METHOD OF INSTALLING CURRENT SUPPLY TO ELECTRIC DRILL AT DRILLING WELL Russian patent published in 2018 - IPC E21B47/12 E21B17/02 E21B47/01 

FIELD: electrical engineering.

SUBSTANCE: invention is used for current supply and two-way transmission of signals from the wellhead to the bottom-hole telemetry systems during drilling. Electric cable is fed into DP drill pipe (1) with sections S (2), the length of which is equal to the length of DP (1). Before the electric cable is fed into DP (1), each of its S (2) is placed in rigid hermetic housing H (3). Carry out sealing of H (3) and electrocontacting of S (2), connect connectors (6) and (7), then fix H (3) with respect to each other with the help of coupling (8). After that, screw DP (1) with the relative axial movement of H (3) and DP (1) and fix H (3) in the radial direction with support on the inner surface (9) of DP (1).

EFFECT: eliminates the possibility of mechanical damage to the cable during installation and operation, the impact of drilling fluid on the cable sections, provides a reliable connection of the connectors of cable sections.

4 cl, 2 dwg