<?xml version="1.0" encoding="us-ascii"?>
<!--XBRL document created with Bowne Tagger. XBRL Parser version 10.0.0.114-->
<!--Based on XBRL 2.1-->
<schema targetNamespace="http://swiftenergy.com/20110930" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" elementFormDefault="qualified" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:sfy="http://swiftenergy.com/20110930" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:us-types="http://fasb.org/us-types/2011-01-31">
  <annotation>
    <appinfo>
      <link:roleType roleURI="http://swiftenergy.com/role/AcquisitionsAndDispositionsDetails" id="AcquisitionsAndDispositionsDetails">
        <link:definition>0607 - Disclosure - Acquisitions and Dispositions (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://swiftenergy.com/role/ShareBasedCompensationDetailsTextual" id="ShareBasedCompensationDetailsTextual">
        <link:definition>06031 - Disclosure - Share Based Compensation (Details Textual)</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://swiftenergy.com/role/FinancialInformationDetails2" id="FinancialInformationDetails2">
        <link:definition>06092 - Disclosure - Condensed Consolidating Financial Information (Details 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://swiftenergy.com/role/FinancialInformationDetails1" id="FinancialInformationDetails1">
        <link:definition>06091 - Disclosure - Condensed Consolidating Financial Information (Details 1)</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://swiftenergy.com/role/FinancialInformationTables" id="FinancialInformationTables">
        <link:definition>0509 - Disclosure - Condensed Consolidating Financial Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://swiftenergy.com/role/FinancialInformationDetails" id="FinancialInformationDetails">
        <link:definition>0609 - Disclosure - Condensed Consolidating Financial 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://swiftenergy.com/role/EarningsPerShareDetails" id="EarningsPerShareDetails">
        <link:definition>0604 - Disclosure - Earnings 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://swiftenergy.com/role/EarningsPerShareTables" id="EarningsPerShareTables">
        <link:definition>0504 - Disclosure - Earnings 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://swiftenergy.com/role/FairValueMeasurementsTables" id="FairValueMeasurementsTables">
        <link:definition>0508 - 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://swiftenergy.com/role/FairValueMeasurementsDetails" id="FairValueMeasurementsDetails">
        <link:definition>0608 - 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://swiftenergy.com/role/DiscontinuedOperationsDetails" id="DiscontinuedOperationsDetails">
        <link:definition>0606 - Disclosure - Discontinued Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://swiftenergy.com/role/ShareBasedCompensationDetails" id="ShareBasedCompensationDetails">
        <link:definition>0603 - Disclosure - Share-Based Compensation (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://swiftenergy.com/role/ShareBasedCompensationTables" id="ShareBasedCompensationTables">
        <link:definition>0503 - Disclosure - Share-Based Compensation (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://swiftenergy.com/role/LongTermDebtDetails" id="LongTermDebtDetails">
        <link:definition>0605 - Disclosure - Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://swiftenergy.com/role/LongTermDebtTables" id="LongTermDebtTables">
        <link:definition>0505 - Disclosure - Long-Term Debt (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://swiftenergy.com/role/SummaryOfSignificantAccountingPoliciesDetails1" id="SummaryOfSignificantAccountingPoliciesDetails1">
        <link:definition>06021 - Disclosure - Summary of Significant Accounting Policies (Details Textual)</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://swiftenergy.com/role/SummaryOfSignificantAccountingPoliciesTables" id="SummaryOfSignificantAccountingPoliciesTables">
        <link:definition>0502 - 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://swiftenergy.com/role/SummaryOfSignificantAccountingPoliciesDetails" id="SummaryOfSignificantAccountingPoliciesDetails">
        <link:definition>0602 - Disclosure - Summary of Significant Accounting Policies (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://swiftenergy.com/role/SummaryOfSignificantAccountingPoliciesPolicies" id="SummaryOfSignificantAccountingPoliciesPolicies">
        <link:definition>0402 - 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://swiftenergy.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>00 - 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://swiftenergy.com/role/BalanceSheets" id="BalanceSheets">
        <link:definition>0110 - Statement - Condensed 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://swiftenergy.com/role/BalanceSheetsParenthetical" id="BalanceSheetsParenthetical">
        <link:definition>0111 - 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://swiftenergy.com/role/StatementsOfOperations" id="StatementsOfOperations">
        <link:definition>0120 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://swiftenergy.com/role/StatementsOfShareholdersEquity" id="StatementsOfShareholdersEquity">
        <link:definition>0130 - Statement - Condensed Consolidated Statements of Stockholders' 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://swiftenergy.com/role/StatementsOfShareholdersEquityParenthetical" id="StatementsOfShareholdersEquityParenthetical">
        <link:definition>0131 - Statement - Condensed Consolidated Statements of Stockholders' Equity (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://swiftenergy.com/role/StatememntsOfCashFlows" id="StatememntsOfCashFlows">
        <link:definition>0140 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://swiftenergy.com/role/GeneralInformation" id="GeneralInformation">
        <link:definition>0201 - Disclosure - General 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://swiftenergy.com/role/SummaryOfSignificantAccountingPolicies" id="SummaryOfSignificantAccountingPolicies">
        <link:definition>0202 - 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://swiftenergy.com/role/ShareBasedCompensation" id="ShareBasedCompensation">
        <link:definition>0203 - Disclosure - Share-Based Compensation</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://swiftenergy.com/role/EarningsPerShare" id="EarningsPerShare">
        <link:definition>0204 - Disclosure - Earnings 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://swiftenergy.com/role/LongTermDebt" id="LongTermDebt">
        <link:definition>0205 - Disclosure - Long-Term Debt</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://swiftenergy.com/role/DiscontinuedOperations" id="DiscontinuedOperations">
        <link:definition>0206 - Disclosure - Discontinued Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://swiftenergy.com/role/AcquisitionsDispositionsAndJointVentures" id="AcquisitionsDispositionsAndJointVentures">
        <link:definition>0207 - Disclosure - Acquisitions and Dispositions</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://swiftenergy.com/role/FairValueMeasurements" id="FairValueMeasurements">
        <link:definition>0208 - 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://swiftenergy.com/role/FinancialInformation" id="FinancialInformation">
        <link:definition>0209 - Disclosure - Condensed Consolidating Financial Information</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="sfy-20110930_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sfy-20110930_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Label Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sfy-20110930_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links, all" />
      <link:linkbaseRef xlink:type="simple" xlink:href="sfy-20110930_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links, all" />
    </appinfo>
  </annotation>
  <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import namespace="http://xbrl.sec.gov/dei/2011-01-31" schemaLocation="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd" />
  <import namespace="http://fasb.org/us-gaap/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd" />
  <import namespace="http://fasb.org/us-types/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-types-2011-01-31.xsd" />
  <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <element id="sfy_AccruedCapitalCosts" name="AccruedCapitalCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_UndistributedOilAndGasRevenues" name="UndistributedOilAndGasRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_SeveranceAndOtherTaxes" name="SeveranceAndOtherTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="sfy_ReclassificationOfPriorPeriodBalancesPolicyTextBlock" name="ReclassificationOfPriorPeriodBalancesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_InsuranceClaimsPolicyTextBlock" name="InsuranceClaimsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_SupervisionFeesPolicyTextBlock" name="SupervisionFeesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_AccountsPayableAndAccruedLiabilitiesPolicyTextBlock" name="AccountsPayableAndAccruedLiabilitiesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PublicStockOfferingPolicyTextBlock" name="PublicStockOfferingPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_NewAccountingPronouncementsPolicyTextBlock" name="NewAccountingPronouncementsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_CapitalizedCostsOilAndGasProducingActivities" name="CapitalizedCostsOilAndGasProducingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="sfy_AccumulatedOtherComprehensiveIncomeLossGross" name="AccumulatedOtherComprehensiveIncomeLossGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_AccumulatedOtherComprehensiveIncomeLossTax" name="AccumulatedOtherComprehensiveIncomeLossTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_SeniorNotesDue2017Member" name="SeniorNotesDue2017Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_SeniorNotesDue2020Member" name="SeniorNotesDue2020Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_OtherReceivablesMember" name="OtherReceivablesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_AccountsNotesLoansAndFinancingReceivableTextualAbstract" name="AccountsNotesLoansAndFinancingReceivableTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_BankBorrowingsMember" name="BankBorrowingsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_LongTermDebtTextualAbstract" name="LongTermDebtTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_NumberOfSyndicatedBanks" name="NumberOfSyndicatedBanks" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="sfy_BanksPrimeRate" name="BanksPrimeRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="sfy_MaximumLevelOfCashDividends" name="MaximumLevelOfCashDividends" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="sfy_AggregateLimitationOnPurchasesOfStock" name="AggregateLimitationOnPurchasesOfStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="sfy_RedeterminationOfBorrowingBaseAmount" name="RedeterminationOfBorrowingBaseAmount" type="us-types:durationStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="sfy_EffectiveYieldToMaturityOfSeniorNotes" name="EffectiveYieldToMaturityOfSeniorNotes" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_OtherComprehensiveIncomeLossEffectOfCashFlowHedgesSettledDuringPeriodGross" name="OtherComprehensiveIncomeLossEffectOfCashFlowHedgesSettledDuringPeriodGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_OtherComprehensiveIncomeLossEffectOfCashFlowHedgesSettledDuringPeriodTax" name="OtherComprehensiveIncomeLossEffectOfCashFlowHedgesSettledDuringPeriodTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_OtherComprehensiveIncomeLossEffectOfCashFlowHedgesSettledDuringPeriodNetOfTax" name="OtherComprehensiveIncomeLossEffectOfCashFlowHedgesSettledDuringPeriodNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_DiscountRateForEstimatedFutureNetRevenuesFromProvedProperties" name="DiscountRateForEstimatedFutureNetRevenuesFromProvedProperties" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_JointInterestOwnersMember" name="JointInterestOwnersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PercentageOfWorkingInterestInterestInWells" name="PercentageOfWorkingInterestInterestInWells" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_SupervisionFees" name="SupervisionFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="sfy_ConditionForRecognitionOfIncomeTaxBenefit" name="ConditionForRecognitionOfIncomeTaxBenefit" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_CashAndCashEquivalentDescription" name="CashAndCashEquivalentDescription" type="us-types:durationStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PercentageAtWhichSeniorNotesAreIssuedNetOfDiscount" name="PercentageAtWhichSeniorNotesAreIssuedNetOfDiscount" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="sfy_LongTermDebtAdditionalTextualAbstract" name="LongTermDebtAdditionalTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisedInPeriodWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_ShareBasedCompensationTextualAbstract" name="ShareBasedCompensationTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_DiscontinuedOperationsTextualAbstract" name="DiscontinuedOperationsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_LookBackPeriodToEstimateExpectedVolatilityOfStockOptionGrants" name="LookBackPeriodToEstimateExpectedVolatilityOfStockOptionGrants" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionGrantsInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionGrantsInPeriodWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionForfeituresInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionForfeituresInPeriodWeightedAverageExercisePrice" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_RemainingContractLifeOfExercisableStockOption" name="RemainingContractLifeOfExercisableStockOption" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="sfy_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextualAbstract" name="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_FairValueMeasurementsPolicyTextBlock" name="FairValueMeasurementsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_EarningsPerShareTextualAbstract" name="EarningsPerShareTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_IncomeLossFromContinuingOperationsReallocatedToUnvestedShareholders" name="IncomeLossFromContinuingOperationsReallocatedToUnvestedShareholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="sfy_AccruedSeveranceTaxes" name="AccruedSeveranceTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_AccountsReceivableOilAndGasSales" name="AccountsReceivableOilAndGasSales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" />
  <element id="sfy_IncomeLossFromContinuingOperationsAllocatedToCommonShares" name="IncomeLossFromContinuingOperationsAllocatedToCommonShares" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="sfy_IncomeLossFromContinuingOperationsAllocatedToCommonSharesAndAssumedShareConversions" name="IncomeLossFromContinuingOperationsAllocatedToCommonSharesAndAssumedShareConversions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="sfy_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_SummaryOfSignificantAccountingPoliciesTextualAbstract" name="SummaryOfSignificantAccountingPoliciesTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_CondensedConsolidatingBalanceSheetsTableTextBlock" name="CondensedConsolidatingBalanceSheetsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_CondensedConsolidatingStatementsOfIncomeTableTextBlock" name="CondensedConsolidatingStatementsOfIncomeTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_CondensedConsolidatingStatementsOfCashFlowTableTextBlock" name="CondensedConsolidatingStatementsOfCashFlowTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_DiscontinuedOperationsBasicAndDilutedPerShare" name="DiscontinuedOperationsBasicAndDilutedPerShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PublicStockOfferPricePerShare" name="PublicStockOfferPricePerShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_DebtIssuanceCostsTextualAbstract" name="DebtIssuanceCostsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_IssuanceCostOfDebt" name="IssuanceCostOfDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_NaturalGasDerivativesMember" name="NaturalGasDerivativesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_OilDerivativesMember" name="OilDerivativesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_FairValueMeasurementsTextualAbstract" name="FairValueMeasurementsTextualAbstract" abstract="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_WeightedAverageNumberOfBasicSharesOutstanding" name="WeightedAverageNumberOfBasicSharesOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_BeforeIncreaseMember" name="BeforeIncreaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_AfterIncreaseMember" name="AfterIncreaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_OptionsExercisedNumberOfShares" name="OptionsExercisedNumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PropertyDispositionCurrent" name="PropertyDispositionCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="sfy_PercentageOfAdditionalSpreadToFederalFundRate" name="PercentageOfAdditionalSpreadToFederalFundRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PercentageOfAdditionalSpreadToLiborRate" name="PercentageOfAdditionalSpreadToLiborRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PercentageOfRedemptionPriceIncludingAccruedAndUnpaidInterestAbovePrincipleAmount" name="PercentageOfRedemptionPriceIncludingAccruedAndUnpaidInterestAbovePrincipleAmount" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_DeclineInRedemptionPriceEqualToPrincipleAmountOfDebt" name="DeclineInRedemptionPriceEqualToPrincipleAmountOfDebt" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_MaximumRedemptionOfPrincipleAmountOfNotesWithNetProceedsOfQualifyingOfferings" name="MaximumRedemptionOfPrincipleAmountOfNotesWithNetProceedsOfQualifyingOfferings" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_RedemptionOfDebtsWithNetProceedsOfQualifyingOfferingsAtPriceAbovePrincipleAmountOfDebts" name="RedemptionOfDebtsWithNetProceedsOfQualifyingOfferingsAtPriceAbovePrincipleAmountOfDebts" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PercentageOfPrincipleAmountOfNotesEqualToPurchasePrice" name="PercentageOfPrincipleAmountOfNotesEqualToPurchasePrice" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PeriodAfterWhichFirstInstallmentReceived" name="PeriodAfterWhichFirstInstallmentReceived" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PeriodAfterWhichSecondInstallmentReceived" name="PeriodAfterWhichSecondInstallmentReceived" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_PeriodAfterWhichThirdInstallmentReceived" name="PeriodAfterWhichThirdInstallmentReceived" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_AmountPerInstallmentToBeReceivedFromDivestitureOfBusiness" name="AmountPerInstallmentToBeReceivedFromDivestitureOfBusiness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" />
  <element id="sfy_PercentageOfFaceValueAmountForMeasuringSeniorNotesAtTheirFairValue" name="PercentageOfFaceValueAmountForMeasuringSeniorNotesAtTheirFairValue" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_MaximumDebtInstrumentEscalatingBasisSpreadOnBaseRate" name="MaximumDebtInstrumentEscalatingBasisSpreadOnBaseRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_NumberOfInstallmentsInWhichProceedsFromDivestitureOfBusinessesToBeReceived" name="NumberOfInstallmentsInWhichProceedsFromDivestitureOfBusinessesToBeReceived" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_MinimumDebtInstrumentEscalatingBasisSpreadOnBaseRate" name="MinimumDebtInstrumentEscalatingBasisSpreadOnBaseRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_MinimumDebtInstrumentEscalatingBasisSpreadOnRate" name="MinimumDebtInstrumentEscalatingBasisSpreadOnRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="sfy_MaximumDebtInstrumentEscalatingBasisSpreadOnRate" name="MaximumDebtInstrumentEscalatingBasisSpreadOnRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
</schema>
