18 July 2017
To stop work temporarily or to stop a machine or operation.
18 July 2017
The pressure at the bottom of a well when the surface valves on the well are completely closed. It is caused by formation fluids at the […]
18 July 2017
The difference between the formation pressure at the bottom of the well and the hydrostatic pressure in the drillpipe. Recorded when a well is shut in […]
18 July 2017
Using a whipstock, turbodrill, or other mud motor to drill around broken drill pipe or casing that has become lodged permanently in the hole.
18 July 2017
A coring technique in which core samples are obtained from the hole wall in a zone that has already been drilled. A hollow bullet is fired […]
10 November 2021
Two or more of the following activities being performed in close proximity, conducted under common operational control in which the activities of any one operation may […]
18 July 2017
A joint of drill pipe. Compare double, thribble, and fourble.
18 July 2017
Moving a rig from the location of a lost or completed hole preparatory to starting a new one. In skidding the rig, the move is accomplished […]
25 July 2017
Wedge-shaped pieces of metal with serrated inserts (dies) or other gripping elements, such as serrated buttons, that suspend the drill pipe or drill collars in the […]
18 July 2017
Before hoisting the drill stem from the hole, it is desirable to pump in to the top of the drill stem a quantity of very heavy […]
18 July 2017
1) in drilling, a plastic mixture of cement and water that is pumped into a well to harden. There it supports the casing and provides a […]
18 July 2017
Now commonly used as mud pit. Originally it was the pit in which clay and shale cuttings used to mix mud were stored.
