Carbon dioxide sequestered proppants for well stimulation
US12421446B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2024 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Sep 11, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/62
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of making a hydraulic fracturing slurry can include contacting an aqueous solution comprising calcium ions with a carbon dioxide source producing a carbonated aqueous solution. Substrate particles can be submerged in the carbonated aqueous solution to produce a calcium carbonate coated proppant wherein the carbon dioxide is sequestered in the calcium carbonate. The calcium coated proppant can be combined with hydraulic fracturing fluid to produce a hydraulic fracturing slurry. Alternatively, the calcium carbonate coated proppant can be combined with silica sand to produce a proppant composition used in a hydraulic fracturing slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.