CASED WELLS TECHNICAL CONDITION CONTROLLING DEVICE Russian patent published in 2010 - IPC E21B47/00 E21C39/00 

FIELD: oil-and-gas industry.

SUBSTANCE: device contains filled di-lectical case with a pressure compensator, top and bottom centralisers, electrical block, rotor with rotation drive, proximity sensor, located in a safety jacket with ability of actuator arm radial reciprocating displacement at movement transition from an additional drive and mounted at the rotor end, outgoing from the rotors bottom though a sealed end hole and a surface equipment; equipped with a slide connected to the jacket, installed on a cylindrical guide, which has anti-cranking unit, at that the cylindrical guide executed as a tightening telescopic connection of two counter invented with necks barrels, forming connected to the case and the jacket cylindrical cavity, where the actuator execute as a screw type gear located, which interacts with barrels bottoms, one of which stiffly connected with the rotor, and other one - with the slide.

EFFECT: design simplification, reliability increase, extended capabilities, axial dimensions and weight decrease.

6 cl, 3 dwg