中文摘要：

在研究分析水力压裂对储层岩石力学特性参数影响的基础上,提出一种压力储层应力场分布模拟计算方法。通过建立水平井储层原地应力场模型和水力压裂产生人工裂缝诱导应力场模型,并且利用实际的水力压裂测井参数对储层原地应力场和压裂产生裂缝诱导应力场分布进行了模拟计算。模拟计算结果表明,压裂产生人工裂缝会对储层应力场分布造成很大影响;压裂后储层应力主要在裂缝周围得到积累,并且距离裂缝越远,应力值积累越少;压裂生成裂缝长度也会影响储层应力场分布,裂缝越长,裂缝诱导应力场减小越慢。

英文摘要：

Based on the analysis of the influences of hydraulic fracturing on the mechanical parameters of reservoir rocks,a simulation method is proposed to calculate the stress field distribution. By estalishing the in-situ stress field model and hydraulic fracturing induced stress field model of horizontal wells,and using the hydraulic fracturing logging parameters of actual reservoir,the stress field distribution induced by fracturing cracks is calculated. The simulation results show that fracturing induced artificial cracks have a great influence on the reservoir stress field distribution; reservoir stress after fracturing mainly accumulates around the cracks,the farther it is away from the cracks,the less the stress accumulates; the fracture length also affects the distribution of reservoir stress field,the longer the crack is,the slower the crack induced stress field decreases.