Barium sulfate
18 July 2017
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18 July 2017

Barrel (bbl)

1) A measure of volume for petroleum products in the United States. One barrel is the equivalent of 42 U.S. gallons or 0.15899 cubic m (9702 cubic inches). One cubic m equals 6.2897 barrels.

2) The cylindrical part of a sucker rod pump in which the piston-like plunger moves up and down. Operating as a piston inside a cylinder, the plunger and barrel create pressure energy to lift well fluids to the surface.