Formation Pressure

Bottom-hole pressure from mud weight and depth in oilfield units.

Standard measure of how light or heavy a crude oil is relative to water.

Reduction in a steel pipe string's weight when submerged in drilling mud.

Effective mud density while circulating, including friction pressure.

Speed of mud returning up the annulus, key to carrying cuttings out.

Mud volume per minute from a triplex pump's bore, stroke and speed.