Title:
METHOD FOR OIL FIELD DEVELOPMENT
Document Type and Number:
WIPO Patent Application WO/2000/015946
Kind Code:
A1
Abstract:
The present invention pertains to the crude-oil industry and essentially relates to methods for developing oil fields that involve maintaining the field pressure using a water flooding technique. This invention can be used for reducing costs and for increasing the ecological safety of methods for cleaning of bottom hole area from clogging layers of sediments. The sediments are dispersed and dissolved using ultrasounds in an active liquid medium until they form a fine-dispersion hydrophobic suspension having a solid-particle size of between 0.5 and 20 $g(m)m. The suspension thus obtained is pumped into the layer in order to equilibrate the injectivity profile of the injection wells and to reduce water infiltration into the production wells. The active liquid consists of a liquid having a surface tension at the vapour boundary of 20 to 35 mPa.sec?-1¿ (erg/cm?2¿). The density of the fluid is higher by at least 100 kg/m?3¿ than the water density in the water flooding system, while its viscosity may be equal to the viscosity of the aqueous phase but no more than 20 times higher. In the case of wells with low deposit-formation, the active liquid is previously mixed with oil cuttings waste according to a volumetric ratio of 1:10 to 1:5.
Inventors:
POZDNYSHEV GENNADY NIKOLAEVICH (RU)
MANYRIN VYACHESLAV NIKOLAEVICH (RU)
DOSOV ALEXANDR NIKOLAEVICH (RU)
SAVELIEV ALEXANDR GEORGIEVICH (RU)
MANYRIN VALERY NIKOLAEVICH (RU)
MANYRIN VYACHESLAV NIKOLAEVICH (RU)
DOSOV ALEXANDR NIKOLAEVICH (RU)
SAVELIEV ALEXANDR GEORGIEVICH (RU)
MANYRIN VALERY NIKOLAEVICH (RU)
Application Number:
PCT/RU1998/000423
Publication Date:
March 23, 2000
Filing Date:
December 21, 1998
Export Citation:
Assignee:
POZDNYSHEV GENNADY NIKOLAEVICH (RU)
MANYRIN VYACHESLAV NIKOLAEVICH (RU)
DOSOV ALEXANDR NIKOLAEVICH (RU)
SAVELIEV ALEXANDR GEORGIEVICH (RU)
MANYRIN VALERY NIKOLAEVICH (RU)
MANYRIN VYACHESLAV NIKOLAEVICH (RU)
DOSOV ALEXANDR NIKOLAEVICH (RU)
SAVELIEV ALEXANDR GEORGIEVICH (RU)
MANYRIN VALERY NIKOLAEVICH (RU)
International Classes:
E21B43/00; E21B43/16; (IPC1-7): E21B43/16; E21B28/00; E21B37/06; E21B43/25
Foreign References:
| RU94023110A1 | ||||
| RU2024741C1 | 1994-12-15 | |||
| RU2026969C1 | 1995-01-20 | |||
| RU2047746C1 | 1995-11-10 | |||
| US3530939A | 1970-09-29 | |||
| US4280558A | 1981-07-28 | |||
| US4817712A | 1989-04-04 | |||
| US5184678A | 1993-02-09 |
Attorney, Agent or Firm:
Pozdnyshev, Gennady Nikolaevich (187-66 Samara, 1, RU)
Pozdnyshev, Gennady Nikolaevich (187-66 Samara, 1, RU)
Pozdnyshev, Gennady Nikolaevich (187-66 Samara, 1, RU)
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