METHOD FOR EXPLOITING A GAS-LIFT WELLBORE AND DEVICE FOR REALISING THE SAME

WIPO Patent Application WO/2000/079096

A1

The present invention pertains to the field of gas and crude oil extraction, relates to a compressor-free gas-lift extraction method and can be used in the exploitation of gas-lift wellbores mainly in the far North. Gas is supplied into the crude oil wellbore directly from the gas wellbore using a gas duct that comprises a heater provided along the length thereof. The temperature of the inner surface of the gas duct is maintained above the hydrate-formation temperature from any component of the gaseous medium within a working range of the gas parameters. The temperature of the gas before the gas flow controlling device is maintained at a level T $m(G) (T¿1? + $g(D)t) where T¿1? is the highest temperature of hydrate formation from the gas components while $g(D)t is the temperature drop at the gas flow controller. The above-mentioned thermal modes rule out all conditions of hydrate formation during the crude-oil gas-lift extraction.

BASHUROV VALERY VITALIEVICH (RU)
GOLOD VLADISLAV VIKTOROVICH (RU)
GORBACHOV VLADIMIR ANDREEVICH (RU)
MININ VLADIMIR IOSIFOVICH (RU)
PYATKIN NIKOLAI NIKOLAEVICH (RU)

PCT/RU1999/000201

December 28, 2000

June 17, 1999

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BASHUROV VALERY VITALIEVICH (RU)
GOLOD VLADISLAV VIKTOROVICH (RU)
GORBACHOV VLADIMIR ANDREEVICH (RU)
MININ VLADIMIR IOSIFOVICH (RU)
PYATKIN NIKOLAI NIKOLAEVICH (RU)

E21B36/00; E21B43/12; E21B41/00; (IPC1-7): E21B43/00; E21B43/12

US4738313A	1988-04-19
RU2070277C1	1996-12-10
SU1794180A3
RU2051202C1	1995-12-27
US4154297A	1979-05-15

BURSHTEIN M.A. ET AL.: "Novoe v primeneii gasliftnogo sposoba exspluatatsii neftyannykh skvazhin", TNTO, SERYA DOBYCHA, M., VNIIOENG, 1974, pages 4 - 5, 6-10, 54-58

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