million barrels

barrels/day

billion (10⁹) cubic feet

trillion (10¹²) cubic feet

million cubic feet per day

million cubic metres

million cubic metres per day

billion (10⁹) cubic metres

standard cubic feet per barrel

barrels of oil equivalent

million barrels of oil equivalent

barrels of oil equivalent per day

million tonnes of oil equivalent

thousand tonnes of oil equivalent

million tonnes of coal equivalent

million tonnes

million British thermal units

kilowatt hours

megawatt hours

gigawatt hours

terawatt hours

proven + probable (reserves)

proven + probable + possible (reserves)

blowout preventer

enhanced oil recovery

gas/oil contact

oil/water contact

gas/oil ratio

condensate/gas ratio

kelly bushing

rotary table

liquefied petroleum gas

liquefied natural gas

oil in place

stock tank oil in place

three-dimensional

total depth

true vertical depth

subsea