A long steel casing that uses an inclined plane to cause the bit to deflect from the original borehole at a slight angle. Whipstock are sometimes […]

1) a well drilled in an area where no oil or gas production exists. 2) [nautical] the geared sheave of a windlass used to pull anchor […]

A specification of a derrick used to indicate the resistance of the derrick to the force of wind. The wind load rating is calculated according to […]

A cable composed of steel wires twisted around a central core of fiber or steel wire to create a rope of great strength and considerable flexibility. […]

A slender, rodlike or threadlike piece of metal, usually small in diam, that is used for lowering special tools (such as logging sondes, perforating guns, and […]

The normal operating pressure to which a component is designed to operate continuously with a safe drilling margin below the point at which the material will […]

1) a new and inexperienced worker on a drilling rig. 2) a short revolving screw with spiral shaped-threads.