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    <link:label id="lab_klxe_CompletionRevenuesMember_64E4EA90E438DA13B91345390B66A2F7_terseLabel_en-US" xlink:label="lab_klxe_CompletionRevenuesMember_64E4EA90E438DA13B91345390B66A2F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Completion revenues</link:label>
    <link:label id="lab_klxe_CompletionRevenuesMember_64E4EA90E438DA13B91345390B66A2F7_label_en-US" xlink:label="lab_klxe_CompletionRevenuesMember_64E4EA90E438DA13B91345390B66A2F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Completion Revenues [Member]</link:label>
    <link:label id="lab_klxe_CompletionRevenuesMember_64E4EA90E438DA13B91345390B66A2F7_documentation_en-US" xlink:label="lab_klxe_CompletionRevenuesMember_64E4EA90E438DA13B91345390B66A2F7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to completion revenues.</link:label>
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    <link:label id="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F_terseLabel_en-US" xlink:label="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Production revenues</link:label>
    <link:label id="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F_label_en-US" xlink:label="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Production Revenues [Member]</link:label>
    <link:label id="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F_documentation_en-US" xlink:label="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to production revenues.</link:label>
    <link:loc xlink:href="klxe-20200731.xsd#klxe_ProductionRevenuesMember" xlink:label="loc_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F" xlink:to="lab_klxe_ProductionRevenuesMember_FD90310781F7CBA54EAB45390B67065F" xlink:type="arc" />
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    <link:label id="lab_klxe_InterventionRevenuesMember_CB17497EB4A40319998F45390B673D18_documentation_en-US" xlink:label="lab_klxe_InterventionRevenuesMember_CB17497EB4A40319998F45390B673D18" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information pertaining to intervention revenues.</link:label>
    <link:loc xlink:href="klxe-20200731.xsd#klxe_InterventionRevenuesMember" xlink:label="loc_klxe_InterventionRevenuesMember_CB17497EB4A40319998F45390B673D18" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SegmentDomain_0CED7224C8AAE0A6AAE445390B670E7C_label_en-US" xlink:label="lab_us-gaap_SegmentDomain_0CED7224C8AAE0A6AAE445390B670E7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
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    <link:label id="lab_klxe_SouthwestMember_D3C6A0C4C9B0C62300A345390B675543_label_en-US" xlink:label="lab_klxe_SouthwestMember_D3C6A0C4C9B0C62300A345390B675543" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Southwest [Member]</link:label>
    <link:label id="lab_klxe_SouthwestMember_D3C6A0C4C9B0C62300A345390B675543_documentation_en-US" xlink:label="lab_klxe_SouthwestMember_D3C6A0C4C9B0C62300A345390B675543" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information related to the Southwest segment, including the Permian Basin and Eagle Ford Shale.</link:label>
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    <link:label id="lab_klxe_RockyMountainsMember_8E77C9DA69F257B01B7645390B684922_terseLabel_en-US" xlink:label="lab_klxe_RockyMountainsMember_8E77C9DA69F257B01B7645390B684922" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rocky Mountains</link:label>
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    <link:label id="lab_klxe_RockyMountainsMember_8E77C9DA69F257B01B7645390B684922_documentation_en-US" xlink:label="lab_klxe_RockyMountainsMember_8E77C9DA69F257B01B7645390B684922" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information related to the Rocky Mountains segment, which includes the Bakken formation, Williston, DJ, Uinta and Piceance Basins and Niobrara Shale.</link:label>
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    <link:label id="lab_klxe_NortheastMember_CE7F63ABB6CD107DA6AC45390B6850D8_verboseLabel_en-US" xlink:label="lab_klxe_NortheastMember_CE7F63ABB6CD107DA6AC45390B6850D8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Northeast /Mid-Con</link:label>
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    <link:label id="lab_klxe_NortheastMember_CE7F63ABB6CD107DA6AC45390B6850D8_documentation_en-US" xlink:label="lab_klxe_NortheastMember_CE7F63ABB6CD107DA6AC45390B6850D8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information related to the Northeast segment, which includes the Marcellus and Utica Shales, as well as the Mid-Continent STACK and SCOOP and Haynesville.</link:label>
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    <link:label id="lab_us-gaap_PlanNameAxis_DBCC6746E4929742CED25A9FA1B97077_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_DBCC6746E4929742CED25A9FA1B97077" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
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    <link:label id="lab_us-gaap_PlanNameDomain_75905A56ECFD7027AB3D5A9FA1B9A13A_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_75905A56ECFD7027AB3D5A9FA1B9A13A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:label id="lab_us-gaap_PlanNameDomain_75905A56ECFD7027AB3D5A9FA1B9A13A_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_75905A56ECFD7027AB3D5A9FA1B9A13A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
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    <link:label id="lab_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A_terseLabel_en-US" xlink:label="lab_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan</link:label>
    <link:label id="lab_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A_label_en-US" xlink:label="lab_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan [Member]</link:label>
    <link:label id="lab_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A_documentation_en-US" xlink:label="lab_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee Stock Purchase Plan Member.</link:label>
    <link:loc xlink:href="klxe-20200731.xsd#klxe_EmployeeStockPurchasePlanMember" xlink:label="loc_klxe_EmployeeStockPurchasePlanMember_5FCC8B5D73E8E0B9839E5A9FA1BA036A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E7FA95DD2E86E875E1325A9FA1BA6A75_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E7FA95DD2E86E875E1325A9FA1BA6A75" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E7FA95DD2E86E875E1325A9FA1BA6A75" xlink:type="locator" />
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    <link:label id="lab_klxe_AllocatedShareBasedCompensationExpenseNetOfAdjustments_DE909AA88EFECC3A12A95A9FA1BA6006_terseLabel_en-US" xlink:label="lab_klxe_AllocatedShareBasedCompensationExpenseNetOfAdjustments_DE909AA88EFECC3A12A95A9FA1BA6006" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share based compensation expense, net</link:label>
    <link:label id="lab_klxe_AllocatedShareBasedCompensationExpenseNetOfAdjustments_DE909AA88EFECC3A12A95A9FA1BA6006_label_en-US" xlink:label="lab_klxe_AllocatedShareBasedCompensationExpenseNetOfAdjustments_DE909AA88EFECC3A12A95A9FA1BA6006" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allocated Share-Based Compensation Expense, Net of Adjustments</link:label>
    <link:label id="lab_klxe_AllocatedShareBasedCompensationExpenseNetOfAdjustments_DE909AA88EFECC3A12A95A9FA1BA6006_documentation_en-US" xlink:label="lab_klxe_AllocatedShareBasedCompensationExpenseNetOfAdjustments_DE909AA88EFECC3A12A95A9FA1BA6006" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the expense recognized during the period arising from equity-based compensation arrangements, net of adjustments.</link:label>
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    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_38645C98F1EA19D8D4BD5A9FA1BAE144_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_38645C98F1EA19D8D4BD5A9FA1BAE144" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized compensation cost</link:label>
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    <link:label id="lab_klxe_ShareBasedCompensationArrangementByShareBasedPaymentAwardAssumedCompensationAgreementNumberOfSharesOutstanding_97D255995C1DF7D34A325AA4AE4A7C16_terseLabel_en-US" xlink:label="lab_klxe_ShareBasedCompensationArrangementByShareBasedPaymentAwardAssumedCompensationAgreementNumberOfSharesOutstanding_97D255995C1DF7D34A325AA4AE4A7C16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assumed compensation agreement, number of shares outstanding (in shares)</link:label>
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