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1. (WO1991007569) METHOD FOR FINISHING A WELL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007569 International Application No.: PCT/SU1989/000286
Publication Date: 30.05.1991 International Filing Date: 17.11.1989
IPC:
E21B 33/138 (2006.01) ,E21B 37/00 (2006.01) ,E21B 41/00 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
33
Sealing or packing boreholes or wells
10
in the borehole
13
Methods or devices for cementing, for plugging holes, crevices, or the like
138
Plastering the borehole wall; Injecting into the formation
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
37
Methods or apparatus for cleaning boreholes or wells
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
41
Equipment or details not covered by groups E21B15/-E21B40/95
Applicants:
MINISTERSTVO GAZOVOI PROMYSHLENNOSTI SSSR [SU/SU]; ul. Stroitelei, 8-1 Moscow, 117939, SU (AllExceptUS)
POLYAKOV, Vladimir Nikolaevich [SU/SU]; SU (UsOnly)
MAVLJUTOV, Midkhat Rakhmatullich [SU/SU]; SU (UsOnly)
BAIRAKOV, Marat Nilovich [SU/SU]; SU (UsOnly)
GORONOVICH, Sergei Nikolaevich [SU/SU]; SU (UsOnly)
AGLIULLIN, Akhtyam Khalimovich [SU/SU]; SU (UsOnly)
AKBULATOV, Iskander Timurovich [SU/SU]; SU (UsOnly)
Inventors:
POLYAKOV, Vladimir Nikolaevich; SU
MAVLJUTOV, Midkhat Rakhmatullich; SU
BAIRAKOV, Marat Nilovich; SU
GORONOVICH, Sergei Nikolaevich; SU
AGLIULLIN, Akhtyam Khalimovich; SU
AKBULATOV, Iskander Timurovich; SU
Agent:
THE USSR CHAMBER OF COMMERCE AND INDUSTRY; ul. Kuibysheva, 5/2 Moscow, 103735, SU
Priority Data:
Title (EN) METHOD FOR FINISHING A WELL
(FR) PROCEDE DE FINITION D'UN PUITS
Abstract:
(EN) The invention relates to methods of drilling oil and gas wells. The method provides for sealing of permeable beds with hydromonitored jets of the drilling mud. In the intervals of non-productive intercalations the walls of the well are subjected to unsealing and to subsequent sealing at a speed of the hydromonitored jets which exceeds their speed during the initial colmatage. The invention may be used, in particular, for isolation of low-permeable rocks where the desired effect cannot be obtained by traditional methods for isolation of such rocks.
(FR) L'invention concerne des procédés de forage de puits de pétrole et de gaz. Le procédé permet de colmater les couches perméables à l'aide de jets hydrocontrôlés de boue de forage. Dans les intervalles non producteurs, les parois du puits sont soumises à un décolmatage et à un colmatage ultérieur à une vitesse des jets hydrocontrôlés qui dépasse la vitesse du colmatage initial. Le procédé de l'invention peut être utilisé en particulier pour isoler une roche de faible perméabilité, où l'effet souhaité ne peut être obtenu par les procédés traditionnels d'isolation.
Designated States: NO, US
European Patent Office (AT, BE, CH, DE, ES, FR, GB, IT, LU, NL, SE)
Publication Language: Russian (RU)
Filing Language: Russian (RU)