Coiled tubing:A long, continuous length of pipe wound on a spool.
The pipe is straightened prior to pushing into a wellbore and recoiled to spool the pipe back onto the transport and storage spool.
Depending on the pipe diameter (1 in.
To 4 1/2 in.) and the spool size, coiled tubing can range from 2000 ft to 15,000 ft [610 to 4570 m] or greater length.
May be used for drilling; i.e.
Coiled tubing drilling.
see also reeled tubing.