Method for reducing or completely stopping the influx of water in boreholes for the extraction of oil and/or hydrocarbon gas
US5346013A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Apr 12, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/5753
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a method for reducing or completely stopping the influxes of water of a deposit in at least a portion of a borehole for the extraction of oil and/or hydrocarbon gas, which traverses a deposit, a solution of a polymer being introduced, starting from the borehole, into that portion of the deposit in which the influxes of water are to be reduced or stopped, and the bore subsequently being put into service for the extraction of oil and/or hydrocarbon gas, the fluids present in the deposit coming into contact with said portion of the deposit containing the polymer and the oil and/or hydrocarbon gas flowing through said portion of the deposit and reaching the borehole, wherein the non-aqueous solution of a hydrophobic, water-insoluble polymer is introduced into the deposit and the polymer precipitates in the presence of the connate water of the deposit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.