COMMUNICATION LINE OF WELL-BOTTOM MONITORING TELEMETRIC SYSTEM IN COURSE OF DRILLING PROCESS Russian patent published in 1998 - IPC

FIELD: communication lines as telemetric means for transmitting of information signals from well bottom to surface. SUBSTANCE: communication line has wire communication channel built in drill pipes. Wire communication channel is connected with electric contact communication members located on joint pin and box of drill pipes on which centralizers are mounted. Centralizer of drill pipe pin has spring engageable with members of electric contact communication made in form of collet brushes and installed in the same place. Electric contact communication members installed in drill pipe box are made in form of rings and rest on end face of own centralizer with the help of stop nut. Wire communication channel is connected with nut for adjusting its length. Such a design of communication line allows transmission of information in turbine and rotary drilling with use of drill pipes with diameter from 73 mm and above with no field changes. EFFECT: higher efficiency. 3 dwg