GEAR FOR WORKING FACE ZONE OF BOREHOLE Russian patent published in 1994 - IPC

Abstract RU 2006573 C1

FIELD: oil and gas production. SUBSTANCE: gear for working face zone of borehole has cylindrical body with protrusions, striker suspended inside it on its axis, hinge-driven valve installed on anchored rod below striker. Valve is located in flat duct. Gear is also provided with driving mechanism and thrust unit. Driving mechanism and thrust unit may be of different designs. EFFECT: reduced labour input due to sinking of gear into face of borehole through pump-compressor pipes with geophysical cable without plugging borehole. 1 dwg

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RU 2 006 573 C1

Authors

Pinakov V.I.

Drjab V.N.

Sobolevskij V.N.

Poljakov V.N.

Dates

1994-01-30—Published

1990-12-04—Filed