摘要
低渗透油藏的大型整体压裂数值模拟是目前数值模拟的难点,这是由水力压裂后油藏描述的复杂性和压裂裂缝参数的不确定性所决定的。在油藏数值模拟中,针对鄂尔多斯盆地靖安油田五里湾一区低渗透的特点,结合试井资料,根据等值渗流阻力法原理对所建立的近井地带地层渗透率三维地质模型进行了合理修正;根据等连通系数法原理,采用井间连通性修正技术和局部网格加密技术模拟水力压裂时产生的压裂裂缝,从而达到较好的动态资料拟合效果。在历史拟合的基础上,研究了不同生产规模和不同注采比的开发技术政策界限,设计了合理的开发参数,对低渗透油田的开发具有一定的指导作用。
It is often difficult for us to do the numerical simulation of large-scale intergral fracturing in low-permeability oil reservoir for the complexity of the reservoir description and uncertainty of fracturing parameters after hydraulic fracturing. According to the low-permeability characteristics and its welltest interpretation result of No. 1 Wuliwan block in Jingan Oilfield of Erodos Basin,we adjust the near wellbore permeability reasonably on the basis of principal of equivalent filtrational resistance method during reservoir numerical simulation. At the same time, we simulate the fractures created by hydraulic fracturing using the technology of interwell communication modification and local grid refinement on the basis of principal of equivalent connectivity factor method. Good matching results of dynamic data are achieved. Based on history match, we study production technology policy limitation about different commercial scale and injection-production ratio, and then, we design the reasonable operational parameters. It will provide rational theoretical guidance to the development of the low-permeability oilfield.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2006年第6期101-104,共4页
Petroleum Geology and Recovery Efficiency
关键词
整体压裂
等值渗流阻力法
等连通系数法
局部网格加密
开发技术政策界限
靖安油田
intergral fracturing, equivalent filtrational resistance method, equivalent connectivity factor method, local grid refinement, production technology policy limitation, Jingan Oilfield
