致密油藏直井体积压裂储层改造体积的影响因素  

Influencing factors of stimulated reservoir volume of vertical wells in tight oil reservoirs

作　　者：王文东 苏玉亮 慕立俊[2] 唐梅荣[2] 高丽[3] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580 [2]长庆油田油气工艺研究院,陕西西安710021 [3]中国石油辽河油田分公司,辽宁盘锦124010

出　　处：《中国石油大学学报（自然科学版）》2013年第3期93-97,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中石油重大科技专项(2008E-1305);泰山学者建设工程专项(TS20070704)

摘　　要：基于三叠系长7致密储层地质特征建立直井典型缝网模型,利用数值模拟方法对体积压裂与常规压裂的开发效果进行对比,模拟不同缝网形态、裂缝间距及导流能力对体积压裂储层改造体积(VSR)的影响。结果表明:体积压裂改造方式能够改善油藏的渗流环境,增加储层动用程度,大幅度提高单井产能;储层改造体积越大,压后产量越高;相同改造体积下,开发效果与井筒连通的有效裂缝体积密切相关;裂缝间距及主、次裂缝导流能力对储层改造体积的影响较大。The typical fracture network models of vertical well were established based on Triassic Chang 7 tight reservoirs char- acteristics. The development effects of networks fracturing and regular fracturing numerical simulation models were compared. The effects of different fracture network pattern, fracture spacing and fracture network conductivity on stimulated reservoir vol- ume（ VSR ） were discussed. The result shows that network fracturing could change the seepage environment, increase reservoir producing extent, and improve well performance greatly. The higher stimulated reservoir volume is created, the higher produc- tion is. When the VSR is an constant, the development effect is closely related to fracture volume which is the volume of fracture connecting well bore. The fracture spacing and fracture network conductivity have a significant impact on VSR.

关 键 词：致密油藏 储层改造体积 缝网形态 导流能力 

分 类 号：TE348[石油与天然气工程—油气田开发工程]