<?xml version="1.0" encoding="US-ASCII"?>
<!-- DFIN New ActiveDisclosure (SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date :2026-06-02T17:13:35.7552+00:00 -->
<!-- Copyright (c) 2026 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema targetNamespace="http://www.obsidianenergy.com/20251231" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:obe="http://www.obsidianenergy.com/20251231" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:rxp="http://xbrl.sec.gov/rxp/2025" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:enum="http://xbrl.org/2014/extensible-enumerations" xmlns:xlink="http://www.w3.org/1999/xlink">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance"/>
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase"/>
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt"/>
  <xsd:import schemaLocation="http://www.xbrl.org/2014/extensible-enumerations.xsd" namespace="http://xbrl.org/2014/extensible-enumerations"/>
  <xsd:import schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" namespace="http://www.xbrl.org/dtr/type/2024-01-31"/>
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" namespace="http://xbrl.sec.gov/country/2025"/>
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" namespace="http://xbrl.sec.gov/dei/2025"/>
  <xsd:import schemaLocation="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd" namespace="http://xbrl.sec.gov/rxp/2025"/>
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbase id="lnk">
        <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple"/>
        <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple"/>
        <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple"/>
        <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple"/>
        <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple"/>
        <link:arcroleRef arcroleURI="http://www.esma.europa.eu/xbrl/esef/arcrole/wider-narrower" xlink:href="http://www.xbrl.org/lrr/arcrole/esma-arcrole-2018-11-21.xsd#wider-narrower" xlink:type="simple"/>
        <link:roleRef roleURI="http://xbrl.sec.gov/rxp/role/GovernmentsOnly" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#GovernmentsOnly" xlink:type="simple"/>
        <link:roleRef roleURI="http://xbrl.sec.gov/rxp/role/ProjectsOnly" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ProjectsOnly" xlink:type="simple"/>
        <link:roleRef roleURI="http://xbrl.sec.gov/rxp/role/ByGovernment" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ByGovernment" xlink:type="simple"/>
        <link:roleRef roleURI="http://xbrl.sec.gov/rxp/role/ByProject" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#ByProject" xlink:type="simple"/>
        <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:title="labelLink" xlink:type="extended">
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_SUCKERCREEKFIRSTNATIONMember" xlink:label="obe_SUCKERCREEKFIRSTNATIONMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_VikingProjectMember" xlink:label="obe_VikingProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_METISSETTLEMENTSGENERALCOUNCILMember" xlink:label="obe_METISSETTLEMENTSGENERALCOUNCILMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_GIFTLAKEMETISSETTLEMENTMember" xlink:label="obe_GIFTLAKEMETISSETTLEMENTMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_PeaceRiverProjectMember" xlink:label="obe_PeaceRiverProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_CardiumProjectMember" xlink:label="obe_CardiumProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_ParklandCountyMember" xlink:label="obe_ParklandCountyMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_WOODLANDCREEFIRSTNATIONMember" xlink:label="obe_WOODLANDCREEFIRSTNATIONMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_OcHIESEFIRSTNATIONMember" xlink:label="obe_OcHIESEFIRSTNATIONMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_PEAVINEMETISSETTLEMENTMember" xlink:label="obe_PEAVINEMETISSETTLEMENTMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_ClearwaterCountyMember" xlink:label="obe_ClearwaterCountyMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_NorthernSunriseCountyMember" xlink:label="obe_NorthernSunriseCountyMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_ProvinceOfAlbertaMember" xlink:label="obe_ProvinceOfAlbertaMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_YellowheadCountyMember" xlink:label="obe_YellowheadCountyMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_CA" xlink:label="country_CA"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_LUBICONLAKEBANDMember" xlink:label="obe_LUBICONLAKEBANDMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_BrazeauCountyMember" xlink:label="obe_BrazeauCountyMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_DuncansFirstNationMember" xlink:label="obe_DuncansFirstNationMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_SpecialAreasBoardMember" xlink:label="obe_SpecialAreasBoardMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_PaulFirstNationIndustryRelationsMember" xlink:label="obe_PaulFirstNationIndustryRelationsMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_CountyOfWetaskiwinNo10Member" xlink:label="obe_CountyOfWetaskiwinNo10Member"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_LegacyProjectMember" xlink:label="obe_LegacyProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_BigLakesCountyMember" xlink:label="obe_BigLakesCountyMember"/>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_SUCKERCREEKFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SUCKER CREEK FIRST NATION [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_SUCKERCREEKFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sucker Creek First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_SUCKERCREEKFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sucker Creek First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_VikingProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Viking Project [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_VikingProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Viking Project.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_VikingProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Viking</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_METISSETTLEMENTSGENERALCOUNCILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">METIS SETTLEMENTS GENERAL COUNCIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_METISSETTLEMENTSGENERALCOUNCILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Metis Settlements General Council</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_METISSETTLEMENTSGENERALCOUNCILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Metis Settlements General Council</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_GIFTLAKEMETISSETTLEMENTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">GIFT LAKE METIS SETTLEMENT [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_GIFTLAKEMETISSETTLEMENTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">GIFT LAKE METIS SETTLEMENT</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_GIFTLAKEMETISSETTLEMENTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gift Lake Metis Settlement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PeaceRiverProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Peace River Project [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PeaceRiverProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Peace River Project.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PeaceRiverProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Peace River</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_CardiumProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cardium Project [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_CardiumProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cardium Project.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_CardiumProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cardium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ParklandCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Parkland County [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ParklandCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Parkland County.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ParklandCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Parkland County</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_WOODLANDCREEFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">WOODLAND CREE FIRST NATION [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_WOODLANDCREEFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Woodland Cree First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_WOODLANDCREEFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Woodland Cree First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_OcHIESEFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">O'CHIESE FIRST NATION [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_OcHIESEFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">O'chiese First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_OcHIESEFIRSTNATIONMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">O'chiese First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PEAVINEMETISSETTLEMENTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PEAVINE METIS SETTLEMENT [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PEAVINEMETISSETTLEMENTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Peavine Metis Settlement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PEAVINEMETISSETTLEMENTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Peavine Metis Settlement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ClearwaterCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Clearwater County [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ClearwaterCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Clearwater County.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ClearwaterCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Clearwater County</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_NorthernSunriseCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Northern Sunrise County [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_NorthernSunriseCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Northern Sunrise County.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_NorthernSunriseCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Northern Sunrise County</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ProvinceOfAlbertaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Province of Alberta [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ProvinceOfAlbertaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Province of Alberta.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_ProvinceOfAlbertaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Province of Alberta</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_YellowheadCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Yellowhead County [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_YellowheadCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Yellowhead County.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_YellowheadCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Yellowhead County</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CANADA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_LUBICONLAKEBANDMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">453 LUBICON LAKE BAND [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_LUBICONLAKEBANDMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">453 Lubicon Lake Band</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_LUBICONLAKEBANDMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">453 Lubicon Lake Band</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_BrazeauCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Brazeau County [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_BrazeauCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Brazeau County.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_BrazeauCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Brazeau County</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_DuncansFirstNationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Duncan's First Nation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_DuncansFirstNationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Duncan's First Nation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_DuncansFirstNationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Duncan's First Nation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_SpecialAreasBoardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Special Areas Board [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_SpecialAreasBoardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Special Areas Board.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_SpecialAreasBoardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Special Areas Board</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PaulFirstNationIndustryRelationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paul First Nation Industry Relations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PaulFirstNationIndustryRelationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paul First Nation Industry Relations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_PaulFirstNationIndustryRelationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Paul First Nation Industry Relations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_CountyOfWetaskiwinNo10Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">County of Wetaskiwin No 10 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_CountyOfWetaskiwinNo10Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">County of Wetaskiwin No 10.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_CountyOfWetaskiwinNo10Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">County of Wetaskiwin No 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_LegacyProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legacy Project [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_LegacyProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Legacy Project.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_LegacyProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legacy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_BigLakesCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Big Lakes County [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_BigLakesCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Big Lakes County.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="obe_BigLakesCountyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Big Lakes County</link:label>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="obe_SUCKERCREEKFIRSTNATIONMember" xlink:to="obe_SUCKERCREEKFIRSTNATIONMember_lbl"/>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="obe_VikingProjectMember" xlink:to="obe_VikingProjectMember_lbl"/>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="obe_METISSETTLEMENTSGENERALCOUNCILMember" xlink:to="obe_METISSETTLEMENTSGENERALCOUNCILMember_lbl"/>
          <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="obe_GIFTLAKEMETISSETTLEMENTMember" xlink:to="obe_GIFTLAKEMETISSETTLEMENTMember_lbl"/>
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          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_CardiumProjectMember" xlink:label="obe_CardiumProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_LegacyProjectMember" xlink:label="obe_LegacyProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_PeaceRiverProjectMember" xlink:label="obe_PeaceRiverProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="obe_ex201-20251231.xsd#obe_VikingProjectMember" xlink:label="obe_VikingProjectMember"/>
          <link:definitionArc xlink:type="arc" order="0" xbrldt:closed="false" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="rxp_AllProjectsMember" xlink:to="obe_CardiumProjectMember" priority="2" use="optional"/>
          <link:definitionArc xlink:type="arc" order="1" xbrldt:closed="false" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="rxp_AllProjectsMember" xlink:to="obe_LegacyProjectMember" priority="2" use="optional"/>
          <link:definitionArc xlink:type="arc" order="2" xbrldt:closed="false" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="rxp_AllProjectsMember" xlink:to="obe_PeaceRiverProjectMember" priority="2" use="optional"/>
          <link:definitionArc xlink:type="arc" order="3" xbrldt:closed="false" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="rxp_AllProjectsMember" xlink:to="obe_VikingProjectMember" priority="2" use="optional"/>
        </link:definitionLink>
      </link:linkbase>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="obe_LegacyProjectMember" name="LegacyProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_METISSETTLEMENTSGENERALCOUNCILMember" name="METISSETTLEMENTSGENERALCOUNCILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_OcHIESEFIRSTNATIONMember" name="OcHIESEFIRSTNATIONMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_LUBICONLAKEBANDMember" name="LUBICONLAKEBANDMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_ClearwaterCountyMember" name="ClearwaterCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_SpecialAreasBoardMember" name="SpecialAreasBoardMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_BrazeauCountyMember" name="BrazeauCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_SUCKERCREEKFIRSTNATIONMember" name="SUCKERCREEKFIRSTNATIONMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_NorthernSunriseCountyMember" name="NorthernSunriseCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_WOODLANDCREEFIRSTNATIONMember" name="WOODLANDCREEFIRSTNATIONMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_BigLakesCountyMember" name="BigLakesCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_ProvinceOfAlbertaMember" name="ProvinceOfAlbertaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_DuncansFirstNationMember" name="DuncansFirstNationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_ParklandCountyMember" name="ParklandCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_VikingProjectMember" name="VikingProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_CardiumProjectMember" name="CardiumProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_GIFTLAKEMETISSETTLEMENTMember" name="GIFTLAKEMETISSETTLEMENTMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_PaulFirstNationIndustryRelationsMember" name="PaulFirstNationIndustryRelationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_YellowheadCountyMember" name="YellowheadCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_PEAVINEMETISSETTLEMENTMember" name="PEAVINEMETISSETTLEMENTMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_CountyOfWetaskiwinNo10Member" name="CountyOfWetaskiwinNo10Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="obe_PeaceRiverProjectMember" name="PeaceRiverProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
