低渗透率油藏压裂直井开发数值模拟研究

目的：对压裂直井产能分析，为高效益开发低渗油藏提供依据。方法：①建立压裂直井生产特性地质模型，在数值模拟基础上对压裂直井的裂缝长度和导流能力与累积产油量关系、供油面积的影响因素、地层渗透率的变化对产量的影响因素进行量化分析；②压裂直升与水平井开发效果对比。结果：影响压裂直升产能因素包括水力裂缝长度、导流能力，地层渗透率和供油面积，对某一特定油藏，这些参数都有一个使产能达到最高的界限值。结论：低渗油

Numerical Simulation of Vertical Well in Low Permeability Reservoir

In this paper, factors affecting the productivity of fractured vertical wells are discussed, in-cluding formation permeability, hydraulic fracture length, hydraulic fracture conductivity and drainage area. The productivity of fractured vertival well, compared with un fractured vertical well, can be obtained from the tem-plate map concluded from numerical reservoir simulation data. And also, productivity of fractured vertical well and unfractured horizontal well is analyzed.