Patent ID: 8668510
Filing Date: 2014-03-11
Classification: E21B

Abstract:
1. A tubular component of a drill stem, comprising a first end comprising a first threading, a second end comprising a second threading, and a substantially tubular central zone along a longitudinal axis, the component further comprising an electrical connecting device, mounted on at least one of the ends, and a cable for the transmission of signals between the first end and the second end, connected to the connecting device, the connecting device comprising: at least one conductor provided with an electrically insulated link portion connected to the transmission cable and an electrical contact portion in an extension of the insulated link portion; and a dielectric means to isolate the insulated link portion, wherein the insulated link portion together with the dielectric means form an annular sealing surface to define, with a sealing ring, an annular protected zone, such that said electrical contact portion is disposed in the annular protected zone, and the annular sealing surface is compressed by an annular sealing surface of a complementary tubular component when the tubular component is connected with the complementary tubular component, the sealing ring being radially disposed between the annular sealing surfaces of the tubular component and the complementary tubular component.