油田伴生气辅助化学驱的稠油增产方法和在稠油油藏开采中的应用
By using associated gas-assisted chemical flooding, utilizing gas viscosity reduction and the Jamin effect to suppress cross-flow, and combining a polymer-surface binary system to optimize sweep efficiency, the problems of high cost and poor stability of chemical flooding in high water-cut heavy oil reservoirs have been solved, achieving a highly efficient heavy oil production enhancement effect.
CN122040076BActive Publication Date: 2026-07-17CHINA UNIV OF PETROLEUM (BEIJING)
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (BEIJING)
- Filing Date
- 2026-02-27
- Publication Date
- 2026-07-17
Smart Images
Figure CN122040076B_ABST
Abstract
本发明涉及石油开采提高采收率技术领域，公开了一种油田伴生气辅助化学驱的稠油增产方法和在稠油油藏开采中的应用。该方法包括：（1）在符合油藏条件的目标区块中部署注采井网；（2）注入油田伴生气作为前置降粘段塞，接着注入聚表二元体系作为主段塞；并按照该注入顺序将所述油田伴生气和所述聚表二元体系进行循环注入；所述循环注入的次数依据实时注采压差以及产出液的含水率进行确定；（3）进行后续水驱，并将所述油田伴生气进行回收处理与循环回注。本发明对于高含水的稠油油藏以及三次采油阶段的稠油油藏具有突出的驱替效果和较强的适应性。
Need to check novelty before this filing date? Find Prior Art