The component in a blowout preventer that cuts, or shears, through drill pipe and forms a seal against well pressure. Shear rams are used in floating […]

1) a grooved pulley. 2) support wheel over which tape, wire, or cable rides.

Established at the bottom end of the conductor casing by cementing. See leak off test and conductor casing.

The appearance of oil or gas in cuttings, samples, or cores from a drilling well.