A method of stimulating production by opening new flow channels in the rock surrounding a production well. Often called a frac job. Under extremely high hydraulic […]

The force exerted by fluids in a formation, recorded in the hole at the level of the formation with the well shut in. Also called reservoir […]

The gathering of pressure data on a formation to determine its potential productivity before installing casing in a well. The conventional method is the drill stem […]

A section of drill pipe, casing, or tubing consisting of four joints screwed together. Compare double, single, thribble. See joint.

The name used for the working platform of the derrickman, or the monkeyboard, when it is located at a height in the derrick equal to approximately […]

Shortened form of formation fracturing. See formation fracturing.