基于交互流动模型的裂缝性介质流动模拟研究

FLOW SIMULATION OF FRACTURED MEDIA BASED ON INTERACTIVE FLOW MODE

在对存在窜流的裂缝孔隙型油藏进行动态预测时,传统的思路是通过数值模拟的方法进行求解。但是这种方法需用大量的历史生产数据和地层资料,相当费时费力。以离散裂缝网络模型为基础,通过理论方法先求解出单裂缝中油水前缘压力的解析解,再给出求解单裂缝中压力与速度分布的方法,最后将单裂缝的理论应用到多裂缝,求出含多条平行裂缝下出口端的含水率和裂缝中的含油饱和度。此研究对裂缝性油藏的开发具有一定的指导意义。

To predict the performance of fractured-porous oil reservoir in which crossflow exists,numerical simulation is often adopted.However,it is time-consuming and hard because a large amount of historical production and formation data is required.Based on discrete fracture network model,the analytic solution of oil-gas frontal pressure in single fracture is firstly obtained by theoretical method,then a solution to pressure and velocity distribution is provided,finally the theory of single fracture to multiple fractures is applied to obtaining water content at bottom outlet and oil saturation of multiple parallel fractures.These achievements can be guidance in developing fractured oil reservoir.