Methods for hydrocarbon recovery
US10626320B2 · kind B2 · utility
6Cited by
34References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2016 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Sep 23, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.