Method and system for predicting time-varying principle of waterflooding oil reservoir formation parameters
US12012832B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2023 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Jul 26, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to a method and system for predicting a time-varying principle of waterflooding oil reservoir formation parameters. Firstly, a T2 spectrum-pore size relation model is built according to a measured pore size distribution curve and a measured T2 spectrum. A T2 spectrum of a rock sample at different water injection amounts during a waterflooding physical simulation experiment is acquired. The acquired T2 spectrum at different water injection amounts is then converted into a pore size distribution at different water injection amounts, and a pore network model at different water injection amounts is built with the pore size distribution. Oil-water two-phase flow simulation is performed, and a corresponding oil-water two-phase relative permeability curve of the rock sample at different pore volume (PV) multiples is obtained eventually. The oil-water two-phase relative permeability curve is the formation parameters in the waterflooding oil reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.