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  <xs:element id="hp_AdjustedSecuredOvernightFinancingRateSOFRMember" abstract="true" name="AdjustedSecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_OneMonthAdjustedSecuredOvernightFinancingRateSOFRMember" abstract="true" name="OneMonthAdjustedSecuredOvernightFinancingRateSOFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_SecuredOvernightFinancingRateSOFRApplicableMarginRateMember" abstract="true" name="SecuredOvernightFinancingRateSOFRApplicableMarginRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_AdjustedBaseRateApplicableMarginRateMember" abstract="true" name="AdjustedBaseRateApplicableMarginRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_OneMonthSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember" abstract="true" name="OneMonthSecuredOvernightFinancingRateSOFROvernightIndexSwapRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_DebtInstrumentTermPeriodAfterFunding" abstract="false" name="DebtInstrumentTermPeriodAfterFunding" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hp_DebtInstrumentInterestRateFixedPercentage" abstract="false" name="DebtInstrumentInterestRateFixedPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hp_DebtInstrumentInterestRatePeriodOne" abstract="false" name="DebtInstrumentInterestRatePeriodOne" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hp_DebtServiceCoverageRatio" abstract="false" name="DebtServiceCoverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="hp_RevolvingCommitmentsUnderAmendedCreditFacilityExpire" abstract="false" name="RevolvingCommitmentsUnderAmendedCreditFacilityExpire" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_RevolvingCommitmentsUnderAmendedCreditFacilityMature" abstract="false" name="RevolvingCommitmentsUnderAmendedCreditFacilityMature" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_LineOfCreditNumberOfLoanExtensions" abstract="false" name="LineOfCreditNumberOfLoanExtensions" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="hp_LineOfCreditFacilityMaturityRenewalTerm" abstract="false" name="LineOfCreditFacilityMaturityRenewalTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hp_LineOfCreditFacilityAccordionIncrease" abstract="false" name="LineOfCreditFacilityAccordionIncrease" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_DebtInstrumentPercentageTotalDebtToTotalCapitalization" abstract="false" name="DebtInstrumentPercentageTotalDebtToTotalCapitalization" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hp_MaximumLimitOfPriorityDebtOnNetWorth" abstract="false" name="MaximumLimitOfPriorityDebtOnNetWorth" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="hp_AccumulatedOtherComprehensiveIncomeLossBeforeTaxAbstract" abstract="true" name="AccumulatedOtherComprehensiveIncomeLossBeforeTaxAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalanceOnAchievementOfPerformanceTargets" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognizedIncludingOpeningBalanceOnAchievementOfPerformanceTargets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_NumberOfMonthsOfUnsatisfiedPerformanceObligationsRepresentedInBacklogContractsWithMonthToMonthTerms" abstract="false" name="NumberOfMonthsOfUnsatisfiedPerformanceObligationsRepresentedInBacklogContractsWithMonthToMonthTerms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="hp_ChangeInContractWithCustomerLiabilityRollForward" abstract="true" name="ChangeInContractWithCustomerLiabilityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_ContractWithCustomerLiabilityRevenueRecognizedExcludingOpeningBalance" abstract="false" name="ContractWithCustomerLiabilityRevenueRecognizedExcludingOpeningBalance" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_AdjustmentForBasicEarningsPerShareAbstract" abstract="true" name="AdjustmentForBasicEarningsPerShareAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_IncomeLossFromContinuingOperationsBasic" abstract="false" name="IncomeLossFromContinuingOperationsBasic" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_AdjustmentForDilutedEarningsLossPerShareAbstract" abstract="true" name="AdjustmentForDilutedEarningsLossPerShareAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="hp_NonQualifiedSupplementalSavingsPlanMember" abstract="true" name="NonQualifiedSupplementalSavingsPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_TamboranResourcesLimitedMember" abstract="true" name="TamboranResourcesLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_OtherEquitySecuritiesMember" abstract="true" name="OtherEquitySecuritiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_GeothermalInvestmentsMember" abstract="true" name="GeothermalInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_ShortTermInvestmentsFairValueDisclosure" abstract="false" name="ShortTermInvestmentsFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_ADNOCDrillingMember" abstract="true" name="ADNOCDrillingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_GalileoTechnologiesMember" abstract="true" name="GalileoTechnologiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_EquitySecuritiesWithoutReadilyDeterminableFairValueMember" abstract="true" name="EquitySecuritiesWithoutReadilyDeterminableFairValueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_InvestmentShares" abstract="false" name="InvestmentShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="hp_FairValueMeasurementWithUnobservableInputsReconciliationDisposals" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationDisposals" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_FairValueAssetAcquiredTotalGainsLossesAbstract" abstract="true" name="FairValueAssetAcquiredTotalGainsLossesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_LongTermDebtExcludingCurrentMaturitiesFairValue" abstract="false" name="LongTermDebtExcludingCurrentMaturitiesFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="hp_NumberOfReportableSegmentsDisclosedByDefinitionFlag" abstract="false" name="NumberOfReportableSegmentsDisclosedByDefinitionFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_InternationalSolutionsSegmentMember" abstract="true" name="InternationalSolutionsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_OperatingSegmentsExcludingIntersegmentEliminationMember" abstract="true" name="OperatingSegmentsExcludingIntersegmentEliminationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_EliminationsAndReconcilingItemsMember" abstract="true" name="EliminationsAndReconcilingItemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedAbstract" abstract="true" name="SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="hp_InternationalSolutionsReportingUnitMember" abstract="true" name="InternationalSolutionsReportingUnitMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="hp_OtherForeignMember" abstract="true" name="OtherForeignMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
