| 摘要 |
A device for coil tubing operations in connection with oil drilling, wherein a coil tubing (10) is adapted to carry one or more downhole tools and to supply circulation liquid to well and tool. The coil tubing has been coiled up on a rotatable drum (1) and is connected to a pump device for circulation liquid through a first swivel device (20) disposed at one end of the shaft (2) of the drum (1), and wherein within the coil tubing (10) hydraulic pipes (12, 14) and an electrical cable (16) have been passed to said downhole tool. The hydraulic pipes (12, 14) are connected to at the other end of the shaft (2). The electrical cable (16) is connected to an electrical cable (34) through a third swivel device (32) at the other end of the shaft (2). The hydraulic pipes (12, 14) each has a larger length than the length of that part of the coil tubing (10) within which the hydraulic pipes (12, 14) are disposed, and the hydraulic pipes (12, 14) are disposed in the form of substantial helical lines within the coil tubing (10). At the outer end of the coil tubing (10), a hydraulic coupling device (36) is disposed, adapted to be connected to downhole tools, and wherein the hydraulic pipes (12, 14) are connected to the coupling device (36).
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