HYDROMONITORING ASSEMBLY OF SLIT PERFORATOR Russian patent published in 2004 - IPC

FIELD: oil extractive industry.

SUBSTANCE: device has lower piston of cylinder force block, washing channel with valve assembly, hydromonitoring channel connected to hydromonitoring headpiece, extending cantilever. In the latter at center the washing channel is placed connected in transporting position to outer space of perforator and one or more hydromonitoring channels placed between inner side of tension spring and valve assembly of washing channel along perimeter of circle with center on piston axis, located near input of hydromonitoring headpiece. The latter has body and hard-alloy conical bushing with variable cross-section of pass-through channel fixed n this body by a spring ring. Body with sides for wrench and mounting thread by means of knife compaction is water-tightly placed in the body of cantilever at angle to axis of perforator providing for direction of hydromonitoring jet into slit of casing column. Valve assembly of washing channel is equipped with replaceable hard-alloy double-sided saddle for throwing locking member. Lower end of cantilever is provided with support surface for rotating links extending threading roll. Also the axis connecting these to the cantilever and receiving reactive force from hydromonitoring jet is placed in grooves parallel to axis of perforator and is prevented from radial displacement by other removable plates placed on outer side of supporting plates. Surface of console in contact with inner wall of perforator body has cylindrical surface diameter of which equals inner diameter of this body.

EFFECT: higher effectiveness of hydromonitoring destruction of rock along slit and higher efficiency of hydromonitoring assembly of slit perforator.

4 dwg