Methods for paraffin removal and extended post-primary oil recovery
US11447684B2 · kind B2 · utility
2Cited by
28References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Aug 20, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The subject invention provides a three-part method for increasing the amount of oil recovered from an oil well, the method comprising (1) paraffin removal; (2) gas release; and (3) plugging. The combination of parts provides for enhanced oil recovery over an extended period of time, for example two weeks or longer. In preferred embodiments, the subject invention utilizes microorganisms and/or their growth by-products, as well as other environmentally-friendly compounds, to enhance oil recovery by removing paraffin deposits from a well and providing controlled production of carbon dioxide in the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.