Patent ID: 9200486
Filing Date: 2015-12-01
Classification: E21B

Abstract:
1. A drill string element comprising: a main pipe with connection ends and a protective means for at least one wire, the protective means extending within a central bore of the main pipe, the main pipe presenting a first hole in one of the connection ends and a second hole in the other connection end, both holes communicating with the central bore, wherein the protective means comprises a guide tube arranged for housing the wire, both ends of the guide tube being respectively disposed within the first hole and the second hole, retaining means being arranged in at least one of the first hole and the second hole for the respective end of the guide tube, and the retaining means configured to prevent the respective end of the guide tube from moving relative to the one of the first hole and the second hole according to at least one longitudinal direction of the hole, wherein the guide tube houses an additional guide tube housing the at least one wire and includes communication means for mud between guide tube outer and inner peripheral surfaces and the additional guide tube is arranged such that the additional guide tube is free to move with respect to the guide tube in the longitudinal direction thereof.