时移地震在SAGD蒸汽腔数值模拟中的应用

Application of Time-Lapse Seismic in SAGD Steam Chamber Simulation

针对油藏三维空间动态变化模拟精度较低的难题,运用时移地震约束下的油藏数值模拟方法,模拟稠油热采时油藏蒸汽腔形态三维空间动态变化情况。研究结果表明:时移地震约束下的数值模拟方法可以精细模拟出SAGD蒸汽腔发育形态在三维空间里的动态变化情况,油藏开采历史数据也得到了较好的拟合。油藏观察井测温资料及实际生产数据验证了模拟结果的准确性。研究成果对稠油热采油藏开发调整决策及开发调整方案编制具有指导意义。

Due to the relatively low simulation accuracy of reservoir 3D performance,reservoir numerical simulation with time-lapse seismic constraint is used to simulate the dynamic geometry of steam chamber during thermal recovery in heavy-oil reservoir. Research indicates that the 3D SAGD steam chamber geometry is finely modeled by reservoir numerical simulation with time-lapse seismic constraint and the historical reservoir data is also well matched. The corresponding simulation result is also in good agreement with that of temperature test data in observation well and actual production data. This research could provide certain guidance for the program adjustment and preparation of adjustment program in heavy-oil reservoir with thermal recovery.