Sequestration of carbon in saline aquifers
US11946344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2022 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jul 14, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for subsurface sequestration of carbon includes injecting a treatment composition comprising a mineralization accelerant into a subterranean zone at least partially saturated with saline water. The mineralization accelerant is reactive with carbon dioxide to form bicarbonate. The method further includes injecting carbon in the form of carbon dioxide into the subterranean zone and sequestering at least a portion of the carbon in the subterranean zone by precipitation in the subterranean zone of a carbonate mineral formed from reaction of the bicarbonate with metal cations dissolved in the saline water. At least a portion of the bicarbonate is formed by reaction of the mineralization accelerant with the carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.