18 July 2017

Core barrel

A tubular device, usually from 10 to 60 ft (3 to 18 m) long, run at the bottom of the drill pipe in place of a […]
18 July 2017

Core catcher

The part of the core barrel that holds the formation sample.
18 July 2017

Core cutterhead

The cutting element of the core barrel assembly. In design it corresponds to one of the three main types of bits; drag bits with blades for […]
18 July 2017

Coupling

1) in piping, a metal collar with internal threads used to join two sections of threaded pipe. 2) in power transmission, a connection extending longitudinally between […]