18 July 2017


Clamps that grip a stand of casing, tubing, drill pipe, or sucker rods so that the stand can be raised from or lowered into the hole.
18 July 2017

Engine horsepower

An internal combustion engine can, temporarily, develop at any speed a maximum usable horsepower; also, can temporarily, run at much higher speeds than economically feasible with […]
25 July 2017

Evening tour (pronounced “tower”)

The shift of duty on a drilling rig that starts in the afternoon and runs through the evening. Sometimes called afternoon tour. Compare daylight tour, graveyard […]
18 July 2017

Exploitation well

A well drilled to permit more effective extraction of oil from a reservoir. Sometimes called a development well.