论文部分内容阅读
对压裂水平井的大部分传统研究认为,其产能计算问题可转化为一种“基质—裂缝—井筒”的双重介质模型,即认为地层中的流体先全部流入裂缝,再沿裂缝流入井筒。根据文献[9]的研究成果,对于水平段为裸眼的压裂水平井,这一假设并不符合事实。本文以国际上使用较多的Guo&Evans的裸眼压裂水平井产能模型[1]为基础,分析了它的未全部贯穿油藏的压裂水平井拟稳态产能解,并讨论在水平井的总产量当中,水平段和裂缝各自所占的比例。
Most of the traditional research on fractured horizontal wells holds that the problem of capacity calculation can be transformed into a dual medium model of “matrix-fracture-wellbore”, that is, the fluid in the formation first flows into the fracture and then flows along the fracture Wellbore. According to the research results in reference [9], this assumption is not true for fractured horizontal wells with open-hole in horizontal section. Based on Guo & Evans’ open-hole fractured horizontal well productivity model [1], which is widely used in the world, the quasi-steady-state productivity of fractured horizontal wells not fully penetrated through reservoirs is analyzed. Production, the horizontal section and the proportion of cracks each.