| 摘要 |
The present invention relates to a system with an injector head apparatus (10) for feeding a coiled tubing (26) in or out of a well (34). The injector head apparatus comprises: a plurality of annular-shaped electromagnetic means (12) stacked to form a structure (14) with a through channel (16); and a power supply means (20) for supplying electrical power to the electromagnetic means, wherein the plurality of electromagnetic means are adapted to exert a magnetic force along the longitudinal axis of the coiled tubing when the coiled tubing is at least partly inserted into the through channel of the structure so as to drive the coiled tubing through the through channel and in or out of the well as electrical power is supplied to the electromagnetic means by the power supply means. The present invention also relates to a method of feeding a coiled tubing in or out of a well. |
