Coiled Tubing

Definition - What does Coiled Tubing mean?

Coiled tubing is a long metal pipe that is spooled around a large reel. It is used for well intervention as well as drilling operations. Coiled tubing pipe is uncurled out before it is pushed into a wellbore. After the operation is completed, the pipe is put back on the reel and prepared to be transported for storage. The length of the coiled tubing depends on the diameter of the pipe and the size of the spool. On an average the length of the CT pipe can start from 2,000 ft. and go up to 15,000 ft.

Petropedia explains Coiled Tubing

Coiled tubing is usually employed to conduct operations such as drilling, sidetracking, production tubing and low-bottomhole pressure drilling etc. This long pipe of metal is curled up on a big roll and it is straightened out before it is pushed inside a wellbore. The tool string attached at the bottom of this coil is referred to as BHA, i.e., bottom hole assembly. Coiled tubing operations are carried out on the surface as well as sub-sea wells, where drillship, or semi-submersible equipment are brought into use. Through coil tubing, all kinds of oil well operations including milling, drilling and fracturing can be performed.

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