Stock Tank Barrel Conditions

However the industry prefers to use the stock tank barrels designation so that it is clear that the volume being cited is based on surface conditions and not reservoir conditions.

Stock tank barrel conditions.

For gases we use standard conditions p sc and t sc as the reference. One barrel of stabilized or dead oil at the surface after the gas has escaped. See stock tank conditions. 20 25 990 december 7 2012.

2 42 a where b oi is the fvf under initial conditions. References edit 1. 2 42 a where b oi is the fvf under initial conditions. In reservoir barrels per stock tank barrel where v o stp volume of oil at standard temperature and pressure we have a plot like that shown in fig.

After production has begun the change in reservoir pressure over time and the history of production from that reservoir can be used to estimate the total oil in place using the materials. Alaska oil and gas conservation commission definitions alaska admin. A stock tank barrel is commonly abbreviated as stb. In this figure the stock tank pressure and temperature p st and t st are the field specific reference pressure and temperature used in all reservoir engineering calculations for crude oil and produced water when referring to liquid volumes at stock tank conditions we use the units of stock tank barrels stb.

In this case stock tank barrels refers to the volume of oil after production at surface pressure and temperature as opposed to reservoir conditions. Stock tank barrel stock tank barrel means 42 u s. Stock tank barrels indicates that the cited volume is at surface conditions so it is the same unit as the generic definition of a barrel. Gallons measured at 60ø f and 14 65 psia.

Stock tank oil refers to the volume of oil after flashing to nominal atmospheric or other stated storage pressure and temperature as opposed to reservoir conditions.