具有多条压裂裂缝双重介质油藏压力动态分析  

Dynamic Analysis on Pressure in Reservoirs with Multi-fractures and Dual Media

作　　者：何应付[1,2] 高慧梅[3] 

机构地区：[1]西南石油大学博士后科研流动站,四川成都610500 [2]大庆油田博士后科研工作站,黑龙江大庆163712 [3]大庆油田有限责任公司勘探开发研究院开发二室,黑龙江大庆163712

出　　处：《石油天然气学报》2009年第3期130-133,共4页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(10672187)

摘　　要：高能气体压裂和脉冲压裂能在近井地带形成多条径向裂缝体系,因此针对无限大双重介质油藏建立了具有多条压裂裂缝的垂直裂缝井试井分析新模型,获得了解析解。双重介质油藏多裂缝压裂井典型曲线可以划分为5个部分:压裂裂缝线性流段、早期过渡段、外区裂缝径向流段、外区裂缝和基质之间的窜流过渡段和外区拟径向流段。两区扩散比(γ)和两区裂缝导流能力比(β)主要影响早期压裂裂缝线性流段和早期过渡段;储容比(ω)既对早期压裂裂缝线性流段和早期过渡段存在影响,也对外区裂缝和基质之间的窜流过渡段存在较大影响。High energy-gas fracturing and impulse fracturing could be used to produce radial and multi-fracture system. Therefore in allusion to infinite media, a new model for vertical fracture welltest where there existed multi-fractures was established and analytical solution was obtained. The typical curves of multi-fracturing wells with dual media could be divided into 5 parts; such as linear flow section of fracturing fractures, early transition section, radial-flow section of fracturing in external area and channeling transition section between the external fractures and matrix and external pseudo-radial flow section. The dispersing ratio and flow conductivity mainly influence the linear flow and early transitional section; reserves ratio influence the linear flow and early transitional section, also influence channeling transition section between the external fractures and matrix.

关 键 词：压裂裂缝 双重介质 垂直裂缝 压力动态 试井 典型曲线 

分 类 号：TE353[石油与天然气工程—油气田开发工程]