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2 102 577

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IPC

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Application

95121298/03, 1995-12-19

(22)

Actual filing date

1995-12-19

(45)

Published

1998-01-20

(72)

Inventor

Jumadilov S.A.Sitnikov N.N.Malykhin V.I.Fakhrullin V.I.

(73)

Holder

Regional'Nyj Nauchno-Tekhnologicheskij Tsentr Po Dobyche Bitumov I Vysokovjazkikh Neftej Uralo-Povolzh'Ja Im.A.P.Krylova

DEVICE FOR TREATING DOWN-HOLE ZONE OF WELL Russian patent published in 1998 - IPC

Abstract RU 2102577 C1

FIELD: oil and gas production industry. SUBSTANCE: this relates to cleaning of well by instantaneous pressure pulses in development of oil and gas wells. Device has body with passages, and concentrically installed in body are spring-loaded differential piston and non-return valve, and provided in this non-return valve is seat for differential piston which is telescopically connected with valve. High-power pressure pulses ensure efficient cleaning of productive bed. EFFECT: high efficiency. 1 dwg

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RU 2 102 577 C1

Authors

Jumadilov S.A.

Sitnikov N.N.

Malykhin V.I.

Fakhrullin V.I.

Dates

1998-01-20—Published

1995-12-19—Filed

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