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SCHEDULE OF STANDARDIZED MEASURE OF DISCOUNTED FUTURE NET CASH FLOWS (Details) (Parenthetical)	Dec. 31, 2021	Dec. 31, 2020
Extractive Industries [Abstract]
Annual Discount factor	10.00%	10.00%

X

- Definition

Annual Discount factor.

+ References

No definition available.

+ Details

Name:	USEG_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscount
Namespace Prefix:	USEG_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	srt_ExtractiveIndustriesAbstract
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration