CONNECTION DEVICE TO CONNECT TELEMETERING SYSTEM RADIATOR WITH DOWN-HOLE INSTRUMENT Russian patent published in 2006 - IPC E21B47/12 

FIELD: oil and gas well drilling and operation, particularly to transmit down-hole information.

SUBSTANCE: connection device comprises body made as sub with transversal and longitudinal orifices in sub body. The sub is connected with radiator and provided with centering means fixed from axial and radial displacement in the sub. The centering means has cavity and radial ribs. Orifice mating transversal sub orifice is created in one rib. Transmitting coil lead extends through longitudinal and transversal sub orifices and through orifice made in centering means rib and is linked to down-hole instrument connector. Transversal sub orifice is sealed with plug from outer orifice side. The plug is provided with sealing collar. To restrict centering means from axial and radial displacement hollow bush may be used. Hollow bush is inserted in transversal orifice made in centering means rib. The orifices and centering means may be filled with sealant.

EFFECT: provision of signal passage through screening layers having high passability and via casing pipe string.

3 cl, 1 dwg