二氧化碳驱油及封存过程中的地质安全界限体系

发布时间：2018-07-02 09:03

  本文选题：CO_驱油 + CO_封存　； 参考：《特种油气藏》2017年02期

【摘要】：针对CO_2驱油及封存过程中的地质安全问题,利用油气封盖理论和油藏工程理论,研究了油藏条件下CO_2驱油及封存的定量地质安全界限体系。研究结果表明:CO_2驱油及封存过程可划分为CO_2注入驱油阶段、CO_2注入封存阶段和CO_2静态封存阶段;CO_2在油藏条件下存在扩散泄漏、低速渗流泄漏和高速渗流泄漏3种泄漏机理;CO_2的地质安全性主要受盖层岩封堵压力、断层岩封堵压力、断层重开启压力、断层岩破裂压力及盖层破裂压力等的控制。研究成果对CO_2驱油及封存项目的选址及风险分析有重要意义。
[Abstract]:Aiming at the geological safety problems in the process of oil displacement and storage of CO-2, the quantitative geological safety limit system of CO-2 flooding and sealing under reservoir conditions is studied by using the theory of oil and gas sealing and reservoir engineering. The results show that the process of oil displacement and storage can be divided into two stages: CO-2 injection and oil displacement stage, COSP _ 2 injection and storage stage and CO-2 static storage stage, and the diffusion leakage exists in the reservoir conditions. The geological safety of CO _ 2 is mainly controlled by the sealing pressure of caprock, the re-opening pressure of fault, the fracture pressure of fault rock and the fracture pressure of caprock. The research results are of great significance to the location and risk analysis of CO2 oil displacement and storage projects.
【作者单位】： 中国石化胜利油田分公司;
【基金】：“十二五”国家科技支撑计划“大规模燃煤电厂烟气CO_2捕集、驱油及封存技术开发及应用示范”(2012BAC24B03)
【分类号】：TE357.7
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本文编号：2089619