A well servicing hand who cleans out wellbores.

An employee of a drilling contractor who is in charge of the entire drilling crew and the drilling rig.

Also called a toolpusher, drilling foreman, rig supervisor, or rig superintendent.

To bleed pressure from casing of a dead well, then from tubing, then from casing, and so on so that the well will start to flow.

A short length of sucker rod that is attached to the top of the sucker rod pump

A sucker rod string, that is, the entire length of sucker rods, which usually consist of several single rods screwed together.

The rod string serves as a mechanical link from the beam pumping unit on the surface to the sucker rod pump near the bottom of the well.

Also called a toolpusher.

See toolpusher.

An instrument for measuring the resistivity of drilling fluids and their cakes.

The derrick or mast, drawworks, and attendant surface equipment of a drilling or workover unit.

A device used to hang sucker rods on the mast or in the derrick

A small swivel hook having a fast-operating automatic latch to close the hook opening when weight is suspended from the hook.

The ratio of effective permeability to absolute permeability.

The relative permeability of rock to a single fluid is 1.0 when only that fluid is present, and 0.0 when the presence of another fluid prevents all flow of the given fluid.

Compare absolute permeability, effective permeability.

A ship or barge specially designed to handle pipeline that is wound onto a large reel.

To lay the pipeline, the vessel pays out the pipe off the reel at a steady rate onto the ocean flow.

The pipeline has been constructed at an offshore facility where it has been welded, coated, inspected, and wound onto the reel.

See recovery efficiency

A water-base clay mud containing caustic soda and tannates to which lime has been added.

Also called red mud.

A system of controls, convenient to the driller, which can be used selectively to actuate valves at the master control panel.