Method for evaluating geological and engineering sweet spots in unconventional reservoirs based on dual-energy computed tomography (CT)
US11734914B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2023 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Mar 8, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, device, and system for evaluating geological and engineering sweet spots in an unconventional reservoir based on dual-energy computed tomography (CT) comprises acquiring and preprocessing a high-energy CT image and a low-energy CT image of a core from a core region, acquiring and preprocessing a high-energy CT image and a low-energy CT image of a core from a core reference sample, calculating a density and an effective atomic number of each pixel in the core region of a target reservoir, acquiring a geological sweet spot index and an engineering sweet spot index, acquiring evaluation results of geological and engineering sweet spots at different depths of the core region in the target reservoir, and matching the evaluation results to acquire reservoir types corresponding to the different depths of the core region in the target reservoir. The present disclosure achieves accurate and efficient reservoir evaluation and classification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.