<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.2.0.5 -->
<!--Based on XBRL 2.1-->
<!--Created on: 3/27/2026 1:44:40 PM-->
<!--Modified on: 3/27/2026 1:44:40 PM-->
<xsd:schema targetNamespace="http://www.epsilonenergyltd.com/20251231" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:epsn="http://www.epsilonenergyltd.com/20251231" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:deprecated="http://www.xbrl.org/2009/role/deprecated" xmlns:dtr="http://www.xbrl.org/2009/dtr" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:us-gaap="http://fasb.org/us-gaap/2025" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:stpr="http://xbrl.sec.gov/stpr/2025" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:country="http://xbrl.sec.gov/country/2025" xmlns:enum2="http://xbrl.org/2020/extensible-enumerations-2.0" xmlns:us-roles="http://fasb.org/us-roles/2025" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:srt="http://fasb.org/srt/2025" xmlns:attributeFormDefault="unqualified" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ecd="http://xbrl.sec.gov/ecd/2025" xmlns:ecd-sub="http://xbrl.sec.gov/ecd-sub/2025" xmlns:cyd-af-sub="http://xbrl.sec.gov/cyd-af-sub/2025" xmlns:cyd="http://xbrl.sec.gov/cyd/2025">
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/StatementConsolidatedBalanceSheets" id="StatementConsolidatedBalanceSheets">
        <link:definition>995200100 - 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 roleURI="http://www.epsilonenergyltd.com/role/StatementConsolidatedStatementsOfOperationsAndComprehensiveIncome" id="StatementConsolidatedStatementsOfOperationsAndComprehensiveIncome">
        <link:definition>995200200 - Statement - Consolidated Statements of Operations and 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 roleURI="http://www.epsilonenergyltd.com/role/StatementConsolidatedStatementsOfCashFlows" id="StatementConsolidatedStatementsOfCashFlows">
        <link:definition>995200400 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureSummaryOfSignificantAccountingPoliciesCashCashEquivalentsAndRestrictedCashDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesCashCashEquivalentsAndRestrictedCashDetails">
        <link:definition>99940301 - Disclosure - Summary of Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureBusinessCombinationPreliminaryPurchasePriceAllocationDetails" id="DisclosureBusinessCombinationPreliminaryPurchasePriceAllocationDetails">
        <link:definition>99940402 - Disclosure - Business Combination - Preliminary purchase price allocation (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesIncomeLossBeforeIncomeTaxesDetails" id="DisclosureIncomeTaxesIncomeLossBeforeIncomeTaxesDetails">
        <link:definition>99941001 - Disclosure - Income Taxes - Income (loss) before 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesCurrentAndDeferredTaxExpenseDetails" id="DisclosureIncomeTaxesCurrentAndDeferredTaxExpenseDetails">
        <link:definition>99941002 - Disclosure - Income Taxes - Current and Deferred Tax 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesEffectiveTaxReconciliationDetails" id="DisclosureIncomeTaxesEffectiveTaxReconciliationDetails">
        <link:definition>99941003 - Disclosure - Income Taxes - Effective tax reconciliation (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesNetDeferredTaxLiabilitiesDetails" id="DisclosureIncomeTaxesNetDeferredTaxLiabilitiesDetails">
        <link:definition>99941004 - Disclosure - Income Taxes - Net Deferred Tax 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesTotalNetIncomeTaxPaymentsRefundsDetails" id="DisclosureIncomeTaxesTotalNetIncomeTaxPaymentsRefundsDetails">
        <link:definition>99941005 - Disclosure - Income Taxes - Total net income tax payments (Refunds) (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureLeasesLeaseCommitmentDetails" id="DisclosureLeasesLeaseCommitmentDetails">
        <link:definition>99941201 - Disclosure - Leases - Lease Commitment (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureFutureMinimumLeaseCommitmentsDetailsCalc2" id="DisclosureFutureMinimumLeaseCommitmentsDetailsCalc2">
        <link:definition>41202 - Disclosure - Future Minimum Lease Commitments (Details) Calc 2</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureLeasesFutureMinimumLeaseCommitmentsDetails" id="DisclosureLeasesFutureMinimumLeaseCommitmentsDetails">
        <link:definition>99941202 - Disclosure - Leases - Future Minimum Lease Commitments (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommodityRiskManagementActivitiesFairValueOfDerivativesDetails" id="DisclosureCommodityRiskManagementActivitiesFairValueOfDerivativesDetails">
        <link:definition>99941504 - Disclosure - Commodity Risk Management Activities - Fair value of derivatives (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 roleURI="http://www.epsilonenergyltd.com/role/DocumentDocumentAndEntityInformation" id="DocumentDocumentAndEntityInformation">
        <link:definition>995200090 - 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 roleURI="http://www.epsilonenergyltd.com/role/StatementConsolidatedBalanceSheetsParenthetical" id="StatementConsolidatedBalanceSheetsParenthetical">
        <link:definition>995200105 - 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 roleURI="http://www.epsilonenergyltd.com/role/StatementConsolidatedStatementsOfChangesInShareholdersEquity" id="StatementConsolidatedStatementsOfChangesInShareholdersEquity">
        <link:definition>995200300 - Statement - Consolidated Statements of Changes in Shareholders' 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureDescriptionOfBusiness" id="DisclosureDescriptionOfBusiness">
        <link:definition>995210101 - Disclosure - Description of Business</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureBasisOfPreparation" id="DisclosureBasisOfPreparation">
        <link:definition>995210201 - Disclosure - Basis of Preparation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureSummaryOfSignificantAccountingPolicies" id="DisclosureSummaryOfSignificantAccountingPolicies">
        <link:definition>995210301 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureBusinessCombination" id="DisclosureBusinessCombination">
        <link:definition>995210401 - Disclosure - Business Combination</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosurePropertyAndEquipment" id="DisclosurePropertyAndEquipment">
        <link:definition>995210501 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevolvingLineOfCredit" id="DisclosureRevolvingLineOfCredit">
        <link:definition>995210601 - Disclosure - Revolving Line of Credit</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquity" id="DisclosureShareholdersEquity">
        <link:definition>995210701 - Disclosure - Shareholders' 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevenueRecognition" id="DisclosureRevenueRecognition">
        <link:definition>995210801 - Disclosure - Revenue Recognition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureAccumulatedOtherComprehensiveIncome" id="DisclosureAccumulatedOtherComprehensiveIncome">
        <link:definition>995210901 - Disclosure - Accumulated Other 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxes" id="DisclosureIncomeTaxes">
        <link:definition>995211001 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommitmentsAndContingencies" id="DisclosureCommitmentsAndContingencies">
        <link:definition>995211101 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureLeases" id="DisclosureLeases">
        <link:definition>995211201 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureNetIncomePerShare" id="DisclosureNetIncomePerShare">
        <link:definition>995211301 - Disclosure - Net Income 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureOperatingSegments" id="DisclosureOperatingSegments">
        <link:definition>995211401 - Disclosure - Operating Segments</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommodityRiskManagementActivities" id="DisclosureCommodityRiskManagementActivities">
        <link:definition>995211501 - Disclosure - Commodity Risk Management Activities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureAssetRetirementObligations" id="DisclosureAssetRetirementObligations">
        <link:definition>995211601 - Disclosure - Asset Retirement Obligations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureFairValueMeasurements" id="DisclosureFairValueMeasurements">
        <link:definition>995211701 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies" id="DisclosureSummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>99920302 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables" id="DisclosureSummaryOfSignificantAccountingPoliciesTables">
        <link:definition>99930303 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureBusinessCombinationTables" id="DisclosureBusinessCombinationTables">
        <link:definition>99930403 - Disclosure - Business Combination (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosurePropertyAndEquipmentTables" id="DisclosurePropertyAndEquipmentTables">
        <link:definition>99930503 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevolvingLineOfCreditTables" id="DisclosureRevolvingLineOfCreditTables">
        <link:definition>99930603 - Disclosure - Revolving Line of Credit (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquityTables" id="DisclosureShareholdersEquityTables">
        <link:definition>99930703 - Disclosure - Shareholders' Equity (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevenueRecognitionTables" id="DisclosureRevenueRecognitionTables">
        <link:definition>99930803 - Disclosure - Revenue Recognition (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureAccumulatedOtherComprehensiveIncomeTables" id="DisclosureAccumulatedOtherComprehensiveIncomeTables">
        <link:definition>99930903 - Disclosure - Accumulated Other Comprehensive Income (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesTables" id="DisclosureIncomeTaxesTables">
        <link:definition>99931003 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureLeasesTables" id="DisclosureLeasesTables">
        <link:definition>99931203 - Disclosure - Leases (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureNetIncomePerShareTables" id="DisclosureNetIncomePerShareTables">
        <link:definition>99931303 - Disclosure - Net Income 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureOperatingSegmentsTables" id="DisclosureOperatingSegmentsTables">
        <link:definition>99931403 - Disclosure - Operating Segments (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommodityRiskManagementActivitiesTables" id="DisclosureCommodityRiskManagementActivitiesTables">
        <link:definition>99931503 - Disclosure - Commodity Risk Management Activities (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureAssetRetirementObligationsTables" id="DisclosureAssetRetirementObligationsTables">
        <link:definition>99931603 - Disclosure - Asset Retirement Obligations (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureFairValueMeasurementsTables" id="DisclosureFairValueMeasurementsTables">
        <link:definition>99931703 - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureDescriptionOfBusinessDetails" id="DisclosureDescriptionOfBusinessDetails">
        <link:definition>99940101 - Disclosure - Description of Business (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureDescriptionOfBusinessAcquisitionDetails" id="DisclosureDescriptionOfBusinessAcquisitionDetails">
        <link:definition>99940102 - Disclosure - Description of Business - Acquisition (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails" id="DisclosureSummaryOfSignificantAccountingPoliciesAdditionalInformationDetails">
        <link:definition>99940302 - Disclosure - Summary of Significant Accounting Policies - Additional 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureBusinessCombinationDetails" id="DisclosureBusinessCombinationDetails">
        <link:definition>99940401 - Disclosure - Business Combination (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureBusinessCombinationProFormaOperatingResultsDetails" id="DisclosureBusinessCombinationProFormaOperatingResultsDetails">
        <link:definition>99940403 - Disclosure - Business Combination - Pro Forma Operating Results (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosurePropertyAndEquipmentDetails" id="DisclosurePropertyAndEquipmentDetails">
        <link:definition>99940501 - Disclosure - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosurePropertyAndEquipmentPropertyAcquisitionAndSaleDetails" id="DisclosurePropertyAndEquipmentPropertyAcquisitionAndSaleDetails">
        <link:definition>99940502 - Disclosure - Property and Equipment - Property Acquisition and Sale (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosurePropertyAndEquipmentPropertyImpairmentDetails" id="DisclosurePropertyAndEquipmentPropertyImpairmentDetails">
        <link:definition>99940503 - Disclosure - Property and Equipment - Property Impairment (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevolvingLineOfCreditDetails" id="DisclosureRevolvingLineOfCreditDetails">
        <link:definition>99940601 - Disclosure - Revolving Line of Credit (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevolvingLineOfCreditRatiosDetails" id="DisclosureRevolvingLineOfCreditRatiosDetails">
        <link:definition>99940602 - Disclosure - Revolving Line of Credit - Ratios (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquityShareCapitalDetails" id="DisclosureShareholdersEquityShareCapitalDetails">
        <link:definition>99940701 - Disclosure - Shareholders' Equity - Share Capital (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquityPurchasesOfEquitySharesDetails" id="DisclosureShareholdersEquityPurchasesOfEquitySharesDetails">
        <link:definition>99940702 - Disclosure - Shareholders' Equity - Purchases of Equity Shares (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquityEquityIncentivePlanDetails" id="DisclosureShareholdersEquityEquityIncentivePlanDetails">
        <link:definition>99940703 - Disclosure - Shareholders' Equity - Equity Incentive 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquityRestrictedStockDetails" id="DisclosureShareholdersEquityRestrictedStockDetails">
        <link:definition>99940704 - Disclosure - Shareholders' Equity - Restricted Stock (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureShareholdersEquityDividendEquivalentRightsDetails" id="DisclosureShareholdersEquityDividendEquivalentRightsDetails">
        <link:definition>99940705 - Disclosure - Shareholders' Equity - Dividend Equivalent Rights (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevenueRecognitionSummaryOfRevenueDetails" id="DisclosureRevenueRecognitionSummaryOfRevenueDetails">
        <link:definition>99940801 - Disclosure - Revenue Recognition - Summary of 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevenueRecognitionAdditionalInformationDetails" id="DisclosureRevenueRecognitionAdditionalInformationDetails">
        <link:definition>99940802 - Disclosure - Revenue Recognition - Additional 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureRevenueRecognitionAccountsReceivableDetails" id="DisclosureRevenueRecognitionAccountsReceivableDetails">
        <link:definition>99940803 - Disclosure - Revenue Recognition - Accounts receivable (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureAccumulatedOtherComprehensiveIncomeDetails" id="DisclosureAccumulatedOtherComprehensiveIncomeDetails">
        <link:definition>99940901 - Disclosure - Accumulated Other Comprehensive 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureIncomeTaxesNarrativeDetails" id="DisclosureIncomeTaxesNarrativeDetails">
        <link:definition>99941006 - Disclosure - Income Taxes - Narrative (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommitmentsAndContingenciesDetails" id="DisclosureCommitmentsAndContingenciesDetails">
        <link:definition>99941101 - Disclosure - Commitments and Contingencies (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureLeasesNarrativeDetails" id="DisclosureLeasesNarrativeDetails">
        <link:definition>99941203 - Disclosure - Leases - Narrative (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureNetIncomePerShareDetails" id="DisclosureNetIncomePerShareDetails">
        <link:definition>99941301 - Disclosure - Net Income Per 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureOperatingSegmentsSegmentsDetails" id="DisclosureOperatingSegmentsSegmentsDetails">
        <link:definition>99941401 - Disclosure - Operating Segments - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureOperatingSegmentsCustomersDetails" id="DisclosureOperatingSegmentsCustomersDetails">
        <link:definition>99941402 - Disclosure - Operating Segments - 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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommodityRiskManagementActivitiesCommodityPriceRisksDetails" id="DisclosureCommodityRiskManagementActivitiesCommodityPriceRisksDetails">
        <link:definition>99941501 - Disclosure - Commodity Risk Management Activities - Commodity Price Risks (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommodityRiskManagementActivitiesCommodityDerivativeContractsDetails" id="DisclosureCommodityRiskManagementActivitiesCommodityDerivativeContractsDetails">
        <link:definition>99941502 - Disclosure - Commodity Risk Management Activities - Commodity Derivative Contracts (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureCommodityRiskManagementActivitiesFairValueOfAssetLiabilityDetails" id="DisclosureCommodityRiskManagementActivitiesFairValueOfAssetLiabilityDetails">
        <link:definition>99941503 - Disclosure - Commodity Risk Management Activities - Fair Value of Asset (Liability) (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureAssetRetirementObligationsDetails" id="DisclosureAssetRetirementObligationsDetails">
        <link:definition>99941601 - Disclosure - Asset Retirement Obligations (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureFairValueMeasurementsDetails" id="DisclosureFairValueMeasurementsDetails">
        <link:definition>99941701 - Disclosure - Fair Value Measurements (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 roleURI="http://www.epsilonenergyltd.com/role/DisclosureFairValueMeasurementsFairValueOfImpairedAssetsDetails" id="DisclosureFairValueMeasurementsFairValueOfImpairedAssetsDetails">
        <link:definition>99941702 - Disclosure - Fair Value Measurements - Fair value of the impaired 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:linkbaseRef xlink:type="simple" xlink:href="epsn-20251231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="epsn-20251231_cal.xml" xlink:title="Calculation Links, all" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="epsn-20251231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="epsn-20251231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.epsilonenergyltd.com/role/DisclosureStandardAndCustomAxisDomainDefaults" id="DisclosureStandardAndCustomAxisDomainDefaults">
        <link:definition>99900 - Disclosure - Standard And Custom Axis Domain Defaults</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:import namespace="https://xbrl.org/2023/calculation-1.1" schemaLocation="https://www.xbrl.org/2023/calculation-1.1.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.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/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.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://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2025" schemaLocation="https://xbrl.sec.gov/stpr/2025/stpr-2025.xsd" />
  <xsd:import namespace="http://fasb.org/us-roles/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-roles-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/ecd-sub/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-sub-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/cyd/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/cyd-af-sub/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-af-sub-2025.xsd" />
  <xsd:element name="PaymentsToAcquireUnprovedOilAndGasProperty" id="epsn_PaymentsToAcquireUnprovedOilAndGasProperty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ChangeInProvedPropertiesAccruedInAccountsPayableAndAccruedLiabilities" id="epsn_ChangeInProvedPropertiesAccruedInAccountsPayableAndAccruedLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="UpstreamUsaSegmentMember" id="epsn_UpstreamUsaSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfCompaniesPartneredToOperateNaturalGasGatheringSystem" id="epsn_NumberOfCompaniesPartneredToOperateNaturalGasGatheringSystem" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConcentrationRiskNumberOfCustomers" id="epsn_ConcentrationRiskNumberOfCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetRetirementObligationNetPresentValue" id="epsn_AssetRetirementObligationNetPresentValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodWeightedAverageRemainingContractualTerms" id="epsn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodWeightedAverageRemainingContractualTerms" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CurrentRatio" id="epsn_CurrentRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LeverageRatio" id="epsn_LeverageRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetRetirementObligationAssetAdditions" id="epsn_AssetRetirementObligationAssetAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="GasGatheringSegmentMember" id="epsn_GasGatheringSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CustomerOneMember" id="epsn_CustomerOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CustomerThreeMember" id="epsn_CustomerThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromPaymentsForSettlementsOfDerivativeContractsOperatingActivities" id="epsn_ProceedsFromPaymentsForSettlementsOfDerivativeContractsOperatingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="SharesRepurchasedAsPercentageOfOutstandingCommonShares" id="epsn_SharesRepurchasedAsPercentageOfOutstandingCommonShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GasGatheringSystemPropertiesPolicyPolicyTextBlock" id="epsn_GasGatheringSystemPropertiesPolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetDevelopmentCostsCapitalizationPercentage" id="epsn_AssetDevelopmentCostsCapitalizationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustmentAmount" id="epsn_EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustmentPercent" id="epsn_EffectiveIncomeTaxRateReconciliationReturnToProvisionAdjustmentPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DeferredTaxLiabilitiesOilAndGasProperties" id="epsn_DeferredTaxLiabilitiesOilAndGasProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DeferredTaxLiabilitiesPartnership" id="epsn_DeferredTaxLiabilitiesPartnership" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PrepaidDrillingCostsNoncurrent" id="epsn_PrepaidDrillingCostsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="PaymentsToAcquireProvedOilAndGasProperty" id="epsn_PaymentsToAcquireProvedOilAndGasProperty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PropertyPlantAndEquipmentExcludingLand" id="epsn_PropertyPlantAndEquipmentExcludingLand" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="PaymentsToAcquireLandBuildingsAndOtherPropertyPlantAndEquipment" id="epsn_PaymentsToAcquireLandBuildingsAndOtherPropertyPlantAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="GasOilNglsAndCondensateMember" id="epsn_GasOilNglsAndCondensateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AuburnGasGatheringSystemMember" id="epsn_AuburnGasGatheringSystemMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GasGatheringAndCompressionMember" id="epsn_GasGatheringAndCompressionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReceivableCollectionPeriod" id="epsn_ReceivableCollectionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AccruedCapitalExpenditures" id="epsn_AccruedCapitalExpenditures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AccruedGatheringFees" id="epsn_AccruedGatheringFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="GeographicLocationsOfOperationsPolicyPolicyTextBock" id="epsn_GeographicLocationsOfOperationsPolicyPolicyTextBock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RevenueSettlementStatementPeriod" id="epsn_RevenueSettlementStatementPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NaturalGasAndOilMember" id="epsn_NaturalGasAndOilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="JointInterestBillingMember" id="epsn_JointInterestBillingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TimeBasedRestrictedSharesMember" id="epsn_TimeBasedRestrictedSharesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageMarketPriceGrantDateFairValue" id="epsn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageMarketPriceGrantDateFairValue" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AssetRetirementObligationLiabilitiesAcquiredOrDisposedOf" id="epsn_AssetRetirementObligationLiabilitiesAcquiredOrDisposedOf" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="OperatingLossCarryforwardsExpectedToExpire" id="epsn_OperatingLossCarryforwardsExpectedToExpire" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="OfficeLeaseMember" id="epsn_OfficeLeaseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NewOfficeLeaseMember" id="epsn_NewOfficeLeaseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PrepaidDrillingCosts" id="epsn_PrepaidDrillingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AssetAcquisitionOneMember" id="epsn_AssetAcquisitionOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionTwoMember" id="epsn_AssetAcquisitionTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionThreeMember" id="epsn_AssetAcquisitionThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfAssetAcquisitions" id="epsn_NumberOfAssetAcquisitions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="AssetAcquisitionPercentageOfInterestsAcquired" id="epsn_AssetAcquisitionPercentageOfInterestsAcquired" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="PercentageOfUtilizationOfBorrowingBase" id="epsn_PercentageOfUtilizationOfBorrowingBase" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PercentageOfHedgingAnticipatedProductionFromPdpReserves" id="epsn_PercentageOfHedgingAnticipatedProductionFromPdpReserves" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RollingTermForCalculationOfAnticipatedProductionFromPdpReserves" id="epsn_RollingTermForCalculationOfAnticipatedProductionFromPdpReserves" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="OperatingLeaseRightOfUseAssetCurrentAndNonCurrent" id="epsn_OperatingLeaseRightOfUseAssetCurrentAndNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="InterestMember" id="epsn_InterestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CommodityContractsMember" id="epsn_CommodityContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DeferredTaxAssetsLeaseLiabilities" id="epsn_DeferredTaxAssetsLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NormalCourseIssuerBidRepurchaseProgramMarch272023ToMarch262024Member" id="epsn_NormalCourseIssuerBidRepurchaseProgramMarch272023ToMarch262024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NormalCourseIssuerBidRepurchaseProgramMarch272024ToMarch262025Member" id="epsn_NormalCourseIssuerBidRepurchaseProgramMarch272024ToMarch262025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AssetAcquisitionFourMember" id="epsn_AssetAcquisitionFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ManagementEmployeesAndBoardOfDirectorsMember" id="epsn_ManagementEmployeesAndBoardOfDirectorsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LeaseAndRentalExpenses" id="epsn_LeaseAndRentalExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateContinuingOperationsExcludingImpactOfCanadianLossNetValuationAllowance" id="epsn_EffectiveIncomeTaxRateContinuingOperationsExcludingImpactOfCanadianLossNetValuationAllowance" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="InterSegmentRevenue" id="epsn_InterSegmentRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ExplorationTransportationAndCompressionExpenses" id="epsn_ExplorationTransportationAndCompressionExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OtherLeaseOperatingExpenses" id="epsn_OtherLeaseOperatingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IntersegmentOtherLeaseOperatingExpense" id="epsn_IntersegmentOtherLeaseOperatingExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NormalCourseIssuerBidRepurchaseProgramFebruary122025ToFebruary112026Member" id="epsn_NormalCourseIssuerBidRepurchaseProgramFebruary122025ToFebruary112026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsWeightedAverageGrantDateFairValue" id="epsn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsWeightedAverageGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValue" id="epsn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsWeightedAverageGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedWeightedAverageGrantDateFairValue" id="epsn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedWeightedAverageGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="MiscellaneousGeneralAndAdministrativeExpense" id="epsn_MiscellaneousGeneralAndAdministrativeExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ChangeInGatheringSystemAccruedInAccountsPayable" id="epsn_ChangeInGatheringSystemAccruedInAccountsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GatheringSystemOperatingExpenses" id="epsn_GatheringSystemOperatingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PeakExplorationAndProductionLlcAndPeakBlmLeaseLlcMember" id="epsn_PeakExplorationAndProductionLlcAndPeakBlmLeaseLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LandAcquiredAtEctorCountyMember" id="epsn_LandAcquiredAtEctorCountyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AdValoremtaxesPayableNonCurrent" id="epsn_AdValoremtaxesPayableNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="TransactionCosts" id="epsn_TransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DeferredFinancingCostsPolicyPolicyTextBlock" id="epsn_DeferredFinancingCostsPolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NaturalGasAndOtherLiquidsMember" id="epsn_NaturalGasAndOtherLiquidsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OilAndGasJointInterestBillingReceivableCollectionPeriod" id="epsn_OilAndGasJointInterestBillingReceivableCollectionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetCurrent" id="epsn_DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetNoncurrent" id="epsn_DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeFairValueNetBeforeOffset" id="epsn_DerivativeFairValueNetBeforeOffset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeFairValueNetBeforeOffsetCurrent" id="epsn_DerivativeFairValueNetBeforeOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeFairValueNetBeforeOffsetNoncurrent" id="epsn_DerivativeFairValueNetBeforeOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetCurrent" id="epsn_DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetNoncurrent" id="epsn_DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DividendEquivalentRights" id="epsn_DividendEquivalentRights" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationContingentConsiderationTransferredEquityInterestShareIssuedNumberOfShares" id="epsn_BusinessCombinationContingentConsiderationTransferredEquityInterestShareIssuedNumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationConsiderationTransferredEquityInterestShareIssuedNumberOfSharesBusinessacquisitionequityinterestsissuedorissuablenumberofsharesissued" id="epsn_BusinessCombinationConsiderationTransferredEquityInterestShareIssuedNumberOfSharesBusinessacquisitionequityinterestsissuedorissuablenumberofsharesissued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedRevenueAndProductionTaxesPayable" id="epsn_BusinessCombinationRecognizedLiabilityAssumedRevenueAndProductionTaxesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedAdValoremTaxesPayableCurrent" id="epsn_BusinessCombinationRecognizedLiabilityAssumedAdValoremTaxesPayableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedRightOfUseAssetLiabilityCurrent" id="epsn_BusinessCombinationRecognizedLiabilityAssumedRightOfUseAssetLiabilityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedAssetRetirementObligations" id="epsn_BusinessCombinationRecognizedLiabilityAssumedAssetRetirementObligations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedAdValoremTaxesPayableNoncurrent" id="epsn_BusinessCombinationRecognizedLiabilityAssumedAdValoremTaxesPayableNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedRightOfUseAssetLiabilityNoncurrent" id="epsn_BusinessCombinationRecognizedLiabilityAssumedRightOfUseAssetLiabilityNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DeweyEnergyHoldingLlcMember" id="epsn_DeweyEnergyHoldingLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfGrossWellsHeld" id="epsn_NumberOfGrossWellsHeld" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="NumberOfNetWellsHeld" id="epsn_NumberOfNetWellsHeld" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationAdjustmentOfDeferredTaxBalancesAmount" id="epsn_EffectiveIncomeTaxRateReconciliationAdjustmentOfDeferredTaxBalancesAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxesAmount" id="epsn_EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxesAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationOtherNonTaxableOrNondeductibleItemsAmount" id="epsn_EffectiveIncomeTaxRateReconciliationOtherNonTaxableOrNondeductibleItemsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxesPercent" id="epsn_EffectiveIncomeTaxRateReconciliationForeignWithholdingTaxesPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationAdjustmentOfDeferredTaxBalancesPercent" id="epsn_EffectiveIncomeTaxRateReconciliationAdjustmentOfDeferredTaxBalancesPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EffectiveIncomeTaxRateReconciliationOtherNonTaxableOrNondeductibleItemsPercent" id="epsn_EffectiveIncomeTaxRateReconciliationOtherNonTaxableOrNondeductibleItemsPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="OperatingLossCarryforwardTaxEffected" id="epsn_OperatingLossCarryforwardTaxEffected" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PercentageOfHedgingAnticipatedProductionFromPdpReservesUponDropInFacilityUtilizationBelowThreshold" id="epsn_PercentageOfHedgingAnticipatedProductionFromPdpReservesUponDropInFacilityUtilizationBelowThreshold" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="HedgingTermUponDropInFacilityUtilizationBelowThreshold" id="epsn_HedgingTermUponDropInFacilityUtilizationBelowThreshold" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="CashConsiderationReceivablesCollectionPeriod" id="epsn_CashConsiderationReceivablesCollectionPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationRecognizedAssetAcquiredJointInterestBillingReceivable" id="epsn_BusinessCombinationRecognizedAssetAcquiredJointInterestBillingReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="CustomerFiveMember" id="epsn_CustomerFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfReportableSegmentsNotDisclosedFlag" id="epsn_NumberOfReportableSegmentsNotDisclosedFlag" type="xbrli:booleanItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="NormalCourseIssuerBidRepurchaseProgramFebruary182026ToFebruary182027Member" id="epsn_NormalCourseIssuerBidRepurchaseProgramFebruary182026ToFebruary182027Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DividendEquivalentRightsMember" id="epsn_DividendEquivalentRightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ArmEnergyMember" id="epsn_ArmEnergyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AresEnergyMember" id="epsn_AresEnergyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WilliamsMember" id="epsn_WilliamsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessCombinationContingentConsiderationEquityInterestMaximumSharesIssuableNumberOfShares" id="epsn_BusinessCombinationContingentConsiderationEquityInterestMaximumSharesIssuableNumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationContingentConsiderationLiabilitySettled" id="epsn_BusinessCombinationContingentConsiderationLiabilitySettled" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BusinessCombinationRecognizedLiabilityAssumedSellerCosts" id="epsn_BusinessCombinationRecognizedLiabilityAssumedSellerCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationRecognizedAssetAcquiredProvedOilAndGasProperties" id="epsn_BusinessCombinationRecognizedAssetAcquiredProvedOilAndGasProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="BusinessCombinationRecognizedAssetAcquiredUnprovedOilAndGasProperties" id="epsn_BusinessCombinationRecognizedAssetAcquiredUnprovedOilAndGasProperties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
</xsd:schema>
