Polyhalite composition and method for enhanced recovery of oil
US12371607B2 · kind B2 · utility
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Key dates
| Filing date | Dec 16, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Dec 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/58
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid solution for the recovery of oil from carbonate reservoirs, the solution including a solid chemical composition including Polyhalite in a weight range of 70 to 94.9%, NaCl in a weight range of 5 to 29.9%, and SiO2 in a weight range of 0.1 to 5%, the solid chemical composition being dissolved in water, which may include sea water, diluted sea water, desalinated seawater, produced water, aquifer water, river water, surface water, fresh water, or distilled water, where the solution is prepared by dissolving 1-10 grams of the solid chemical composition per liter of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.