Signal e.g. data, transmitting cable conduit e.g. drill rod, manufacturing method for e.g. oil company, involves placing extensible tubular sleeve inside tubular body, where sleeve expands on applying fluid pressure on inner wall of sleeve

摘要

The method involves equipping a tubular body (502) with a communication coupler at or at proximity to each of the ends of the body. An extensible tubular sleeve (650) is positioned inside the body, where the sleeve has a portion which is pre-positioned to cause the expansion of the sleeve by the application of an internal fluid pressure. Conducting wires are placed between an inner wall of the body and the sleeve. The wires are connected between the couplers to establish a cable link. The sleeve is expanded inside the body by the application of a fluid pressure on an inner wall of the sleeve. Independent claims are also included for the following: (1) a conduit for transmitting signals along its length in a boring environment (2) a method for transmitting of signals along the length of a tubular body.