METHOD FOR HYDROPRECUSSION EFFECT ON OIL WELL BOTTOM ZONE Russian patent published in 1997 - IPC

Abstract RU 2072035 C1

FIELD: oil production. SUBSTANCE: diaphragm is installed in production tubing. Fluid level is increased in drill string- borehole annulus until diaphragm is ruptured. Compressed gas under pressure is used to force back the fluid. Then pressure is increased inside the production tubing and the diaphragm is ruptured. Then pressure is decreased suddenly in the drill string-borehole annulus. Besides, additional diaphragm is installed in production tubing below the main one. The cavity between the diaphragms is sealed. Additional diaphragm is calculated to rupture by hydraulic hammer. EFFECT: higher efficiency. 2 cl, 2 dwg, 1 tbl

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RU 2 072 035 C1

Authors

Rubinshtejn O.I.

Dates

1997-01-20—Published

1994-01-31—Filed