DEVICE FOR BOTTOM-HOLE THERMAL REGULATION OF WATER INJECTED INTO BED Russian patent published in 2000 - IPC

FIELD: oil production industry. SUBSTANCE: device can be used in development of deposits with high-viscous solidifying oil featuring high content of paraffin. Device has production string of pipes, pump-compressor pipes, well head equipment. Installed in lower part of pump-compressor pipes is control member with body and inlet holes which are rigidly connected and communicated with bellows and vessel. Vessel is filled with thermally-resilient substance and is provided with valve unit and seat. Valve unit with seat is located under bellows. One end of valve unit is rigidly connected with body. Rod for interaction with valve unit seat is located between bellows and valve unit seat and is rigidly connected with movable end of bellows. Device is provided with charging unit, also with non-return valve and head-piece with outlet holes. Vessel is made spring-biased relative to body. Lower end of bellows is rigidly connected with body. Upper end of bellows is movable and is rigidly coupled to rod for possible opening of valve unit seat when bellows is elongated and for closing of valve unit seat when bellows is shortened. Spaces of bellows and vessel are filled with thermally-resilient substance. Aforesaid embodiment of device ensures bottom-hole thermal regulation of water injected into bed within preset automatic operation duty. EFFECT: higher efficiency. 2 dwg