Coiled umbilical tubing

摘要

A method of producing an umbilical includes providing an elongate flat metal strip, providing an elongate service carrier, encasing the service carrier in an insulation that is strain tolerant and high temperature tolerant, forming the metal strip into a tube shape around the insulated service carrier, and thereafter welding the edges of the metal strip to form a tube surrounding the insulated service carrier. The method may further comprise coiling the umbilical onto a spool. Such an umbilical may be useful for carrying fluids, power, control signals, or the like into a well.

主权项

1. An umbilical, comprising:
an elongate welded metal tube configured for insertion into downhole wells, the elongate welded metal tube comprising:
a first longitudinal section of the elongate welded metal tube, the first longitudinal section encasing a first service carrier that provides a first functionality;a second longitudinal section of the elongate welded metal tube, the second longitudinal section encasing a second service carrier that provides a second functionality different than the first functionality, wherein the second longitudinal section and the first longitudinal section are not located within the same longitudinal section of the elongated welded metal tube, and wherein an end of the first longitudinal section is coupled with an end of the second longitudinal section; anda plurality of sensors disposed within the first longitudinal section and positioned along the longitudinal length of the first longitudinal section, and not disposed within the second longitudinal section, wherein each of the plurality of sensors monitor conditions within the first longitudinal section of the downhole well.