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  <xs:element id="ftk_EffectiveIncomeTaxRateReconciliationEffectOfTaxRateDifferencesOfNOLCarrybackPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationEffectOfTaxRateDifferencesOfNOLCarrybackPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ftk_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_StockIssuedDuringPeriodSharesRestrictedStockUnitsVested" abstract="false" name="StockIssuedDuringPeriodSharesRestrictedStockUnitsVested" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonVestedOptionsExpiredNumberOfShares" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonVestedOptionsExpiredNumberOfShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ftk_PaycheckProtectionProgramCARESActMember" abstract="true" name="PaycheckProtectionProgramCARESActMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_DefinedContributionPlanMatchingContributionsAxis" abstract="true" name="DefinedContributionPlanMatchingContributionsAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="ftk_PercentageOfNetOperatingLossCarryforwardThatCanOffsetTaxableIncome" abstract="false" name="PercentageOfNetOperatingLossCarryforwardThatCanOffsetTaxableIncome" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ftk_BusinessCombinationExcessWorkingCapitalAssumed" abstract="false" name="BusinessCombinationExcessWorkingCapitalAssumed" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_ExcessTaxBenefitRelatedToShareBasedAwardsShares" abstract="false" name="ExcessTaxBenefitRelatedToShareBasedAwardsShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ftk_DeferredTaxAssetsIntangibleAssets" abstract="false" name="DeferredTaxAssetsIntangibleAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_AccruedLiabilitiesSeveranceCostsCurrent" abstract="false" name="AccruedLiabilitiesSeveranceCostsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_ImpairmentOfPropertyAndEquipmentAndIntangibleAssets" abstract="false" name="ImpairmentOfPropertyAndEquipmentAndIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherAssetsLiabilities" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherAssetsLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_NoncashLeaseExpense" abstract="false" name="NoncashLeaseExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract" abstract="true" name="OperatingLeaseAssetsAndLiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ftk_DebtInstrumentConvertibleConversionPriceAtMaturity" abstract="false" name="DebtInstrumentConvertibleConversionPriceAtMaturity" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_DeferredTaxLiabilitiesRightOfUseAsset" abstract="false" name="DeferredTaxLiabilitiesRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_WallerFacilityMember" abstract="true" name="WallerFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_PropertyInWallerTexasMember" abstract="true" name="PropertyInWallerTexasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_EffectiveIncomeTaxRateReconciliationPermanentDifferencesRelatedToCARESAct" abstract="false" name="EffectiveIncomeTaxRateReconciliationPermanentDifferencesRelatedToCARESAct" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ftk_FinancingLeaseCost" abstract="false" name="FinancingLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_InventoryPurchaseCommitmentProvisionAndSettlement" abstract="false" name="InventoryPurchaseCommitmentProvisionAndSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_MinimumChemicalPurchaseRequirementForHydraulicFracturingFleetsPercent" abstract="false" name="MinimumChemicalPurchaseRequirementForHydraulicFracturingFleetsPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ftk_ScheduleOfInventoryValuationReserveChangesTableTextBlock" abstract="false" name="ScheduleOfInventoryValuationReserveChangesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ftk_EarnOutProvisionThresholdOne" abstract="false" name="EarnOutProvisionThresholdOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_ProFracServicesLLCMember" abstract="true" name="ProFracServicesLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_A2019PlanMember" abstract="true" name="A2019PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_PrivateInvestmentInPublicEquityMember" abstract="true" name="PrivateInvestmentInPublicEquityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_AssetsMeasuredatFairValueonaNonrecurringBasisTable" abstract="true" name="AssetsMeasuredatFairValueonaNonrecurringBasisTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ftk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNetWorkingCapitalNetOfCashAndInventory" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNetWorkingCapitalNetOfCashAndInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonVestedOptionsExpiredWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsNonVestedOptionsExpiredWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_PercentageOfIndefinteCarryforwardThatCanOffsetTaxableIncome" abstract="false" name="PercentageOfIndefinteCarryforwardThatCanOffsetTaxableIncome" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ftk_A2007PlanMember" abstract="true" name="A2007PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_ProceedsFromPaymentForPatentsAndOtherIntangibleAssets" abstract="false" name="ProceedsFromPaymentForPatentsAndOtherIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_PreferredStockMinimumNumberOfSeriesAuthorized" abstract="false" name="PreferredStockMinimumNumberOfSeriesAuthorized" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ftk_ProFracAgreementMember" abstract="true" name="ProFracAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_BusinessCombinationEarnOutPayments" abstract="false" name="BusinessCombinationEarnOutPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeePurchasePowerDuringOfferingPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeePurchasePowerDuringOfferingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ftk_A2010PlanMember" abstract="true" name="A2010PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_LeasesWeightedAverageDiscountRateAbstract" abstract="true" name="LeasesWeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_EarnOutProvisionThresholdTwo" abstract="false" name="EarnOutProvisionThresholdTwo" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_TreasuryStockSharesForfeited" abstract="false" name="TreasuryStockSharesForfeited" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ftk_NumberOfPotentialEarnOutProvisions" abstract="false" name="NumberOfPotentialEarnOutProvisions" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ftk_LessorOperatingLeaseMonthlyRent" abstract="false" name="LessorOperatingLeaseMonthlyRent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_ExcessTaxBenefitRelatedToShareBasedAwardsValue" abstract="false" name="ExcessTaxBenefitRelatedToShareBasedAwardsValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_CustomerBMember" abstract="true" name="CustomerBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_A2019And2018PlanMember" abstract="true" name="A2019And2018PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_TerpeneSupplyAgreementMember" abstract="true" name="TerpeneSupplyAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_RestrictedStockPerformanceBasedMember" abstract="true" name="RestrictedStockPerformanceBasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="ftk_FinanceLeasePrincipalPaymentsNetOfPrepayments" abstract="false" name="FinanceLeasePrincipalPaymentsNetOfPrepayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_DefinedContributionPlanMatchingContributionsDomain" abstract="true" name="DefinedContributionPlanMatchingContributionsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_PercentageOfCostRequiredToBeAllocableToPayrollExpense" abstract="false" name="PercentageOfCostRequiredToBeAllocableToPayrollExpense" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="ftk_BusinessCombinationAssumedPayrollProtectionProgramLoan" abstract="false" name="BusinessCombinationAssumedPayrollProtectionProgramLoan" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_PIPETransactionMember" abstract="true" name="PIPETransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_MarketBasedOptionsMember" abstract="true" name="MarketBasedOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_ChemistryTechnologiesSegmentMember" abstract="true" name="ChemistryTechnologiesSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeePurchasePowerEachYearValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeePurchasePowerEachYearValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract" abstract="true" name="FinanceLeaseAssetsAndLiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAndCancelled" abstract="false" name="ShareBasedPaymentArrangementSharesWithheldForTaxWithholdingObligationAndCancelled" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ftk_InventoryValuationReservesRollForwardAbstract" abstract="true" name="InventoryValuationReservesRollForwardAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_A2018PlanMember" abstract="true" name="A2018PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_FinanceLeaseExpenseAbstract" abstract="true" name="FinanceLeaseExpenseAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_DataAnalyticsSegmentMember" abstract="true" name="DataAnalyticsSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_WarehouseFacilityInMonahansTexasMember" abstract="true" name="WarehouseFacilityInMonahansTexasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_BuildingsAndLeaseholdImprovementsMember" abstract="true" name="BuildingsAndLeaseholdImprovementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_AccruedLiabilitiesLossOnPurchaseCommitmentsCurrent" abstract="false" name="AccruedLiabilitiesLossOnPurchaseCommitmentsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_EmployeeStockPurchasePlanESPPSharesPurchasedTotalFairValue" abstract="false" name="EmployeeStockPurchasePlanESPPSharesPurchasedTotalFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_InventoryValuationReservesChargedToProvisions" abstract="false" name="InventoryValuationReservesChargedToProvisions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_PaymentsToAcquirePropertyPlantAndEquipmentExcludingCapitalizedCost" abstract="false" name="PaymentsToAcquirePropertyPlantAndEquipmentExcludingCapitalizedCost" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_A2014PlanMember" abstract="true" name="A2014PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_JP3PaycheckProtectionProgramCARESActMember" abstract="true" name="JP3PaycheckProtectionProgramCARESActMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_CustomerMember" abstract="true" name="CustomerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_JP3MeasurementLLCMember" abstract="true" name="JP3MeasurementLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_DefinedContributionPlanMatchingRangeUpTo2PercentMember" abstract="true" name="DefinedContributionPlanMatchingRangeUpTo2PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_ChangeInFairValueContingentConsideration" abstract="false" name="ChangeInFairValueContingentConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_PaymentsForContingentConsiderationFinancing" abstract="false" name="PaymentsForContingentConsiderationFinancing" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_IntangibleAssetsInProgressMember" abstract="true" name="IntangibleAssetsInProgressMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_TrademarksAndBrandNamesMember" abstract="true" name="TrademarksAndBrandNamesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ftk_PayrollTaxCredit" abstract="false" name="PayrollTaxCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ftk_AssetsMeasuredatFairValueonaNonrecurringBasisLineItems" abstract="true" name="AssetsMeasuredatFairValueonaNonrecurringBasisLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_OperatingLeasePaymentsAbstract" abstract="true" name="OperatingLeasePaymentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOfferingPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOfferingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
