Enhanced oil recovery method with single well huff and puff and inter-segment oil displacement after horizontal well fracturing
US11352866B1 · kind B1 · utility
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Key dates
| Filing date | Feb 5, 2021 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Feb 5, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/26
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An enhanced oil recovery method includes: screening out implementation well that meet the requirements of a preset standard; selecting the target interval that can be used for enhanced oil recovery in the implementation well; obtaining the reservoir parameters and perforation parameters of the target interval, so as to divide the target interval into several groups of swallowing and exhaling segments, injecting the infection liquid containing and simmer the well for a period of time; and after the well simmering, the oil-water mixture replaced by the injection fluid is produced from each exhaling segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.