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  <xsd:element id="cwei_PercentageOfEconomicInterestsInSpecifiedWellsDrilledOrAcquiredSubjectedToPlan" name="PercentageOfEconomicInterestsInSpecifiedWellsDrilledOrAcquiredSubjectedToPlan" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_PercentageOfSubsequentExpensesPaidByParticipants" name="PercentageOfSubsequentExpensesPaidByParticipants" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_PercentageOfSubsequentQuarterlyBonusAmountsAfterFullVestingDatePayableToParticipants" name="PercentageOfSubsequentQuarterlyBonusAmountsAfterFullVestingDatePayableToParticipants" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_PercentageOfSubsequentRevenuesReceivedByParticipants" name="PercentageOfSubsequentRevenuesReceivedByParticipants" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_PercentageOfWorkingInterestInWell" name="PercentageOfWorkingInterestInWell" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_ProceedsFromSaleOfProductiveAssetsNonCash" name="ProceedsFromSaleOfProductiveAssetsNonCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cwei_ProceedsFromVolumetricProductionPayment" name="ProceedsFromVolumetricProductionPayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_ProductionPeriodAxis" name="ProductionPeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_ProductionPeriodDomain" name="ProductionPeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_QuarterlyBonusAmountPercentageOfAfterPayoutCashFlowFromWellsDrilledOrRecompletedInSpecifiedAreasOne" name="QuarterlyBonusAmountPercentageOfAfterPayoutCashFlowFromWellsDrilledOrRecompletedInSpecifiedAreasOne" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_QuarterlyBonusAmountPercentageOfAfterPayoutCashFlowFromWellsDrilledOrRecompletedInSpecifiedAreasTwo" name="QuarterlyBonusAmountPercentageOfAfterPayoutCashFlowFromWellsDrilledOrRecompletedInSpecifiedAreasTwo" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_SaleOfProductiveAssetsConsiderationAmount" name="SaleOfProductiveAssetsConsiderationAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_SalesOfAssetsAndImpairmentsOfInventory" name="SalesOfAssetsAndImpairmentsOfInventory" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_SalesOfAssetsAndImpairmentsOfInventoryDisclosureTextBlock" name="SalesOfAssetsAndImpairmentsOfInventoryDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_ScheduleOfAggregateCompensationUnderOtherThanShareBasedCompensationArrangementBalanceSheetLocationTableTextBlock" name="ScheduleOfAggregateCompensationUnderOtherThanShareBasedCompensationArrangementBalanceSheetLocationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_ScheduleOfChangesInDeferredRevenueTableTextBlock" name="ScheduleOfChangesInDeferredRevenueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_ScheduleOfCompensationArrangementOtherThanShareBasedCompensationTable" name="ScheduleOfCompensationArrangementOtherThanShareBasedCompensationTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_ScheduleOfNetGainLossOnSalesOfAssetsAndImpairmentOfInventoryTableTextBlock" name="ScheduleOfNetGainLossOnSalesOfAssetsAndImpairmentOfInventoryTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_SeismicAndOtherCost" name="SeismicAndOtherCost" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_SeniorNotes775PercentDue2013Member" name="SeniorNotes775PercentDue2013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_SeniorNotes775PercentDue2019Member" name="SeniorNotes775PercentDue2019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_ShareBasedCompensationOptionAndIncentivePlansDisclosureTextBlock" name="ShareBasedCompensationOptionAndIncentivePlansDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cwei_SouthwestRoyaltiesRewardPlanMember" name="SouthwestRoyaltiesRewardPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cwei_WorkingInterestNumberOfWells" name="WorkingInterestNumberOfWells" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
</xsd:schema>
