<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<xsd:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://flotekind.com/20171231" xmlns:ftk="http://flotekind.com/20171231" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import namespace="http://fasb.org/us-gaap/2017-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2017-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2017/elts/us-roles-2017-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2017-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2017/elts/us-types-2017-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/currency/2017-01-31" schemaLocation="http://xbrl.sec.gov/currency/2017/currency-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2014-01-31" schemaLocation="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/exch/2017-01-31" schemaLocation="http://xbrl.sec.gov/exch/2017/exch-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ftk-20171231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ftk-20171231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ftk-20171231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="ftk-20171231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple" />
      <link:roleType id="Acquisitions" roleURI="http://flotekind.com/role/Acquisitions">
        <link:definition>2105100 - Disclosure - Acquisitions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsDetails" roleURI="http://flotekind.com/role/AcquisitionsDetails">
        <link:definition>2405401 - Disclosure - Acquisitions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformation" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformation">
        <link:definition>2120100 - Disclosure - Business Segment, Geographic and Major Customer Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformationAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformationAdditionalDisclosuresDetails">
        <link:definition>2420402 - Disclosure - Business Segment, Geographic and Major Customer Information (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformationAssetsByReportableSegmentsDetails" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformationAssetsByReportableSegmentsDetails">
        <link:definition>2420404 - Disclosure - Business Segment, Geographic and Major Customer Information (Assets by Reportable Segments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformationMajorCustomersDetails" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformationMajorCustomersDetails">
        <link:definition>2420406 - Disclosure - Business Segment, Geographic and Major Customer Information (Major Customers) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformationReportableSegmentsDetails" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformationReportableSegmentsDetails">
        <link:definition>2420403 - Disclosure - Business Segment, Geographic and Major Customer Information (Reportable Segments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformationRevenueByGeographicLocationDetails" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformationRevenueByGeographicLocationDetails">
        <link:definition>2420405 - Disclosure - Business Segment, Geographic and Major Customer Information (Revenue by Geographic Location) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessSegmentGeographicAndMajorCustomerInformationTables" roleURI="http://flotekind.com/role/BusinessSegmentGeographicAndMajorCustomerInformationTables">
        <link:definition>2320301 - Disclosure - Business Segment, Geographic and Major Customer Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies" roleURI="http://flotekind.com/role/CommitmentsAndContingencies">
        <link:definition>2119100 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingencies401KRetirementPlanDetails" roleURI="http://flotekind.com/role/CommitmentsAndContingencies401KRetirementPlanDetails">
        <link:definition>2419405 - Disclosure - Commitments and Contingencies (401(k) Retirement Plan )(Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesClassActionLitigationDetails" roleURI="http://flotekind.com/role/CommitmentsAndContingenciesClassActionLitigationDetails">
        <link:definition>2419402 - Disclosure - Commitments and Contingencies (Class Action Litigation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesOperatingLeasesDetails" roleURI="http://flotekind.com/role/CommitmentsAndContingenciesOperatingLeasesDetails">
        <link:definition>2419404 - Disclosure - Commitments and Contingencies (Operating Leases) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesShortSwingSettlementDetails" roleURI="http://flotekind.com/role/CommitmentsAndContingenciesShortSwingSettlementDetails">
        <link:definition>2419403 - Disclosure - Commitments and Contingencies (Short-Swing Settlement) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsAndContingenciesTables" roleURI="http://flotekind.com/role/CommitmentsAndContingenciesTables">
        <link:definition>2319301 - Disclosure - Commitments and Contingencies  (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStock" roleURI="http://flotekind.com/role/CommonStock">
        <link:definition>2118100 - Disclosure - Common Stock</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockEmployeeStockPurchasePlanDetails" roleURI="http://flotekind.com/role/CommonStockEmployeeStockPurchasePlanDetails">
        <link:definition>2418406 - Disclosure - Common Stock (Employee Stock Purchase Plan) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockReconciliationOfCommonSharesIssuedAndAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/CommonStockReconciliationOfCommonSharesIssuedAndAdditionalDisclosuresDetails">
        <link:definition>2418402 - Disclosure - Common Stock (Reconciliation of Common Shares Issued and Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockRestrictedStockAndUnitsDetails" roleURI="http://flotekind.com/role/CommonStockRestrictedStockAndUnitsDetails">
        <link:definition>2418405 - Disclosure - Common Stock (Restricted Stock and Units) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockShareBasedCompensationTreasuryStockAndStockRepurchasePlanDetails" roleURI="http://flotekind.com/role/CommonStockShareBasedCompensationTreasuryStockAndStockRepurchasePlanDetails">
        <link:definition>2418407 - Disclosure - Common Stock (Share-Based Compensation, Treasury Stock, and Stock Repurchase Plan) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockStockBasedIncentivePlansDetails" roleURI="http://flotekind.com/role/CommonStockStockBasedIncentivePlansDetails">
        <link:definition>2418403 - Disclosure - Common Stock (Stock-Based Incentive Plans) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockStockOptionActivityAndAdditionalDetailsDetails" roleURI="http://flotekind.com/role/CommonStockStockOptionActivityAndAdditionalDetailsDetails">
        <link:definition>2418404 - Disclosure - Common Stock (Stock Option Activity and Additional Details) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommonStockTables" roleURI="http://flotekind.com/role/CommonStockTables">
        <link:definition>2318301 - Disclosure - Common Stock (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://flotekind.com/role/ConsolidatedBalanceSheets">
        <link:definition>1001000 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://flotekind.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>1001501 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfCashFlows" roleURI="http://flotekind.com/role/ConsolidatedStatementsOfCashFlows">
        <link:definition>1006000 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfComprehensiveIncome" roleURI="http://flotekind.com/role/ConsolidatedStatementsOfComprehensiveIncome">
        <link:definition>1004000 - Statement - Consolidated Statements of Comprehensive Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfEquity" roleURI="http://flotekind.com/role/ConsolidatedStatementsOfEquity">
        <link:definition>1005000 - Statement - Consolidated Statements of Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsOfOperations" roleURI="http://flotekind.com/role/ConsolidatedStatementsOfOperations">
        <link:definition>1002000 - Statement - Consolidated Statements of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperations" roleURI="http://flotekind.com/role/DiscontinuedOperations">
        <link:definition>2103100 - Disclosure - Discontinued Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/DiscontinuedOperationsAdditionalDisclosuresDetails">
        <link:definition>2403402 - Disclosure - Discontinued Operations (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsSummaryOfFinancialInformationThatHasBeenSegregatedFromContinuingOperationsDetails" roleURI="http://flotekind.com/role/DiscontinuedOperationsSummaryOfFinancialInformationThatHasBeenSegregatedFromContinuingOperationsDetails">
        <link:definition>2403403 - Disclosure - Discontinued Operations (Summary Of Financial Information That Has Been Segregated From Continuing Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsTables" roleURI="http://flotekind.com/role/DiscontinuedOperationsTables">
        <link:definition>2303301 - Disclosure - Discontinued Operations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DocumentAndEntityInformation" roleURI="http://flotekind.com/role/DocumentAndEntityInformation">
        <link:definition>0001000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShare" roleURI="http://flotekind.com/role/EarningsLossPerShare">
        <link:definition>2115100 - Disclosure - Earnings (Loss) Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShareBasicAndDilutedEarningsLossPerCommonShareDetails" roleURI="http://flotekind.com/role/EarningsLossPerShareBasicAndDilutedEarningsLossPerCommonShareDetails">
        <link:definition>2415402 - Disclosure - Earnings (Loss) Per Share (Basic and Diluted Earnings (Loss) Per Common Share) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="EarningsLossPerShareTables" roleURI="http://flotekind.com/role/EarningsLossPerShareTables">
        <link:definition>2315301 - Disclosure - Earnings (Loss) Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://flotekind.com/role/FairValueMeasurements">
        <link:definition>2114100 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/FairValueMeasurementsAdditionalDisclosuresDetails">
        <link:definition>2414402 - Disclosure - Fair Value Measurements (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsFairValueOfOtherFinancialInstrumentsDetails" roleURI="http://flotekind.com/role/FairValueMeasurementsFairValueOfOtherFinancialInstrumentsDetails">
        <link:definition>2414403 - Disclosure - Fair Value Measurements (Fair Value of Other Financial Instruments) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://flotekind.com/role/FairValueMeasurementsTables">
        <link:definition>2314301 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Goodwill" roleURI="http://flotekind.com/role/Goodwill">
        <link:definition>2110100 - Disclosure - Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/GoodwillAdditionalDisclosuresDetails">
        <link:definition>2410402 - Disclosure - Goodwill (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillChangesInCarryingValueOfGoodwillDetails" roleURI="http://flotekind.com/role/GoodwillChangesInCarryingValueOfGoodwillDetails">
        <link:definition>2410403 - Disclosure - Goodwill (Changes in the Carrying Value of Goodwill) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GoodwillTables" roleURI="http://flotekind.com/role/GoodwillTables">
        <link:definition>2310301 - Disclosure - Goodwill (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperations" roleURI="http://flotekind.com/role/ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperations">
        <link:definition>2104100 - Disclosure - Impairment of Inventory and Long-Lived Assets for Discontinued Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperationsAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperationsAdditionalDisclosuresDetails">
        <link:definition>2404402 - Disclosure - Impairment of Inventory and Long-Lived Assets for Discontinued Operations (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperationsDetails" roleURI="http://flotekind.com/role/ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperationsDetails">
        <link:definition>2404403 - Disclosure - Impairment of Inventory and Long-Lived Assets for Discontinued Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperationsTables" roleURI="http://flotekind.com/role/ImpairmentOfInventoryAndLongLivedAssetsForDiscontinuedOperationsTables">
        <link:definition>2304301 - Disclosure - Impairment of Inventory and Long-Lived Assets for Discontinued Operations (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://flotekind.com/role/IncomeTaxes">
        <link:definition>2116100 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/IncomeTaxesAdditionalDisclosuresDetails">
        <link:definition>2416406 - Disclosure - Income Taxes (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails" roleURI="http://flotekind.com/role/IncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesDetails">
        <link:definition>2416405 - Disclosure - Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesComponentsOfIncomeTaxProvisionDetails" roleURI="http://flotekind.com/role/IncomeTaxesComponentsOfIncomeTaxProvisionDetails">
        <link:definition>2416402 - Disclosure - Income Taxes (Components of Income Tax Provision) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDomesticAndForeignIncomeDetails" roleURI="http://flotekind.com/role/IncomeTaxesDomesticAndForeignIncomeDetails">
        <link:definition>2416403 - Disclosure - Income Taxes (Domestic and Foreign Income) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesReconciliationOfEffectiveTaxRateDetails" roleURI="http://flotekind.com/role/IncomeTaxesReconciliationOfEffectiveTaxRateDetails">
        <link:definition>2416404 - Disclosure - Income Taxes (Reconciliation of Effective Tax Rate) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://flotekind.com/role/IncomeTaxesTables">
        <link:definition>2316301 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventories" roleURI="http://flotekind.com/role/Inventories">
        <link:definition>2108100 - Disclosure - Inventories</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesScheduleOfInventoryDetails" roleURI="http://flotekind.com/role/InventoriesScheduleOfInventoryDetails">
        <link:definition>2408402 - Disclosure - Inventories (Schedule of Inventory) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesScheduleOfInventoryReserveDetails" roleURI="http://flotekind.com/role/InventoriesScheduleOfInventoryReserveDetails">
        <link:definition>2408403 - Disclosure - Inventories (Schedule of Inventory Reserve) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoriesTables" roleURI="http://flotekind.com/role/InventoriesTables">
        <link:definition>2308301 - Disclosure - Inventories (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndCreditFacility" roleURI="http://flotekind.com/role/LongTermDebtAndCreditFacility">
        <link:definition>2113100 - Disclosure - Long-Term Debt and Credit Facility</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndCreditFacilityCreditFacilityDetails" roleURI="http://flotekind.com/role/LongTermDebtAndCreditFacilityCreditFacilityDetails">
        <link:definition>2413403 - Disclosure - Long-Term Debt and Credit Facility (Credit Facility) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndCreditFacilityRevolvingCreditFacilityDetails" roleURI="http://flotekind.com/role/LongTermDebtAndCreditFacilityRevolvingCreditFacilityDetails">
        <link:definition>2413404 - Disclosure - Long-Term Debt and Credit Facility (Revolving Credit Facility) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndCreditFacilityScheduleOfLongTermDebtDetails" roleURI="http://flotekind.com/role/LongTermDebtAndCreditFacilityScheduleOfLongTermDebtDetails">
        <link:definition>2413402 - Disclosure - Long-Term Debt and Credit Facility (Schedule of Long-Term Debt) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndCreditFacilityTables" roleURI="http://flotekind.com/role/LongTermDebtAndCreditFacilityTables">
        <link:definition>2313301 - Disclosure - Long-Term Debt and Credit Facility (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtAndCreditFacilityTermLoanDetails" roleURI="http://flotekind.com/role/LongTermDebtAndCreditFacilityTermLoanDetails">
        <link:definition>2413405 - Disclosure - Long-Term Debt and Credit Facility (Term Loan) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndNatureOfOperations" roleURI="http://flotekind.com/role/OrganizationAndNatureOfOperations">
        <link:definition>2101100 - Disclosure - Organization and Nature of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OrganizationAndNatureOfOperationsDetails" roleURI="http://flotekind.com/role/OrganizationAndNatureOfOperationsDetails">
        <link:definition>2401401 - Disclosure - Organization and Nature of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIntangibleAssets" roleURI="http://flotekind.com/role/OtherIntangibleAssets">
        <link:definition>2111100 - Disclosure - Other Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIntangibleAssetsAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/OtherIntangibleAssetsAdditionalDisclosuresDetails">
        <link:definition>2411403 - Disclosure - Other Intangible Assets (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIntangibleAssetsEstimatedFutureAmortizationExpenseDetails" roleURI="http://flotekind.com/role/OtherIntangibleAssetsEstimatedFutureAmortizationExpenseDetails">
        <link:definition>2411404 - Disclosure - Other Intangible Assets (Estimated Future Amortization Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIntangibleAssetsScheduleOfIntangibleAssetsDetails" roleURI="http://flotekind.com/role/OtherIntangibleAssetsScheduleOfIntangibleAssetsDetails">
        <link:definition>2411402 - Disclosure - Other Intangible Assets (Schedule of Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherIntangibleAssetsTables" roleURI="http://flotekind.com/role/OtherIntangibleAssetsTables">
        <link:definition>2311301 - Disclosure - Other Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipment" roleURI="http://flotekind.com/role/PropertyAndEquipment">
        <link:definition>2109100 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentAdditionalDisclosuresDetails" roleURI="http://flotekind.com/role/PropertyAndEquipmentAdditionalDisclosuresDetails">
        <link:definition>2409403 - Disclosure - Property and Equipment (Additional Disclosures) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentComponentsOfPropertyPlantAndEquipmentDetails" roleURI="http://flotekind.com/role/PropertyAndEquipmentComponentsOfPropertyPlantAndEquipmentDetails">
        <link:definition>2409402 - Disclosure - Property and Equipment (Components of Property, Plant and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyAndEquipmentTables" roleURI="http://flotekind.com/role/PropertyAndEquipmentTables">
        <link:definition>2309301 - Disclosure - Property and Equipment (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialDataUnaudited" roleURI="http://flotekind.com/role/QuarterlyFinancialDataUnaudited">
        <link:definition>2121100 - Disclosure - Quarterly Financial Data (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialDataUnauditedDetails" roleURI="http://flotekind.com/role/QuarterlyFinancialDataUnauditedDetails">
        <link:definition>2421402 - Disclosure - Quarterly Financial Data (Unaudited) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="QuarterlyFinancialDataUnauditedTables" roleURI="http://flotekind.com/role/QuarterlyFinancialDataUnauditedTables">
        <link:definition>2321301 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://flotekind.com/role/Revenue">
        <link:definition>2107100 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDetails" roleURI="http://flotekind.com/role/RevenueDetails">
        <link:definition>2407402 - Disclosure - Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://flotekind.com/role/RevenueTables">
        <link:definition>2307301 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPolicies" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPolicies">
        <link:definition>2102100 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesAllowanceForDoubtfulAccountsDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesAllowanceForDoubtfulAccountsDetails">
        <link:definition>2402404 - Disclosure - Summary of Significant Accounting Policies (Allowance for Doubtful Accounts) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesBasisOfPresentationDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesBasisOfPresentationDetails">
        <link:definition>2402403 - Disclosure - Summary of Significant Accounting Policies (Basis of Presentation) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesDiscontinuedOperationsDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesDiscontinuedOperationsDetails">
        <link:definition>2402408 - Disclosure - Summary of Significant Accounting Policies (Discontinued Operations) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails">
        <link:definition>2402407 - Disclosure - Summary of Significant Accounting Policies (Income Taxes) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesNewAccountingPronouncementsDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesNewAccountingPronouncementsDetails">
        <link:definition>2402409 - Disclosure - Summary of Significant Accounting Policies (New Accounting Pronouncements) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesOtherIntangibleAssetsDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesOtherIntangibleAssetsDetails">
        <link:definition>2402406 - Disclosure - Summary of Significant Accounting Policies (Other Intangible Assets) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPolicies" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails">
        <link:definition>2402405 - Disclosure - Summary of Significant Accounting Policies (Property and Equipment) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryOfSignificantAccountingPoliciesTables" roleURI="http://flotekind.com/role/SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>2302302 - Disclosure - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalCashFlowInformation" roleURI="http://flotekind.com/role/SupplementalCashFlowInformation">
        <link:definition>2106100 - Disclosure - Supplemental Cash Flow Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalCashFlowInformationDetails" roleURI="http://flotekind.com/role/SupplementalCashFlowInformationDetails">
        <link:definition>2406402 - Disclosure - Supplemental Cash Flow Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SupplementalCashFlowInformationTables" roleURI="http://flotekind.com/role/SupplementalCashFlowInformationTables">
        <link:definition>2306301 - Disclosure - Supplemental Cash Flow Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element abstract="true" id="ftk_AcquiredIntangibleAssetsMember" name="AcquiredIntangibleAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ArtificialLiftMember" name="ArtificialLiftMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_AwardDate1Member" name="AwardDate1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_AwardDate2Member" name="AwardDate2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_BuildingsAndLeaseholdImprovementsMember" name="BuildingsAndLeaseholdImprovementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_BusinessAcquisitionPercentofAssetsAcquired" name="BusinessAcquisitionPercentofAssetsAcquired" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ftk_ChemicalsMember" name="ChemicalsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ComputerEquipmentandSoftwareMember" name="ComputerEquipmentandSoftwareMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ConsumerandIndustrialChemicalTechnologiesMember" name="ConsumerandIndustrialChemicalTechnologiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_CovenantMaximumNumberofDaysFromYearEndByWhichPrepaymentof25ofAdjustedEBTDAisDue" name="CovenantMaximumNumberofDaysFromYearEndByWhichPrepaymentof25ofAdjustedEBTDAisDue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_CovenantPercentofAdjustedEBITDAWhichMustBePrepaid" name="CovenantPercentofAdjustedEBITDAWhichMustBePrepaid" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_CreditFacilityCeilingValueApplicableto25OfAdjustedEBITDAWhichMustBePaid" name="CreditFacilityCeilingValueApplicableto25OfAdjustedEBITDAWhichMustBePaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_CustomerBMember" name="CustomerBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_CustomerCMember" name="CustomerCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_CustomerMember" name="CustomerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DebtCovenantPeriodAxis" name="DebtCovenantPeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DebtCovenantPeriodDomain" name="DebtCovenantPeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DebtCovenantPeriodOneMember" name="DebtCovenantPeriodOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DebtCovenantPeriodTwoMember" name="DebtCovenantPeriodTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_DebtInstrumentBasisSpreadOnVariableRateBaseRate" name="DebtInstrumentBasisSpreadOnVariableRateBaseRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="ftk_DebtInstrumentCovenantCoverageChargeRatio" name="DebtInstrumentCovenantCoverageChargeRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_DebtInstrumentCovenantLeverageRatio" name="DebtInstrumentCovenantLeverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_DebtInstrumentCovenantShareRepurchaseMaximumAmount" name="DebtInstrumentCovenantShareRepurchaseMaximumAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ftk_DebtInstrumentCovenantUndrawnAvailabilityAffectsFixedCoverageChargeRatioandAnnualCapitalExpenditures" name="DebtInstrumentCovenantUndrawnAvailabilityAffectsFixedCoverageChargeRatioandAnnualCapitalExpenditures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DeferredFinancingCostsMember" name="DeferredFinancingCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DefinedContributionPlanMatchingContributionsAxis" name="DefinedContributionPlanMatchingContributionsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DefinedContributionPlanMatchingContributionsDomain" name="DefinedContributionPlanMatchingContributionsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DefinedContributionPlanMatchingRangefrom4to8PercentMember" name="DefinedContributionPlanMatchingRangefrom4to8PercentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DefinedContributionPlanMatchingRangeupto2PercentMember" name="DefinedContributionPlanMatchingRangeupto2PercentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DerivativeLawsuitAgainstOfficersandDirectorsMember" name="DerivativeLawsuitAgainstOfficersandDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DerivativeLawsuitFiledinDistrictCourtofHarrisCountyTexasMember" name="DerivativeLawsuitFiledinDistrictCourtofHarrisCountyTexasMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationAccountsNotesandLoansReceivableNoncurrent" name="DisposalGroupIncludingDiscontinuedOperationAccountsNotesandLoansReceivableNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationAssetsNetofValuationAllowance" name="DisposalGroupIncludingDiscontinuedOperationAssetsNetofValuationAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationAssetsValuationAllowance" name="DisposalGroupIncludingDiscontinuedOperationAssetsValuationAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationAssumedByContinuingOperationsAccountsReceivableCurrent" name="DisposalGroupIncludingDiscontinuedOperationAssumedByContinuingOperationsAccountsReceivableCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationAssumedByContinuingOperationsAccruedLiabilitiesCurrent" name="DisposalGroupIncludingDiscontinuedOperationAssumedByContinuingOperationsAccruedLiabilitiesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationAssumedByContinuingOperationsSalesPriceHoldback" name="DisposalGroupIncludingDiscontinuedOperationAssumedByContinuingOperationsSalesPriceHoldback" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationEscrowDepositTerm" name="DisposalGroupIncludingDiscontinuedOperationEscrowDepositTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationGainLossonDisposalofLongLivedAssets" name="DisposalGroupIncludingDiscontinuedOperationGainLossonDisposalofLongLivedAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationImpairmentofInventoryandLongLivedAssets" name="DisposalGroupIncludingDiscontinuedOperationImpairmentofInventoryandLongLivedAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationNotesReceivableConsideration" name="DisposalGroupIncludingDiscontinuedOperationNotesReceivableConsideration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense" name="DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ftk_DisposalGroupIncludingDiscontinuedOperationResearchandDevelopment" name="DisposalGroupIncludingDiscontinuedOperationResearchandDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DrillingMember" name="DrillingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_DrillingTechnologiesAndProductionTechnologiesMember" name="DrillingTechnologiesAndProductionTechnologiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_EffectiveIncomeTaxRateReconciliationNetOperatingLossAdjustment" name="EffectiveIncomeTaxRateReconciliationNetOperatingLossAdjustment" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount" name="EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ftk_EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitPercent" name="EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxBenefitPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent" name="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_EmployeeStockPurchasePlanEsppSharesPurchasedTotalFairValue" name="EmployeeStockPurchasePlanEsppSharesPurchasedTotalFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_GatesCapitalManagementIncMember" name="GatesCapitalManagementIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_IncreaseDecreaseinNumberofDrillingRigsPercent" name="IncreaseDecreaseinNumberofDrillingRigsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="ftk_IncreaseDecreaseinOilPricesPercent" name="IncreaseDecreaseinOilPricesPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_InternationalArtificialLiftLLCMember" name="InternationalArtificialLiftLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_InternationalPolymericsIncMember" name="InternationalPolymericsIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_LineOfCreditFacilityCovenantComplianceCapitalExpenditures" name="LineOfCreditFacilityCovenantComplianceCapitalExpenditures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_MajorCustomersMember" name="MajorCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_NationalOilwellVarcoL.P.Member" name="NationalOilwellVarcoL.P.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_NumberOfFederalIncomeTaxReturnFilingGroups" name="NumberOfFederalIncomeTaxReturnFilingGroups" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_NumberOfSegmentsWithAssetsAndLiabilitiesClassifiedAsDiscontinuedOperations" name="NumberOfSegmentsWithAssetsAndLiabilitiesClassifiedAsDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_NumberofDrillingRigs" name="NumberofDrillingRigs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="ftk_NumberofSegmentsTestedforGoodwillImpairment" name="NumberofSegmentsTestedforGoodwillImpairment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_Plan3Member" name="Plan3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_Plan4Member" name="Plan4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_Plan5Member" name="Plan5Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_PreferredStockMinimumNumberofSeriesAuthorized" name="PreferredStockMinimumNumberofSeriesAuthorized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ProductionTechnologiesMember" name="ProductionTechnologiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_PunitiveLawsuitsFiledintheUnitedStatesDistrictCourtfortheSouthernDistrictofTexasMember" name="PunitiveLawsuitsFiledintheUnitedStatesDistrictCourtfortheSouthernDistrictofTexasMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_RestatedRevolvingCreditTermLoanandSecurityAgreementMember" name="RestatedRevolvingCreditTermLoanandSecurityAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_RestrictedStockPerformancebasedMember" name="RestrictedStockPerformancebasedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_RestrictedStockTimeVestingMember" name="RestrictedStockTimeVestingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_RevenueAbstract" name="RevenueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_RevenuesandCostofRevenuesbyProductRentalorServiceSourceTextBlock" name="RevenuesandCostofRevenuesbyProductRentalorServiceSourceTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_ScheduleOfInventoryValuationReserveChangesTableTextBlock" name="ScheduleOfInventoryValuationReserveChangesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_ScheduleofAssetImpairmentChargesTableTextBlock" name="ScheduleofAssetImpairmentChargesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ScheduleofFiniteandIndefiniteLivedIntangibleAssetsLineItems" name="ScheduleofFiniteandIndefiniteLivedIntangibleAssetsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ScheduleofFiniteandIndefiniteLivedIntangibleAssetsTable" name="ScheduleofFiniteandIndefiniteLivedIntangibleAssetsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPriorYearShareEquivalentsNotEarnedWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPriorYearShareEquivalentsNotEarnedWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodPercentByAwardType" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantsInPeriodPercentByAwardType" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeePurchasePowerDuringOfferingPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeePurchasePowerDuringOfferingPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOfferingPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOfferingPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ShareRepurchaseProgramJune2015Member" name="ShareRepurchaseProgramJune2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ftk_ShareRepurchaseProgramNovember2012Member" name="ShareRepurchaseProgramNovember2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToConvertAndVestInNextFiscalYear" name="SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedToConvertAndVestInNextFiscalYear" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsPriorYearShareEquivalentsNotEarnedInPeriod" name="SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsPriorYearShareEquivalentsNotEarnedInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_SharebasedGoodsandNonemployeeServicesTransactionGrantsinPeriod" name="SharebasedGoodsandNonemployeeServicesTransactionGrantsinPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_SharebasedGoodsandNonemployeeServicesTransactionWeightedAverageGrantDateFairValue" name="SharebasedGoodsandNonemployeeServicesTransactionWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_StockIssuedDuringPeriodSharesPaymentofAccruedLiability" name="StockIssuedDuringPeriodSharesPaymentofAccruedLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_StockIssuedDuringPeriodValuePaymentofAccruedLiability" name="StockIssuedDuringPeriodValuePaymentofAccruedLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ftk_StockOptionsExercised" name="StockOptionsExercised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_StockSurrenderedDuringPeriodShares" name="StockSurrenderedDuringPeriodShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="ftk_StockSurrenderedDuringPeriodValue" name="StockSurrenderedDuringPeriodValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense" name="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_TaxCutsAndJobsActOf2017IncompleteAccountingDeductibleExecutiveCompensationProvisionalIncomeTaxExpense" name="TaxCutsAndJobsActOf2017IncompleteAccountingDeductibleExecutiveCompensationProvisionalIncomeTaxExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit" name="TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense" name="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ftk_UsefulLivesofPropertyPlantandEquipmentTableTextBlock" name="UsefulLivesofPropertyPlantandEquipmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
</xsd:schema>
