<?xml version="1.0" encoding="utf-8"?>
<InstanceReport xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>1.0.0.3</Version>
  <hasSegments>false</hasSegments>
  <ReportName>COMMITMENTS AND CONTINGENCIES</ReportName>
  <RoundingOption />
  <Columns>
    <Column>
      <LabelColumn>false</LabelColumn>
      <Id>1</Id>
      <Labels>
        <Label Id="1" Label="12 Months Ended" />
        <Label Id="2" Label="Dec. 31, 2009" />
        <Label Id="4" Label="USD / shares" />
      </Labels>
      <CurrencySymbol>$</CurrencySymbol>
      <hasSegments>false</hasSegments>
      <hasScenarios>false</hasScenarios>
      <Segments />
      <Scenarios />
      <Units>
        <Unit>
          <UnitID>USD</UnitID>
          <UnitType>Standard</UnitType>
          <StandardMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema>
            <MeasureValue>USD</MeasureValue>
            <MeasureNamespace>iso4217</MeasureNamespace>
          </StandardMeasure>
          <Scale>0</Scale>
        </Unit>
        <Unit>
          <UnitID>USDPerShare</UnitID>
          <UnitType>Divide</UnitType>
          <NumeratorMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/iso4217</MeasureSchema>
            <MeasureValue>USD</MeasureValue>
            <MeasureNamespace>iso4217</MeasureNamespace>
          </NumeratorMeasure>
          <DenominatorMeasure>
            <MeasureSchema>http://www.xbrl.org/2003/instance</MeasureSchema>
            <MeasureValue>shares</MeasureValue>
            <MeasureNamespace>xbrli</MeasureNamespace>
          </DenominatorMeasure>
          <Scale>0</Scale>
        </Unit>
      </Units>
    </Column>
  </Columns>
  <Rows>
    <Row>
      <Id>2</Id>
      <Label>NOTES TO CONSOLIDATED FINANCIAL STATEMENTS</Label>
      <Level>0</Level>
      <ElementName>xec_NotesToConsolidatedFinancialStatementsAbstract</ElementName>
      <ElementPrefix>xec</ElementPrefix>
      <IsBaseElement>false</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>duration</PeriodType>
      <ElementDataType>string</ElementDataType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>true</IsAbstractGroupTitle>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsEPS>false</IsEPS>
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText />
          <NonNumericTextHeader />
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
        </Cell>
      </Cells>
      <ElementDefenition>No definition available.</ElementDefenition>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
    <Row>
      <Id>3</Id>
      <Label>COMMITMENTS AND CONTINGENCIES</Label>
      <Level>1</Level>
      <ElementName>us-gaap_CommitmentsAndContingenciesDisclosureTextBlock</ElementName>
      <ElementPrefix>us-gaap</ElementPrefix>
      <IsBaseElement>true</IsBaseElement>
      <BalanceType>na</BalanceType>
      <PeriodType>duration</PeriodType>
      <ElementDataType>string</ElementDataType>
      <ShortDefinition>No definition available.</ShortDefinition>
      <IsReportTitle>false</IsReportTitle>
      <IsSegmentTitle>false</IsSegmentTitle>
      <IsSubReportEnd>false</IsSubReportEnd>
      <IsCalendarTitle>false</IsCalendarTitle>
      <IsTuple>false</IsTuple>
      <IsAbstractGroupTitle>false</IsAbstractGroupTitle>
      <IsBeginningBalance>false</IsBeginningBalance>
      <IsEndingBalance>false</IsEndingBalance>
      <IsEPS>false</IsEPS>
      <Cells>
        <Cell>
          <Id>1</Id>
          <ShowCurrencySymbol>false</ShowCurrencySymbol>
          <IsNumeric>false</IsNumeric>
          <NumericAmount>0</NumericAmount>
          <RoundedNumericAmount>0</RoundedNumericAmount>
          <NonNumbericText>&lt;table style="font-size:10pt; font-family:'Times New Roman',times,serif;"&gt;
&lt;tr&gt;
&lt;td&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&lt;b&gt;15. COMMITMENTS AND CONTINGENCIES &lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;Shown below are the five year debt maturities and five year lease commitments as of December&amp;nbsp;31, 2009: &lt;/font&gt;&lt;/p&gt;
&lt;div style="PADDING-RIGHT: 0pt; PADDING-LEFT: 0pt; PADDING-BOTTOM: 0pt; MARGIN-LEFT: 10%; WIDTH: 80%; PADDING-TOP: 0pt; POSITION: relative"&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&lt;!-- COMMAND=ADD_TABLEWIDTH,"100%" --&gt;&lt;/font&gt;&lt;/p&gt;
&lt;!-- User-specified TAGGED TABLE --&gt;
&lt;div align="center"&gt;
&lt;table cellspacing="0" cellpadding="0" width="100%" border="0"&gt;
&lt;tr style="HEIGHT: 0px"&gt;&lt;!-- TABLE COLUMN WIDTHS SET --&gt;
&lt;td style="FONT-FAMILY: times" align="left"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="12"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" align="right" width="7"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="51"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="12"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" align="right" width="7"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="47"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="12"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" align="right" width="7"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="45"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="12"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" align="right" width="7"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="39"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="12"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" align="right" width="7"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="51"&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" width="12"&gt;&lt;/td&gt;&lt;!-- TABLE COLUMN WIDTHS END --&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px" valign="bottom"&gt;
&lt;th style="FONT-FAMILY: times" align="left"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;br /&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times" align="center" colspan="14"&gt;&lt;font size="1"&gt;&lt;b&gt;Payments Due by Period &lt;/b&gt;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px" valign="bottom"&gt;
&lt;th style="FONT-FAMILY: times" align="left"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;br /&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times" align="center" colspan="2"&gt;&lt;font size="1"&gt;&lt;b&gt;Total &lt;/b&gt;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times" align="center" colspan="2"&gt;&lt;font size="1"&gt;&lt;b&gt;Less than&lt;br /&gt;
1 Year &lt;/b&gt;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times" align="center" colspan="2"&gt;&lt;font size="1"&gt;&lt;b&gt;1-3&lt;br /&gt;
Years &lt;/b&gt;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times" align="center" colspan="2"&gt;&lt;font size="1"&gt;&lt;b&gt;4-5&lt;br /&gt;
Years &lt;/b&gt;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times" align="center" colspan="2"&gt;&lt;font size="1"&gt;&lt;b&gt;More than&lt;br /&gt;
5 Years &lt;/b&gt;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px" valign="bottom"&gt;
&lt;th style="FONT-FAMILY: times" align="left"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;br /&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times" align="center" colspan="14"&gt;&lt;font size="1"&gt;&lt;b&gt;(In thousands)&lt;/b&gt;&lt;/font&gt;&lt;br /&gt;&lt;/th&gt;
&lt;th style="FONT-FAMILY: times"&gt;&lt;font size="1"&gt;&amp;nbsp;&lt;/font&gt;&lt;/th&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px" valign="top" bgcolor="#CCEEFF"&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;
&lt;p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times"&gt;&lt;font size="2"&gt;Long term debt (face value)&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;394,450&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;&amp;#151;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;25,000&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;&amp;#151;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;369,450&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="HEIGHT: 0px" valign="top" bgcolor="white"&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;
&lt;p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times"&gt;&lt;font size="2"&gt;Operating leases&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;20,994&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;5,092&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;9,588&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;6,032&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;$&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom" align="right"&gt;&lt;font size="2"&gt;282&lt;/font&gt;&lt;/td&gt;
&lt;td style="FONT-FAMILY: times" valign="bottom"&gt;&lt;font size="2"&gt;&amp;nbsp;&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/div&gt;
&lt;!-- end of user-specified TAGGED TABLE --&gt;&lt;/div&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&lt;b&gt;&lt;i&gt;Litigation&lt;/i&gt;&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;In January 2009, the Tulsa County District Court issued a judgment in the H.B. Krug, et al versus Helmerich&amp;nbsp;&amp;amp; Payne,&amp;nbsp;Inc. ("H&amp;amp;P") case. This lawsuit was originally filed in 1998 and addressed H&amp;amp;P's conduct pertaining to a 1989 take-or-pay settlement, along with potential drainage issues and other related matters. Damages of $6.9&amp;nbsp;million, plus $119.5&amp;nbsp;million for disgorgement of H&amp;amp;P's estimated potential compounded profit since 1989 resulting from the noted damages, were awarded to plaintiff royalty owners for a total of $126.4&amp;nbsp;million. This amount was subsequently adjusted by the court to a total of $119.6&amp;nbsp;million. Pursuant to the 2002 spin-off transaction to shareholders of H&amp;amp;P by which Cimarex became a publicly-traded entity, Cimarex assumed the assets and liabilities of H&amp;amp;P's exploration and production business. In 2008 we had accrued litigation expense of $119.6&amp;nbsp;million for this lawsuit. During 2009, we have accrued an additional $9.4&amp;nbsp;million. We have appealed the District Court's judgments. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;In the normal course of business, we have other various litigation related matters. We assess the probability of estimable amounts related to litigation matters in accordance with guidance established by the FASB and adjust our accruals accordingly. For the year 2009, we had approximately $10.0&amp;nbsp;million of such expenses. Though some of the related claims may be significant, the resolution of them we believe, individually or in the aggregate, would not have a material adverse effect on our financial condition or results of operations. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&lt;b&gt;&lt;i&gt;Other&lt;/i&gt;&lt;/b&gt;&lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;We have a large development project in Sublette County, Wyoming where we are developing the deep Madison gas formation and constructing a gas processing plant. At December&amp;nbsp;31, 2009, we had commitments of $151.2&amp;nbsp;million relating to construction of the gas processing plant of which $96.2&amp;nbsp;million is subject to a construction contract. The total cost of the project will approximate $345&amp;nbsp;million. Pursuant to the terms of our operating agreement with our partners in this project, we will be reimbursed by them for 42.5% of the costs. The gas processing plant is subject to a delivery commitment agreement over a 20&amp;nbsp;year period, commencing December, 2011. If no deliveries were made, the maximum amount that would be payable under the agreement would be approximately $43&amp;nbsp;million. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;We have drilling commitments of approximately $72.9&amp;nbsp;million consisting of obligations to complete drilling wells in progress at December&amp;nbsp;31, 2009. We also have minimum expenditure commitments of $50.7&amp;nbsp;million to secure the use of drilling rigs. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;At December&amp;nbsp;31, 2009, we have a purchase commitment of $11.1&amp;nbsp;million for construction of an aircraft. The total cost of the aircraft is $12.3&amp;nbsp;million with an option to trade in our existing aircraft. The completion of the aircraft is expected to be no later than October&amp;nbsp;30, 2010. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;At December&amp;nbsp;31, 2009, we had firm sales contracts to deliver approximately 1.9 Bcf of natural gas over the next three months. If this gas is not delivered, our financial commitment would be approximately $11.1&amp;nbsp;million. This commitment will fluctuate due to price volatility and actual volumes delivered. However, we do not anticipate that a financial commitment will be due. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;In connection with a gas gathering and processing agreement, we have commitments to deliver 55.7&amp;nbsp;Bcf of gas over the next four years. If no gas was delivered, the maximum amount that would be payable under these commitments would be approximately $41.6&amp;nbsp;million, some of which will be reimbursed by working interest owners who are selling with us under our marketing agreement. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;We have other various delivery commitments in the normal course of business, none of which are individually material. In aggregate these commitments have a maximum amount that would be payable, if no gas is delivered, of approximately $4.7&amp;nbsp;million, some of which will be reimbursed by working interest owners who are selling with us under our marketing agreements. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;We have non-cancelable operating leases for office and parking space in Denver, Tulsa, Dallas, and for small district and field offices. Rental expense for the operating leases totaled $6&amp;nbsp;million, $6.4&amp;nbsp;million, and $5.9&amp;nbsp;million for the years ended December&amp;nbsp;31, 2009, 2008, and 2007, respectively. &lt;/font&gt;&lt;/p&gt;
&lt;p style="FONT-FAMILY: times; TEXT-ALIGN: justify"&gt;&lt;font size="2"&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;All of the noted commitments were routine and were made in the normal course of our business.&lt;/font&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;
</NonNumbericText>
          <NonNumericTextHeader>15. COMMITMENTS AND CONTINGENCIES
&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;Shown below are the five year debt maturities and five year lease</NonNumericTextHeader>
          <FootnoteIndexer />
          <hasSegments>false</hasSegments>
          <hasScenarios>false</hasScenarios>
        </Cell>
      </Cells>
      <ElementDefenition>No definition available.</ElementDefenition>
      <ElementReferences>No authoritative reference available.</ElementReferences>
      <IsTotalLabel>false</IsTotalLabel>
    </Row>
  </Rows>
  <Footnotes />
  <ComparabilityReport>false</ComparabilityReport>
  <NumberOfCols>1</NumberOfCols>
  <NumberOfRows>2</NumberOfRows>
  <HasScenarios>false</HasScenarios>
  <MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel>
  <SharesRoundingLevel>UnKnown</SharesRoundingLevel>
  <PerShareRoundingLevel>UnKnown</PerShareRoundingLevel>
  <HasPureData>false</HasPureData>
  <SharesShouldBeRounded>true</SharesShouldBeRounded>
</InstanceReport>
