Study on the oil–water two-phase flow characteristics of tight reservoir based on digital core technology
Abstract
Abstract Tight reservoirs are characterized by low porosity, low permeability and complex pore structures, resulting in poor waterflood recovery efficiency. Existing microscale two-phase flow studies are mostly based on two-dimensional geometric models, and the physical mechanism of fluid–solid coupling effect on flow behavior remains insufficiently understood. In this study, a three-dimensional digital core model of real tight sandstone was constructed using CT scanning and digital image processing techniques, and a phase-field mathematical model of oil–water two-phase flow considering bidirectional fluid–solid coupling was established, with its accuracy verified by classical capillary imbibition experiments (maximum relative error
Fields of Study & Subjects
Enhanced Oil Recovery Techniques
Reservoir Engineering and Simulation Methods
Hydrocarbon exploration and reservoir analysis
Publication details
- Journal / source
- Physica Scripta
- Publisher
- IOP Publishing
- Volume
- 101
- Issue
- 38
- Pages
- 385212–385212
- Publication date
- 7 September 2026
- Language
- EN