Method for predicting oil accumulation depth limit of deep and ultra-deep marine carbonate reservoirs
US11435494B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2022 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/6244
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method, system and device for predicting an oil accumulation depth limit of deep and ultra-deep marine carbonate reservoirs is provided. The method includes: obtaining geological factors acting on a porosity of a deep/ultra-deep marine carbonate reservoir, standardizing absolute values of the geological factors; calculating a porosity of the deep/ultra-deep marine carbonate reservoir; acquiring ratios of oil, water and dry layers in each M % porosity interval, and acquiring a relationship between a dry layer ratio and the porosity of the deep/ultra-deep marine carbonate reservoir; recursively obtaining a relationship between the dry layer ratio and the burial depth and determining the oil accumulation depth limit of the deep/ultra-deep marine carbonate reservoir. The method, system and device solves the problem that the prior art cannot by predicting the oil accumulation depth limit directly through the relationship between the dry layer ratio and the depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.