To temporarily or permanently cease production from a well or to cease further drilling operations.

To unscrew one threaded piece, e.g. a section of pipe, from another.

The section of a wellbore that has had metal casing placed and cemented.

A record made each day of the operations on a working drilling rig. It is traditionally phoned, faxed, emailed, or radioed in to the office of the drilling company and possibly the operator every morn [..]

An object that is left in the wellbore during drilling or workover operations and that must be recovered before work can proceed. It can be anything from a piece of scrap metal to a part of the drill [..]

A drilling mud that contains entrained formation gas, giving the mud a characteristically fluffy texture. Gas cut mud may unintentionally lower the fluid density.

Hardbanding is the process of applying hardfacing alloys onto the drill pipe tool joint, drill collars, and heavy weight drill pipe to increase tubular durability in drilling applications.

The deviation angle measured from vertical direction, expressed in degrees. It is normally part of the survey data.

A percussion tool operated manually or hydraulically to deliver a heavy upward or downward blow to fish stuck in the wellbore.

The heavy square or hexagonal steel member suspended from the swivel through the rotary table and connected to the drill pipe to turn the drill stem as the rotary table turns.