摘要
基于数值模拟软件,建立了致密气藏多段压裂水平井模型,将切面积法应用到多段压裂水平井泄流面积的研究,并对相关影响参数作了敏感性分析。结果表明:渗透率对泄流面积的影响最为敏感,其次影响较大的有生产压差、裂缝半长、裂缝条数,而裂缝传导率、油藏厚度、孔隙度以及岩石压缩系数等对泄流面积影响微弱。根据以上结论对东北某致密砂岩气藏区块压裂水平井参数作了优化设计,获得了较好的效果。
A tight gas reservoir model with multi-segment fracturing horizontal well is established based on numerical simulation software Eclipse,and the calculation method for the discharge area of the multi-segment fracturing horizontal well in tight sandstone gas reservoir by using area reducing method is presented. The sensitivity of the factors influencing the discharge area is analyzed. The result shows that the influence of the reservoir permeability on the discharge area is the most sensitive,production pressure difference,the half length of fracture and the number of fractures are secondary sensitive factors,and the influence of fracture conductivity,reservoir thickness,reservoir porosity and rock compressibility is little. According to the results above,the parameters of the multi-segment fracturing horizontal wells in some tight sandstone gas reservoir in the northeast of China are optimized,and a good production benefit is obtained, which demonstrates the practicability of this method.
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2014年第1期60-65,7-8,共6页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05016)资助
关键词
切面积法
致密砂岩气藏
多段压裂水平井
泄流面积
数值模拟
area reducing method
tight sandstone gas reservoir
multi-segment fracturing horizontal well
discharge area
numerical simulation
