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  <xsd:element abstract="true" id="mcf_LitigationCaseFiledByMineralInterestOwnerHarrisCountyMember" name="LitigationCaseFiledByMineralInterestOwnerHarrisCountyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_LossContingencyAdditionalPortionofMineralInterestClaimedbyPlaintiff" name="LossContingencyAdditionalPortionofMineralInterestClaimedbyPlaintiff" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_LossContingencyNumberOfWells" name="LossContingencyNumberOfWells" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_MaryRoseNumber4Member" name="MaryRoseNumber4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_MaryRoseNumber5Member" name="MaryRoseNumber5Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_MaximumPeriodOfInterestRateOnFloatingRateDebt" name="MaximumPeriodOfInterestRateOnFloatingRateDebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_MergerConversionRatioSharesinAcquirertobeReceivedbyAcquireeperShareofCommonStock" name="MergerConversionRatioSharesinAcquirertobeReceivedbyAcquireeperShareofCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element id="mcf_MinimumFutureLeasePaymentsForDelayRentalsAndOperatingLeasesDueInFiveYearsAndThereafter" name="MinimumFutureLeasePaymentsForDelayRentalsAndOperatingLeasesDueInFiveYearsAndThereafter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
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  <xsd:element id="mcf_MinimumFutureLeasePaymentsForDelayRentalsAndOperatingLeasesDueInTwoYears" name="MinimumFutureLeasePaymentsForDelayRentalsAndOperatingLeasesDueInTwoYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
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  <xsd:element id="mcf_MinimumFutureLeasePaymentsForDelayRentalsAndOperatingLeasesTotal" name="MinimumFutureLeasePaymentsForDelayRentalsAndOperatingLeasesTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
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  <xsd:element abstract="true" id="mcf_MoblizeIncMember" name="MoblizeIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_MrJuneauMember" name="MrJuneauMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_MrRomanoMember" name="MrRomanoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="mcf_NaturalGasReservesContractMember" name="NaturalGasReservesContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="mcf_NewWellsDrilledMember" name="NewWellsDrilledMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_NonCashIncreaseDecreaseinAccruedCapitalExpenditures" name="NonCashIncreaseDecreaseinAccruedCapitalExpenditures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="mcf_NumberOfLeaseBlocksOilAndGas" name="NumberOfLeaseBlocksOilAndGas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="mcf_NumberOfseatsOnBoardOfDirectors" name="NumberOfseatsOnBoardOfDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <element id="mcf_NumberofMonthsofPotentialRevenueLoss" name="NumberofMonthsofPotentialRevenueLoss" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element abstract="true" id="mcf_OaktreeCapitalPartnersMember" name="OaktreeCapitalPartnersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_OilandGasPropertyPercentageInterestSold" name="OilandGasPropertyPercentageInterestSold" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mcf_OlympicMember" name="OlympicMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_OtherFinancialInformationAbstract" name="OtherFinancialInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_OverridingRoyaltyInterestEmployeeBenefitOilAndGasProperties" name="OverridingRoyaltyInterestEmployeeBenefitOilAndGasProperties" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="mcf_PaymentForCostOfOilAndGasProspects" name="PaymentForCostOfOilAndGasProspects" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mcf_PaymentundertheAdvisoryAgreement" name="PaymentundertheAdvisoryAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_PayoutOfAllCostsMember" name="PayoutOfAllCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_RBCCreditFacilityMember" name="RBCCreditFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_RelatedPartyTransactionOilAndGasPropertiesAbstract" name="RelatedPartyTransactionOilAndGasPropertiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_RepublicExplorationLlcMember" name="RepublicExplorationLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_RevenuePaymentsToWellOwnersRelatedParties" name="RevenuePaymentsToWellOwnersRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="mcf_RoyaltiesAndWorkingInterestsPayable" name="RoyaltiesAndWorkingInterestsPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="mcf_RoyaltiesandRevenuesPayableCurrent" name="RoyaltiesandRevenuesPayableCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="mcf_ScheduleOfOilAndGasOwnershipInterestsTable" name="ScheduleOfOilAndGasOwnershipInterestsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_ScheduleOfOilAndGasOwnershipInterestsTableTextBlock" name="ScheduleOfOilAndGasOwnershipInterestsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_ScheduleofCurrentAssetsandCurrentLiabilitiesTableTextBlock" name="ScheduleofCurrentAssetsandCurrentLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_ShareRepurchaseProgramsAbstract" name="ShareRepurchaseProgramsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_ShareRepurchaseProgramsTextBlock" name="ShareRepurchaseProgramsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsWeightedAverageForfeitureRate" name="SharebasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsWeightedAverageForfeitureRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_ShellTradingUsCompanyMember" name="ShellTradingUsCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_ShipShoal263Member" name="ShipShoal263Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_ShipShoal83Member" name="ShipShoal83Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_SignificantAccountingPoliciesLineItems" name="SignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_SignificantAccountingPoliciesTable" name="SignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_SouthTimbalier17Member" name="SouthTimbalier17Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_StockIncentivePlan2005Member" name="StockIncentivePlan2005Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_StockOptionsIssuedpursuanttoacquisition" name="StockOptionsIssuedpursuanttoacquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_SubsidiaryGuaranteePolicyTextBlock" name="SubsidiaryGuaranteePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_SunocoIncMember" name="SunocoIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <element id="mcf_TemporaryBasisDifferencesInNaturalGasAndOilPropertiesAndOther" name="TemporaryBasisDifferencesInNaturalGasAndOilPropertiesAndOther" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element abstract="true" id="mcf_ThroughProductionMember" name="ThroughProductionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="mcf_TotalInvestmentCommitmentInAffiliatesWithOtherParties" name="TotalInvestmentCommitmentInAffiliatesWithOtherParties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_TuscaloosaMarineShaleMember" name="TuscaloosaMarineShaleMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_Vermilion170Member" name="Vermilion170Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="mcf_WellsFargoMember" name="WellsFargoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <element id="mcf_WorkingInterestsInOilAndGasProperties" name="WorkingInterestsInOilAndGasProperties" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShipShoal255WellMember" name="ShipShoal255WellMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_TaxExpenseBenefitAssociatedWithEquityMethodInvestmentIncomeLoss" name="TaxExpenseBenefitAssociatedWithEquityMethodInvestmentIncomeLoss" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ThirdPartyMember" name="ThirdPartyMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ScheduleOfRelatedPartyBalancesTableTextBlock" name="ScheduleOfRelatedPartyBalancesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_RealizedGainLossOnDerivatives" name="RealizedGainLossOnDerivatives" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_RelatedPartyMonthlyAdvisoryFee" name="RelatedPartyMonthlyAdvisoryFee" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ContaroAdvisoryMember" name="ContaroAdvisoryMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_RelatedPartyPercentageFeeOfCashProfits" name="RelatedPartyPercentageFeeOfCashProfits" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_MaryRoseNumber1Member" name="MaryRoseNumber1Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_MaryRoseNumber2To3Member" name="MaryRoseNumber2To3Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ProceedsFromJointInterestBillingsRelatedParty" name="ProceedsFromJointInterestBillingsRelatedParty" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_A2009PlanDirectorsMember" name="A2009PlanDirectorsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NoncashOrPartNoncashAcquisitionPrepaidAssets" name="NoncashOrPartNoncashAcquisitionPrepaidAssets" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NoncashOrPartNoncashAcquisitionProvedNaturalGasAndOilProperties" name="NoncashOrPartNoncashAcquisitionProvedNaturalGasAndOilProperties" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NoncashOrPartNoncashAcquisitionDeferredTaxAsset" name="NoncashOrPartNoncashAcquisitionDeferredTaxAsset" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NoncashOrPartNoncashAcquisitionsAssetRetirementObligations" name="NoncashOrPartNoncashAcquisitionsAssetRetirementObligations" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ExpectedFuturePorceedsFromSaleOfInvestment" name="ExpectedFuturePorceedsFromSaleOfInvestment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_UnprovedPropertiesWithExpiringLeasesMember" name="UnprovedPropertiesWithExpiringLeasesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_TargetMember" name="TargetMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_StockOptionAwardsBasedOnOfSalary" name="StockOptionAwardsBasedOnOfSalary" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_CeoCfoAndThreeDirectorsMember" name="CeoCfoAndThreeDirectorsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_BoardOfDirectorsMember" name="BoardOfDirectorsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_LeaseBlockPurchaseOneMember" name="LeaseBlockPurchaseOneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_LeaseBlockPurchaseTwoMember" name="LeaseBlockPurchaseTwoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_LeaseBlockPurchaseThreeMember" name="LeaseBlockPurchaseThreeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_UndrilledOffshoreLeasesMember" name="UndrilledOffshoreLeasesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_OfficersAndVicePresidentsMember" name="OfficersAndVicePresidentsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NewEmployeesMember" name="NewEmployeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueGranted" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueGranted" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueCanceledAndForfeited" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueCanceledAndForfeited" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NewAndExistingEmployeesMember" name="NewAndExistingEmployeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_AssetRetirementObligationSales" name="AssetRetirementObligationSales" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_LouisianaStateTaxingAuthorityMember" name="LouisianaStateTaxingAuthorityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_NumberOfProspectFeesPaid" name="NumberOfProspectFeesPaid" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsVestedWeightedAverageFairValuePerShare" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsVestedWeightedAverageFairValuePerShare" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpectedToVestOutstandingNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpectedToVestOutstandingNumber" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpectedToVestOutstandingWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpectedToVestOutstandingWeightedAverageExercisePrice" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpectedToVestIntrinsicValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsExpectedToVestIntrinsicValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_VicePresidentOperationsMember" name="VicePresidentOperationsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_VicePresidentEngineeringMember" name="VicePresidentEngineeringMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_VicePresidentExplorationMember" name="VicePresidentExplorationMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_Incomelossfromequitymethodinvestmentsnetoftax" name="Incomelossfromequitymethodinvestmentsnetoftax" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_DeferredIncomeTaxes" name="DeferredIncomeTaxes" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_The2005PlanEmployeesMember" name="The2005PlanEmployeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_MadisonGrimesandzavalaDimmittKarnescountiesMember" name="MadisonGrimesandzavalaDimmittKarnescountiesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ElmhillprojectMember" name="ElmhillprojectMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_EnergytransfercompanyMember" name="EnergytransfercompanyMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_GashedgesFeb2016July2016Nov2016Dec2016Member" name="GashedgesFeb2016July2016Nov2016Dec2016Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_GashedgesAug2016Oct2016Member" name="GashedgesAug2016Oct2016Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_Assetretirementobligationotheradjustments" name="Assetretirementobligationotheradjustments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_Revolvingcreditfacilitymarginrate" name="Revolvingcreditfacilitymarginrate" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_MadisoncountycaseMember" name="MadisoncountycaseMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_Deferredtaxassetoilandgasproperties" name="Deferredtaxassetoilandgasproperties" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_DissolutionOfAffiliate" name="DissolutionOfAffiliate" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_CommodityDerivativeFlowRate" name="CommodityDerivativeFlowRate" nillable="true" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ReductionInSalaryUnderSalaryReplacementProgram" name="ReductionInSalaryUnderSalaryReplacementProgram" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_OfficeEmployeesMember" name="OfficeEmployeesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_CommittmentsAndContingneciesLineItems" name="CommittmentsAndContingneciesLineItems" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_CommittmentsAndContingenciesTable" name="CommittmentsAndContingenciesTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_ImpairmentOfNaturalGasAndOilProperties" name="ImpairmentOfNaturalGasAndOilProperties" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_MarginRate" name="MarginRate" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_GasHedgesNov2016Dec2016Member" name="GasHedgesNov2016Dec2016Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="mcf_GasHedgesFeb2016July2016Member" name="GasHedgesFeb2016July2016Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>


