泥页岩裂缝性储层类型复杂,且物性差,孔隙度和渗透率低,孔喉细小,溶蚀孔和裂缝发育,敏感性强。考虑应力敏感和启动压力梯度,对二开一关测试过程进行了数值模拟,分别模拟计算了15个压差情况下地层渗透率分布和井底压力曲线,根据井底压力与流入井筒流量之间关系,对流入井筒量进行了折算,得到了收集油量。给出合理测试压差范围,对同类储层开发具有借鉴意义。 Mud shale fractured reservoirs are complex types with poor physical properties, low porosity and permeability, small pore throats, well-developed pores and fractures, and high sensitivity. Considering the stress sensitivity and the start-up pressure gradient, the numerical simulation of the second on-off test was carried out. The distribution of formation permeability and bottom hole pressure curve under 15 pressure differences were simulated respectively. According to the difference between bottom hole pressure and inflow wellbore flow rate Relationship, the amount of inflow into the wellbore has been converted, has been collected oil. Given a reasonable range of test pressure, it has reference significance for the development of similar reservoirs.