25 July 2017

Horsepower, rotary and torque

Torque may be expressed as tangential force (pounds) and lever arm (ft) or lb-ft. (It may also be expressed as pound inches). For any one revolution […]
18 July 2017

Hydraulic control manifold

The assemblage of regulators and hydraulic control valves used to operate the BOP and well pressure control valves. Normally part of the accumulator unit.
18 July 2017

Hydraulic fracturing

An operation in which a specially blended liquid is pumped down a well and into a formation under pressure high enough to cause the formation to […]
25 July 2017

Hydraulic horsepower (hhp)

gpm x psi / 1715 = hydraulic horsepower is the horsepower equivalent of “lifting” a continuous volume rate of fluid to the height in ft represented […]
18 July 2017

Hydraulics

That branch of engineering which treats of liquids in motion, or its action. It is the know-how about the effects of fluid velocities and pressures and […]
18 July 2017

Hydromatic brake

A device mounted on the end of the drawworks shaft of a drilling rig. The hydromatic brake (often simply called the hydromatic) serves as an auxiliary […]
25 July 2017

IADC

International Association of Drilling Contractors. IADC has exclusively represented the worldwide oil and gas drilling industry since 1940. IADC is a membership organization that represents companies […]
18 July 2017

Idler

In machinery an idler pulley or sprocket is used in connection with belt drive and chain drive respectively to maintain desired tension on the belt or […]
18 July 2017

Inclinom

The trade name of an instrument used to determine whether or not the well bore is proceeding in a vertical orientation at any point. In most […]
18 July 2017

Inhibitor

According to Webster, any agent which inhibits or prevents. In drilling and producing operations, it usually refers to corrosion inhibitor. Corrosion inhibitors are used widely in […]
18 July 2017

Inland barge rig

A floating offshore drilling structure consisting of a barge on which the drilling equipment is constructed. When moved from one location to another, the barge floats. […]