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.