Title:
OIL-FIELD DEVELOPMENT
Document Type and Number:
WIPO Patent Application WO/2003/106812
Kind Code:
A1
Abstract:
The invention relates to oil production, in particular to a method for oil-field development which makes it possible to extract oil from a collector in difficult geological-tectonic conditions during the late development stage of a gas-liquid fringe which is generated in a formation. An aqueous solution or a carbonate aqueous suspension is injected into said formation. Afterwards, an acidic solution is injected in the formation by portions through a pumping system, said portions being alternated with water which is used as a buffer. The thus produced gas-liquid fringe is pushed along the formation by water, thereby displacing oil from the formation. In order to stabilise a displacement front, prior to injecting a portion of acidic solution, a selective insulation of highly permeable channels is carried out with the aid of a regulated visco-elastic compound starting at least from the second portion.
Inventors:
SHAKHVERDIEV AZIZAGA KHANBABA (RU)
PANAHOV GEYLANY MINHADZH OGLU (AZ)
PANAHOV GEYLANY MINHADZH OGLU (AZ)
Application Number:
PCT/RU2002/000289
Publication Date:
December 24, 2003
Filing Date:
June 13, 2002
Export Citation:
Assignee:
NONCOMMERCIAL PARTNERSHIP INST (RU)
SHAKHVERDIEV AZIZAGA KHANBABA (RU)
PANAHOV GEYLANY MINHADZH OGLU (AZ)
SHAKHVERDIEV AZIZAGA KHANBABA (RU)
PANAHOV GEYLANY MINHADZH OGLU (AZ)
International Classes:
C09K8/58; E21B43/16; (IPC1-7): E21B43/22
Foreign References:
| RU2145681C1 | 2000-02-20 | |||
| RU2142557C1 | 1999-12-10 | |||
| RU1480411C | 1994-10-30 | |||
| US4523642A | 1985-06-18 |
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