterestRateBasisForFailureToAchieveSustainabilityLinkedPerformanceTargets" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_BorrowingsFrameworkForSustainabilityLinkedBondsNumberOfKeyComponents" abstract="false" name="BorrowingsFrameworkForSustainabilityLinkedBondsNumberOfKeyComponents" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_BorrowingsSustainabilityLinkedPerformanceTargetReductionInScope1AndScope2GHGEmissions" abstract="false" name="BorrowingsSustainabilityLinkedPerformanceTargetReductionInScope1AndScope2GHGEmissions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_BorrowingsSustainabilityLinkedPerformanceTargetReductionInScope1MethaneEmissions" abstract="false" name="BorrowingsSustainabilityLinkedPerformanceTargetReductionInScope1MethaneEmissions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="dec_AmortizationOfDiscountAndDeferredFinanceCosts" abstract="false" name="AmortizationOfDiscountAndDeferredFinanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OtherMiscellaneousBorrowingsMember" abstract="true" name="OtherMiscellaneousBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OaktreeSellersNotesMember" abstract="true" name="OaktreeSellersNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherNotesPayableMember" abstract="true" name="OtherNotesPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_InterestIncurredOnBorrowings" abstract="false" name="InterestIncurredOnBorrowings" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsFairValue" abstract="false" name="BorrowingsFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsExcessCashFlowPayments" abstract="false" name="BorrowingsExcessCashFlowPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsNetOfDiscountsAndDeferredFinanceCosts" abstract="false" name="BorrowingsNetOfDiscountsAndDeferredFinanceCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsIncreaseDueToAcquisition" abstract="false" name="BorrowingsIncreaseDueToAcquisition" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsForSecureFinancingCosts" abstract="false" name="PaymentsForSecureFinancingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsCashPaidForInterest" abstract="false" name="BorrowingsCashPaidForInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BorrowingsFinanceCostsAndOther" abstract="false" name="BorrowingsFinanceCostsAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable" abstract="true" name="DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_FinancialInstrumentsMember" abstract="true" name="FinancialInstrumentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_CashAndCashEquivalents1Member" abstract="true" name="CashAndCashEquivalents1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_TradeReceivablesAndAccruedIncomeMember" abstract="true" name="TradeReceivablesAndAccruedIncomeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherAssetsNoncurrentMember" abstract="true" name="OtherAssetsNoncurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherLiabilitiesNoncurrentMember" abstract="true" name="OtherLiabilitiesNoncurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_OtherLiabilitiesCurrentMember" abstract="true" name="OtherLiabilitiesCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_Borrowings1Member" abstract="true" name="Borrowings1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="dec_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems" abstract="true" name="DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
</xs:schema>
