一种量化不同机理对提高气藏采收率贡献程度的表征方法
By constructing an equivalent long core and conducting multi-step experiments to decouple the coupling mechanism, the contribution of pressurization, physical displacement, and competitive adsorption in carbon dioxide displacement is quantified, solving the problem of inaccurate quantification in existing technologies and providing quantitative support for gas reservoir injection development.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST PETROLEUM UNIV
- Filing Date
- 2026-04-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot objectively and accurately quantify the independent contribution of the three major mechanisms of carbon dioxide displacement in enhancing natural gas recovery: pressurization and energy replenishment, physical displacement, and competitive adsorption. This results in a lack of rigorous quantitative support for optimizing gas reservoir injection schemes and selecting the best gas source medium.
By constructing an equivalent long core, a three-step experiment was conducted to decouple the coupling mechanism: natural pressure exhaustion experiment, static pressurization and re-exhaustion experiment, and continuous gas injection displacement experiment. Combined with rock powder adsorption experiment, the contribution of each mechanism was measured and calculated using a preset formula.
It enables independent quantification of pressurization and energy replenishment, physical displacement and competitive adsorption mechanisms, improves the accuracy and reliability of mechanism quantification, and provides rigorous quantitative support for gas reservoir injection development.
Smart Images
Figure CN121995014B_ABST