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  <xs:element id="dec_CommodityRevenueMember" abstract="true" name="CommodityRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="dec_WeightedAverageNumberOfSharesOutstandingInformationAbstract" abstract="true" name="WeightedAverageNumberOfSharesOutstandingInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DividendsDeclaredAndPaidEquity" abstract="false" name="DividendsDeclaredAndPaidEquity" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_StockholdersEquityDomesticationTransaction" abstract="false" name="StockholdersEquityDomesticationTransaction" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CashProceedsPaymentsOnSettlementOfDerivatives" abstract="false" name="CashProceedsPaymentsOnSettlementOfDerivatives" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetRetirementObligationsSettlements" abstract="false" name="AssetRetirementObligationsSettlements" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeInstrumentsModificationsOperating" abstract="false" name="DerivativeInstrumentsModificationsOperating" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsForAssetAcquisitionsNetOfCashAcquired" abstract="false" name="PaymentsForAssetAcquisitionsNetOfCashAcquired" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentOnEarlyRetirementOfDebt" abstract="false" name="PaymentOnEarlyRetirementOfDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeInstrumentsModificationsFinancing" abstract="false" name="DerivativeInstrumentsModificationsFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_ProceedsFromLeaseModifications" abstract="false" name="ProceedsFromLeaseModifications" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsForRepurchaseOfCommonStockStockRepurchaseProgram" abstract="false" name="PaymentsForRepurchaseOfCommonStockStockRepurchaseProgram" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PaymentsForRepurchaseOfCommonStockEmployeeBenefitTrust" abstract="false" name="PaymentsForRepurchaseOfCommonStockEmployeeBenefitTrust" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionPolicyPolicyTextBlock" abstract="false" name="AssetAcquisitionPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentAfterAccumulatedDepreciationDepletionAmortizationAndImpairmentTableTextBlock" abstract="false" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentAfterAccumulatedDepreciationDepletionAmortizationAndImpairmentTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="dec_ShareBasedPaymentArrangementFairValueMeasurementInputsPerformanceSharesTableTextBlock" abstract="false" name="ShareBasedPaymentArrangementFairValueMeasurementInputsPerformanceSharesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="dec_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="dec_ScheduleOfInterestCostsIncurredTableTextBlock" abstract="false" name="ScheduleOfInterestCostsIncurredTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="dec_CommonStockConversionBasisRatio" abstract="false" name="CommonStockConversionBasisRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_RestrictedCashSecuritizationsMember" abstract="true" name="RestrictedCashSecuritizationsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_RestrictedCashOtherMember" abstract="true" name="RestrictedCashOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_BuildingAndLeaseholdImprovementsMember" abstract="true" name="BuildingAndLeaseholdImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_MidstreamAssetsMember" abstract="true" name="MidstreamAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_MaverickNaturalResourcesLLCMember" abstract="true" name="MaverickNaturalResourcesLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_CanvasEnergyInc.Member" abstract="true" name="CanvasEnergyInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_SummitNaturalResourcesLLCMember" abstract="true" name="SummitNaturalResourcesLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_MidstreamAndUpstreamAssetsMember" abstract="true" name="MidstreamAndUpstreamAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_EastTexasIIMember" abstract="true" name="EastTexasIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_CrescentPassEnergyMember" abstract="true" name="CrescentPassEnergyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_OaktreeCapitalManagementL.P.Member" abstract="true" name="OaktreeCapitalManagementL.P.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_TanosEnergyHoldingsIILLMember" abstract="true" name="TanosEnergyHoldingsIILLMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVINotesMember" abstract="true" name="ABSVINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_OaktreeTransactionNotesPayableMember" abstract="true" name="OaktreeTransactionNotesPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_PaymentsForAssetAcquisitions" abstract="false" name="PaymentsForAssetAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionDebtAssumed" abstract="false" name="AssetAcquisitionDebtAssumed" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionLiabilitiesIncurred" abstract="false" name="AssetAcquisitionLiabilitiesIncurred" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionAssetsAcquiredNetAbstract" abstract="true" name="AssetAcquisitionAssetsAcquiredNetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_AssetAcquisitionCashandEquivalents" abstract="false" name="AssetAcquisitionCashandEquivalents" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionNaturalGasAndOilProperties" abstract="false" name="AssetAcquisitionNaturalGasAndOilProperties" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionOtherAssetsNoncurrent" abstract="false" name="AssetAcquisitionOtherAssetsNoncurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionAccountsReceivableNet" abstract="false" name="AssetAcquisitionAccountsReceivableNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionOtherAssetsCurrent" abstract="false" name="AssetAcquisitionOtherAssetsCurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionDeferredIncomeTaxLiability" abstract="false" name="AssetAcquisitionDeferredIncomeTaxLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionOtherLiabilitiesNoncurrent" abstract="false" name="AssetAcquisitionOtherLiabilitiesNoncurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionAccountsPayableCurrent" abstract="false" name="AssetAcquisitionAccountsPayableCurrent" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionOtherCurrentLiabilities" abstract="false" name="AssetAcquisitionOtherCurrentLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet" abstract="false" name="AssetAcquisitionAssetsAcquiredAndLiabilitiesAssumedNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BusinessCombinationRecognizedAssetAcquiredNaturalGasAndOilProperties" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredNaturalGasAndOilProperties" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BusinessCombinationRecognizedAssetAcquiredRestrictedCash" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredRestrictedCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BusinessCombinationRecognizedAssetAcquiredDerivativeAssets" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredDerivativeAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BusinessCombinationRecognizedAssetAcquiredAssetRetirementObligationsLiabilityPortion" abstract="false" name="BusinessCombinationRecognizedAssetAcquiredAssetRetirementObligationsLiabilityPortion" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BusinessCombinationRecognizedLiabilityAssumedAccruedExpenseCurrent" abstract="false" name="BusinessCombinationRecognizedLiabilityAssumedAccruedExpenseCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_BusinessCombinationRecognizedLiabilityAssumedRevenuePayable" abstract="false" name="BusinessCombinationRecognizedLiabilityAssumedRevenuePayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_NonCoreUndevelopedAcregageMember" abstract="true" name="NonCoreUndevelopedAcregageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_VariousPropertyPlantAndEquipmentMember" abstract="true" name="VariousPropertyPlantAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_A2024DivestituresMember" abstract="true" name="A2024DivestituresMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_NonCoreNonOperatedAssetsWithinItsCentralRegionMember" abstract="true" name="NonCoreNonOperatedAssetsWithinItsCentralRegionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_OtherNonCoreUndevelopedAcreageMember" abstract="true" name="OtherNonCoreUndevelopedAcreageMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVIINotesClassANotesMember" abstract="true" name="ABSVIINotesClassANotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="dec_EquityOwnershipExcludingConsolidatedEntityAndEquityMethodInvestmentsSoldInThePeriodPercentage" abstract="false" name="EquityOwnershipExcludingConsolidatedEntityAndEquityMethodInvestmentsSoldInThePeriodPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_MarginalWellTaxCreditCarryforwardMember" abstract="true" name="MarginalWellTaxCreditCarryforwardMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_TaxCreditCarryforwardAmountExpired" abstract="false" name="TaxCreditCarryforwardAmountExpired" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_TaxCreditCarryforwardUtilized" abstract="false" name="TaxCreditCarryforwardUtilized" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_EffectiveIncomeTaxRateReconciliationForeignTaxEffectsAmountAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationForeignTaxEffectsAmountAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_EffectiveIncomeTaxRateReconciliationEquityInEarningsForeignSubsidiaryAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationEquityInEarningsForeignSubsidiaryAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_EffectiveIncomeTaxRateReconciliationNondeductibleAndNontaxableItemsAmountAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationNondeductibleAndNontaxableItemsAmountAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_EffectiveIncomeTaxRateReconciliationForeignTaxEffectsPercentAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationForeignTaxEffectsPercentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_EffectiveIncomeTaxRateReconciliationEquityInEarningsForeignSubsidiaryPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationEquityInEarningsForeignSubsidiaryPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_EffectiveIncomeTaxRateReconciliationNondeductibleAndNontaxableItemsPercentAbstract" abstract="true" name="EffectiveIncomeTaxRateReconciliationNondeductibleAndNontaxableItemsPercentAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DeferredTaxAssetsInvestmentsInPartnerships" abstract="false" name="DeferredTaxAssetsInvestmentsInPartnerships" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DeferredTaxLiabilitiesInvestmentInPartnerships" abstract="false" name="DeferredTaxLiabilitiesInvestmentInPartnerships" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentRollForward" abstract="true" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentAdditions" abstract="false" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentAdditions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentDisposals" abstract="false" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentDisposals" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentAccumulatedImpairmentDepreciationDepletionAndAmortizationRollForward" abstract="true" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentAccumulatedImpairmentDepreciationDepletionAndAmortizationRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentAcquisitions" abstract="false" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentDivestiture" abstract="false" name="OilAndGasSuccessfulEffortsMethodPropertyAndEquipmentBeforeAccumulatedDepreciationDepletionAmortizationAndImpairmentDivestiture" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PropertyPlantAndEquipmentAdditionsThroughAcquisitions" abstract="false" name="PropertyPlantAndEquipmentAdditionsThroughAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_PropertyPlantAndEquipmentFullyDepreciatedAssetsStillInUse" abstract="false" name="PropertyPlantAndEquipmentFullyDepreciatedAssetsStillInUse" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_TwoWayCollarsMember" abstract="true" name="TwoWayCollarsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ThreeWayCollarsMember" abstract="true" name="ThreeWayCollarsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_PurchasedPutsMember" abstract="true" name="PurchasedPutsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_SoldPutsMember" abstract="true" name="SoldPutsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_SoldCallsMember" abstract="true" name="SoldCallsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DerivativeAssetsLiabilitiesAbstract" abstract="true" name="DerivativeAssetsLiabilitiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_DerivativeAssetLiabilityCurrent" abstract="false" name="DerivativeAssetLiabilityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetLiabilityNoncurrent" abstract="false" name="DerivativeAssetLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DerivativeAssetCurrentMember" abstract="true" name="DerivativeAssetCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DerivativeAssetNonCurrentMember" abstract="true" name="DerivativeAssetNonCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DerivativeLiabilityCurrentMember" abstract="true" name="DerivativeLiabilityCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DerivativeLiabilityNonCurrentMember" abstract="true" name="DerivativeLiabilityNonCurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXFinancingAgreementMember" abstract="true" name="ABSXFinancingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSIAndTermLoanIMember" abstract="true" name="ABSIAndTermLoanIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVIIFinancingArrangementMember" abstract="true" name="ABSVIIFinancingArrangementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_CommodityReceivableMember" abstract="true" name="CommodityReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_OtherReceivableMember" abstract="true" name="OtherReceivableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DPLionEquityHoldcoLLCMember" abstract="true" name="DPLionEquityHoldcoLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_O2025Q2M4DividendsMember" abstract="true" name="O2025Q2M4DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_O2025Q2M5DividendsMember" abstract="true" name="O2025Q2M5DividendsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_StockRepurchasedAndRetiredDuringThePeriodAsAPercentageOfCommonStockIssuedAndOutstandingAsOfTheEndOfThePeriod" abstract="false" name="StockRepurchasedAndRetiredDuringThePeriodAsAPercentageOfCommonStockIssuedAndOutstandingAsOfTheEndOfThePeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_A2017EquityIncentivePlanMember" abstract="true" name="A2017EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_A2025EquityIncentivePlanMember" abstract="true" name="A2025EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_EmployeeRetirementPlanMember" abstract="true" name="EmployeeRetirementPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_EmployeeSavingsPlanMember" abstract="true" name="EmployeeSavingsPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuedAndOutstandingSharesAuthorizedAndReservedForIssuanceAsAPercentage" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCommonStockIssuedAndOutstandingSharesAuthorizedAndReservedForIssuanceAsAPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_ShareBasedCompensationArrangementByShareBasedPaymentAwardAverageAdjustedReturnOnEquityPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAverageAdjustedReturnOnEquityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPercentageOfInitialAwards" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPercentageOfInitialAwards" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholdersReturnPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardTotalShareholdersReturnPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_ShareBasedCompensationArrangementByShareBasedPaymentAwardAverageGrowthInFreeCashFlowAndReductionInMethaneIntensityPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAverageGrowthInFreeCashFlowAndReductionInMethaneIntensityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_NumberOfDefinedContributionPlans" abstract="false" name="NumberOfDefinedContributionPlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_NonElectiveSafeHarborEmployerContributionAndAgeWeightedEmployerContributionPercent" abstract="false" name="NonElectiveSafeHarborEmployerContributionAndAgeWeightedEmployerContributionPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsCorrelationWithComparator" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsCorrelationWithComparator" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_AssetRetirementObligationTable" abstract="true" name="AssetRetirementObligationTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_AssetRetirementObligationLineItems" abstract="true" name="AssetRetirementObligationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dec_AssetRetirementObligationDisposals" abstract="false" name="AssetRetirementObligationDisposals" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_LesseeTermOfContractOperatingLeaseAndFinanceLease" abstract="false" name="LesseeTermOfContractOperatingLeaseAndFinanceLease" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="dec_TheCreditFacilityMember" abstract="true" name="TheCreditFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_TermLoanIMember" abstract="true" name="TermLoanIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_TermLoanIIMember" abstract="true" name="TermLoanIIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSINotesMember" abstract="true" name="ABSINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSIINotesMember" abstract="true" name="ABSIINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSIVNotesMember" abstract="true" name="ABSIVNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_OaktreeSellersNotesMember" abstract="true" name="OaktreeSellersNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVIIINotesMember" abstract="true" name="ABSVIIINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSIXNotesMember" abstract="true" name="ABSIXNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXNotesMember" abstract="true" name="ABSXNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXINotesMember" abstract="true" name="ABSXINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesMember" abstract="true" name="ABSMaverickNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_NordicBondsMember" abstract="true" name="NordicBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_OtherMiscellaneousBorrowingsMember" abstract="true" name="OtherMiscellaneousBorrowingsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_SecuritizedNotesPayableMember" abstract="true" name="SecuritizedNotesPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_NumberOfNaturalGasPlants" abstract="false" name="NumberOfNaturalGasPlants" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_DebtInstrumentDiscountRate" abstract="false" name="DebtInstrumentDiscountRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_DebtInstrumentPaymentPeriodAxis" abstract="true" name="DebtInstrumentPaymentPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_DebtInstrumentPaymentPeriodDomain" abstract="true" name="DebtInstrumentPaymentPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentPaymentPeriodOneMember" abstract="true" name="DebtInstrumentPaymentPeriodOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentPaymentPeriodTwoMember" abstract="true" name="DebtInstrumentPaymentPeriodTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentAmountOfHedgedItemPercent" abstract="false" name="DebtInstrumentAmountOfHedgedItemPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_ABSIIINotesMember" abstract="true" name="ABSIIINotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVNotesMember" abstract="true" name="ABSVNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DiversifiedABSVILLCAndOaktreeMember" abstract="true" name="DiversifiedABSVILLCAndOaktreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DiversifiedABSVILLCMember" abstract="true" name="DiversifiedABSVILLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVIIINotesClassA1NotesMember" abstract="true" name="ABSVIIINotesClassA1NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSVIIINotesClassA2NotesMember" abstract="true" name="ABSVIIINotesClassA2NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSFacilityWarehouseMember" abstract="true" name="ABSFacilityWarehouseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSIXNotesClassANotesMember" abstract="true" name="ABSIXNotesClassANotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSIXNotesClassBNotesMember" abstract="true" name="ABSIXNotesClassBNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentInitialAmountDrawn" abstract="false" name="DebtInstrumentInitialAmountDrawn" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DebtInstrumentRestrictedCashInterestReserve" abstract="false" name="DebtInstrumentRestrictedCashInterestReserve" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_ABSXNotesClassA1NotesMember" abstract="true" name="ABSXNotesClassA1NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXNotesClassA2NotesMember" abstract="true" name="ABSXNotesClassA2NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXNotesClassBNotesMember" abstract="true" name="ABSXNotesClassBNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesClassA1NotesMember" abstract="true" name="ABSMaverickNotesClassA1NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesClassA2NotesMember" abstract="true" name="ABSMaverickNotesClassA2NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSMaverickNotesClassBNotesMember" abstract="true" name="ABSMaverickNotesClassBNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentPremiumPercentage" abstract="false" name="DebtInstrumentPremiumPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_ABSXINotesClassA1NotesMember" abstract="true" name="ABSXINotesClassA1NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXINotesClassA2NotesMember" abstract="true" name="ABSXINotesClassA2NotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSXINotesClassBNotesMember" abstract="true" name="ABSXINotesClassBNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantMaximumLeverageRatio" abstract="false" name="DebtInstrumentCovenantMaximumLeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantMinimumAssetCoverageRatio" abstract="false" name="DebtInstrumentCovenantMinimumAssetCoverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantMinimumBookEquityValue" abstract="false" name="DebtInstrumentCovenantMinimumBookEquityValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantMinimumLiquidityRatio" abstract="false" name="DebtInstrumentCovenantMinimumLiquidityRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_DebtInstrumentDeferredInterestAndPrincipalPaymentsNumberOfInstallments" abstract="false" name="DebtInstrumentDeferredInterestAndPrincipalPaymentsNumberOfInstallments" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantComponentAxis" abstract="true" name="DebtInstrumentCovenantComponentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantComponentDomain" abstract="true" name="DebtInstrumentCovenantComponentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantOneMember" abstract="true" name="DebtInstrumentCovenantOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantTwoMember" abstract="true" name="DebtInstrumentCovenantTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantComponentFourMember" abstract="true" name="DebtInstrumentCovenantComponentFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantBorrowingBaseAvailabilityPercentage" abstract="false" name="DebtInstrumentCovenantBorrowingBaseAvailabilityPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantTotalDebtToEBITDAXRatioMaximum" abstract="false" name="DebtInstrumentCovenantTotalDebtToEBITDAXRatioMaximum" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_DebtInstrumentCovenantCurrentAssetsToCurrentLiabilitiesRatio" abstract="false" name="DebtInstrumentCovenantCurrentAssetsToCurrentLiabilitiesRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dec_InterestExpenseDebtMiscellaneous" abstract="false" name="InterestExpenseDebtMiscellaneous" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_TermLoansMember" abstract="true" name="TermLoansMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_ABSNotesMember" abstract="true" name="ABSNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_AccruedOperatingExpense" abstract="false" name="AccruedOperatingExpense" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_AccruedCapitalExpendituresCurrent" abstract="false" name="AccruedCapitalExpendituresCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_SupplyCommitmentQuantityDueNextTwelveMonths" abstract="false" name="SupplyCommitmentQuantityDueNextTwelveMonths" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_SupplyCommitmentQuantityDueYearTwo" abstract="false" name="SupplyCommitmentQuantityDueYearTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_SupplyCommitmentQuantityDueYearThree" abstract="false" name="SupplyCommitmentQuantityDueYearThree" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_SupplyCommitmentQuantityDueYearFour" abstract="false" name="SupplyCommitmentQuantityDueYearFour" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_SupplyCommitmentQuantityDueYearFive" abstract="false" name="SupplyCommitmentQuantityDueYearFive" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_SupplyCommitmentQuantityAfterYearFive" abstract="false" name="SupplyCommitmentQuantityAfterYearFive" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_SupplyCommitmentRemainingAmountCommittedQuantity" abstract="false" name="SupplyCommitmentRemainingAmountCommittedQuantity" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:volumeItemType"/>
  <xs:element id="dec_CashPaidForAmountsIncludedInTheMeasurementOfOperatingLeaseLiabilities" abstract="false" name="CashPaidForAmountsIncludedInTheMeasurementOfOperatingLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_CashPaymentsIncludedInTheMeasurementOfFinanceLeaseLiabilities" abstract="false" name="CashPaymentsIncludedInTheMeasurementOfFinanceLeaseLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dec_A2026NordicBondsMember" abstract="true" name="A2026NordicBondsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dec_SheridanProductionCompanyMember" abstract="true" name="SheridanProductionCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
