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The barrel of oil equivalent (BOE) is a unit of energy based on the approximate energy released by burning one barrel (42 U.S. gallons or 158.9873 litres) of crude oil. The BOE is used by oil and gas companies in their financial statements as a way of combining oil and natural gas reserves and production into a single measure, although this energy equivalence does not take into account the lower financial value of energy in the form of gas. The U.S. Internal Revenue Service defines a BOE as equal to 5.8 × 106 BTU.〔(IRS publication )〕 (5.8 × 106 BTU59 °F equals 6.1178632 × 109 J, about 6.1 GJ (HHV), or .) The value is necessarily approximate as various grades of oil and gas have slightly different heating values. If one considers the lower heating value instead of the higher heating value, the value for one BOE would be approximately 5.4 GJ (see ton of oil equivalent). Typically or 58 CCF are equivalent to one BOE. The USGS gives a figure of 6,000 cubic feet (170 cubic meters) of typical natural gas.〔(Table AR-1 USGS World Petroleum Assessment 2000, Description and results, USGS World Energy Assessment team )〕 A commonly used multiple of the BOE is the kilo barrel of oil equivalent (kboe or kBOE), which is 1,000BOE. Other common multiples are the million barrels per day, MMboed (or MMBOED, MMboepd), used to measure daily production and consumption,〔(Energy Infocard ) retrieved 16 October 2008〕 and the BBOe (also BBOE) or billion barrel of oil equivalent, representing 109 barrels of oil, used to measure petroleum reserves.〔(USGS World Petroleum Assessment ) retrieved 16 October 2008〕 Metric users may talk of the tonne of oil equivalent (TOE), or more often million TOE (MTOE). Since this is a measurement of weight, any conversion to barrels of oil equivalent depends on the density of the oil in question, as well as the energy content. Typically 1 tonne of oil has a volume of 6.8-7.5 barrels. The United States EIA suggests 1TOE has an average energy value of 39.68 million Btu.〔(Conversion Factors ) retrieved 16 October 2008〕 == See also == *Conversion of units#Energy *Cubic mile of oil *Energy density *Heat of combustion *Miles per gallon gasoline equivalent *Therm *Ton of oil equivalent 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Barrel of oil equivalent」の詳細全文を読む スポンサード リンク
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