靖安油田五里湾一区大型压裂低渗油藏数值模拟研究

鄂尔多斯盆地油藏以低渗油藏为主，对低渗油藏进行油藏数值模拟是目前的难点，经过大型整体压裂的低渗油藏数值模拟有其特殊性。针对鄂尔多斯盆地的低渗特点，以靖安油田五里湾一区为例，在油藏数值模拟中，结合试井资料，并根据等值渗流阻力法原理对近井地带地层渗透率作合理调整，采用等连通系数法原理对井间连通性修正技术和局部网格加密技术来模拟水力压裂时产生的压裂裂缝．从而达到较好的动态资料拟合效果。在历史拟合的基础上进行油田不同生产规模和不同注采比开发技术政策界限的研究，设计了合理的开发技术政策，对油田开发生产起到了很好的指导作用。

Numerical simulation of large-scale fracturing low permeability reservoirs in Jing'an Oilfield

Aimed at the characteristics of the low permeability reservoirs in Wuliwan area in Jing＇an Oilfield of Ordos Basin, the reservoir permeability around the well bottom hole is reasonably adjusted on the basis of well test data and the equivalent percolation resistance law. According to the equivalent connectivity factor method, the fractures produced by the hydraulic fracturing measure are simulated by using interwell communication correction technique and local grid refinement technique. The production technology policies about different production rates and different ratios between injections and productions are studied, and reasonable production technology policies are designed, which provides guidance to the oilfield development.