| 摘要 |
<p>In a hydrocarbon(oil)well an instrumentation line can be introduced down the well bore 12 by means of control line 16 in the form of pressure tubing conduit fixed on the outside of intermediate casing 14 and set in cement slurry 21 between the intermediate casing 14 and the surrounding rock 13 and reaching to the production zone of interest 15 where hydrocarbon is to be found. A hollow primary member 18 accepts the distal end of the control line 16 at the end of the intermediate casing 14. A secondary member 22 has a terminal control line 27 (sealed at its far end) attached on its outer surface. When in place, the secondary member 22 extends into and through the zone of interest 15. When the secondary member 22 is lowered through the primary member 18, its top end is lowered onto the bottom end of the primary member 18. Coupling means 20 24 automatically engage and angularly orientate so that the top of the terminal control line 27 couples to and seals with the distal end of the control line 16 to form a continuous high pressure tube from the well head 10 to the very bottom of the well, through which a fibre optic instrumentation line can be threaded. An alternative embodiment has a loop 26 of control line on the secondary member 22, coupling to a pair of control lines 16 to form a continuous loop of control line wherein a fibre optic instrumentation line can be passed from the surface down one of the control lines 16, around the loop 26, and back up to the surface in the other of the control line 16. <IMAGE></p> |
