Method for recovering porosity evolution process of sequence stratigraphy of carbonate rocks
US11487045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2022 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jan 19, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0846
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure provides a method for recovering a porosity evolution process of sequence stratigraphy of carbonate rocks. The method comprises: a step of establishing a sequence stratigraphic framework of carbonate rocks; a step of dividing diagenetic stages; a step of simulating diagenesis and porosity evolution with increasing reservoir thickness and continuous superposition of multiple reservoirs during cyclic rise and fall of sea level to obtain a simulation result; and a step of calculating the porosity evolution in space over time by using the simulation result as initial values for simulation of diagenetic evolution process and simulating in stages and continuity the multi-stage diagenetic evolution process that the carbonate rock strata undergo after sediment based on the divided diagenetic stages. Compared with the traditional recovery of single reservoir porosity with time evolution, the method fully considers the superposition effect of multiple upper reservoirs in the process of reservoir sedimentary-diagenesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.