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2 137 898

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C1

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IPC

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Application

98100150/03, 1998-01-08

(22)

Actual filing date

1998-01-08

(45)

Published

1999-09-20

(72)

Inventor

Ishkaev R.K.Gabdullin R.G.Strakhov D.V.Osnos V.B.

(73)

Holder

Aktsionernoe Obshchestvo Tatarskij Nauchno-Issledovatel'Skij I Proektnyj Institut Nefti

BAILER FOR INSTALLING SEPARATING BRIDGES IN WELL Russian patent published in 1999 - IPC

Abstract RU 2137898 C1

FIELD: oil and gas production industry. SUBSTANCE: bailer can be used for installing separating bridges so as to isolate productive horizons and sections of well from each other. Bailer has body, sealing member, tie-rod, and shear pin. Bailer is provided with slip sockets having wedge-like pushers located inside space of body. Tie-rod is made in the form of bar which is stepped along cross-section. Parts of bar with different cross-sections can interact with wedge-like pushers. Sealing member is made in the form of tapered pusher with elastic collar. Tapered pusher can interact with tie-rod by means of shear pin. Application of aforesaid embodiment of bailer improves safety of operations performed in well, reduces cost of isolating well hole by means of cement plug due to low expenses of performing needed operations. EFFECT: higher efficiency. 1 dwg

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RU 2 137 898 C1

Authors

Ishkaev R.K.

Gabdullin R.G.

Strakhov D.V.

Osnos V.B.

Dates

1999-09-20—Published

1998-01-08—Filed

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