摘要
大量实验和现场数据表明,低渗透油藏中普遍存在启动压力梯度,并且裂缝对应力的敏感比基质更强,文中在双孔、双渗达西渗流的数学模型基础上引入启动压力梯度和应力敏感,建立了裂缝性低渗透油藏双孔、双渗渗流模型,并对其进行了全隐式联立求解以及实例计算。
A large number ofexperimental and field data showthat startingpressure gradient exists in lowpermeability reservoirs and fracture is more sensitive than the matrix for stress. Based on dual porosity/dual permeability Darcy seepage flow mathematical model, pressure gradient and stress sensitivity are introduced. A seepage flow model in fractured low permeability reservoir is established, and a full-implicit simultaneous solving and examples calculation are carried out.
出处
《岩性油气藏》
CSCD
2009年第3期118-121,共4页
Lithologic Reservoirs
关键词
裂缝性低渗透油藏
启动压力梯度
应力敏感
双孔、双渗
数值模拟
fractured lowpermeability reservoir
starting pressure gradient
stress sensitivity
dual porosity/dual permeability
numerical simulation
