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方法 采用动态物理模拟、热采储层变化数值模拟、原油性质变化有机地球化学分析和热采储层敏感性评价等新技术 ,分析了储层中的水、油、岩在热采条件下的变化趋势。目的 改善稠油热采开发效果。结果 根据不同热采方式的特点 ,建立了适合储层中热液与矿物之间相互作用的物质迁移—化学反应藕合模型 ,编制了数值模拟软件 ;总结了储层在热采条件下矿物溶解反应的变化趋势 ,以及不同热采条件对储层中各原油微观组分的作用效果。结论 实现了对不同热采条件下储层发生的矿物溶解、沉淀和液体组成改变的预测 ,并提出了改善稠油热采开发效果的措施。
Methods New technologies such as dynamic physical simulation, numerical simulation of thermal reservoir changes, organic geochemical analysis of crude oil properties and sensitivity evaluation of thermal recovery reservoirs were used to analyze the effects of thermal recovery on water, oil and rock in reservoirs Trend. Objective To improve the development of heavy oil thermal recovery. Results According to the characteristics of different thermal recovery methods, a material-migration-chemical reaction coupling model suitable for the interaction between hydrothermal fluids and minerals in reservoirs was established and numerical simulation software was developed. The dissolution of minerals under thermal recovery conditions was summarized The trend of reaction and the effect of different thermal recovery conditions on the micro-components of the crude oil in the reservoir. Conclusion The prediction of mineral dissolution, sedimentation and liquid composition change in reservoirs under different thermal recovery conditions has been realized. Some measures to improve the development effect of heavy oil thermal recovery are proposed.