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    <element id="useg_TotalNetossesncludednAbstract" name="TotalNetossesncludednAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="useg_FairValueAdjustmentsIncludedInNetLossAbstract" name="FairValueAdjustmentsIncludedInNetLossAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="useg_FairValueMeasurementsDetailsNarrativeAbstract" name="FairValueMeasurementsDetailsNarrativeAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
</schema>
