Patent ID: 8733457

Claim:
A method of moving coiled tubing relative to a wellbore during operation of an application using the coiled tubing, wherein the method comprises: (a) locating a coiled tubing displacement system between a wellhead and a coiled tubing reel, wherein at least some of the coiled tubing is reeled on the coiled tubing reel; (b) running an end of the coiled tubing to a downhole position at which operation of the application will occur; and (c) operating the application using the coiled tubing, wherein during the step of operating the application (i) gripping the coiled tubing at a gripped location above the wellhead and adjacent to a substantially unbent section of the coiled tubing, (ii) energizing the displacement system to move the gripped location relative to the wellhead such that a first portion of the coiled tubing is repeatedly withdrawn from and inserted into the wellbore without increasing the state of bend of the coiled tubing outside of the wellbore, (iii) the end of the coiled tubing repeatedly moves up and down at the downhole position while the first portion of the coiled tubing is repeatedly withdrawn from and inserted into the wellbore.