非均质底水油藏水平井水淹规律研究

Water flooding law of horizontal well in heterogeneous bottom water reservoir

以数值模拟技术为手段,通过建立非均质底水油藏水平井概念地质模型,研究了油藏平面及垂向非均质性(不同渗透率级差及高渗带宽度)对水平井水淹规律的影响。研究表明,油藏非均质性对水平井沿程见水点位置及高渗带、低渗带平均日产油量之比等有显著的影响,该项研究对于指导非均质底水油藏水平井的开发具有一定的意义。

In recent years, horizontal wells technology is widely used in the development of the heterogeneous reservoirs. The horizontal wells model at the heterogeneous bottom water reservoir is established and the numerical simulation technology is used to study how the plane and vertical heterogeneity of the reservoir （different permeability differential and high permeability width） can influence the water flooding law in the horizontal wells. The study result shows that reservoir heterogeneity can affect water breakthrough position and average crude output in the high permeability zone. The research has importance in guiding the exploitation of the heterogeneous bottom water reservoir.