Fracture reactivation index (FRI) for seal integrity analysis in carbon capture and storage (CCS)
US12312951B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2024 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Apr 26, 2044 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A determination of caprock integrity in naturally fractured reservoirs for fluid injection such as carbon capture and storage (CCS). The caprock integrity and seal integrity is determined via a fracture reactivation index (FRI). A mechanical earth model is determined to quantify the minimum principal in-situ stress in the caprock to determine the injection pressure limits and safeguard against undesired breakthrough into adjacent zones. A fracture model is generated using the mechanical earth model, and a critical stress analysis may be performed. After determination of a fracture density index and Coulomb Excessive Failure Function (CEFF), the fracture reactivation index (FRI) is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.