JUNK BASKET Russian patent published in 1995 - IPC

Abstract RU 2049221 C1

FIELD: drilling of gas and oil wells. SUBSTANCE: plug of implosive branch pipe is rigidly connected with its lower end. Inlet channel is made in cover of cylindrical branch pipe. Shutoff member is made in form of circular cylinder installed on outer surface of cover and locked relative to core by means of shear pin. Inlet channel of implosive chamber is communicated in working position with case space above covering unit of its lower part. EFFECT: higher operate reliability and creased efficiency. 3 dwg

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RU 2 049 221 C1

Authors

Rybolovlev V.P.

Khajrullin B.Ju.

Vitjazev O.L.

Snigirev V.N.

Dates

1995-11-27—Published

1992-11-11—Filed