Rams are the flexible elements which accomplish the sealing effect of the blowout preventer. It is necessary to change the rams when drill pipe of a […]

A valve that permits flow in one direction only. If the gas or liquid starts to reverse, the valve automatically closes, preventing reverse movement. Commonly referred […]

A device with an orifice installed in a line to restrict the flow of fluids. Chokes are also used to control the rate of flow of […]

Flexible pipe jumper located between choke manifold and blow-out preventer.

A pipe attached to the blowout preventer stack out of which kick fluids and mud can be pumped to the choke manifold when a blowout preventer […]

An arrangement of piping and special valves, called chokes. In drilling, mud is circulated through a choke manifold when the blowout preventers are closed; a choke […]

A valve that permits flow in one direction only.

To pass from one point throughout a system and back to the starting point. For example, drilling fluid is circulated out of the suction pit, down […]

A fluid consisting of water, oil, or other liquid and containing clay, weighting materials, and/or chemicals, which is circulated through the drill pipe and wellbore during […]

The movement of drilling fluid out of the mud pits, down the drill stem, up the annulus, and back to the mud pits.

Sodium carboxymethylcellulose. A nonfermenting cellulose product used in drilling fluids to combat contamination from anhydrite (gyp) and lower the water loss from the drilling fluid to […]