摘要
建立任意形状复合油藏有限导流垂直裂缝井稳定渗流的数学模型,采用区域剖分边界元方法对其进行求解,可获得垂直裂缝井的压力分布数值,绘制相应的压力剖面图.研究表明,由于裂缝具有高导流性,油藏的压力分布是不对称的,沿裂缝方向压力梯度最小,并且可以清晰的看出裂缝的作用区域.裂缝的存在使油藏的压力场发生显著变化,井底附近等压线呈现一组同心的椭圆形.
The mathematic model of finite conductivity vertically fractured wells in reservoir with arbitrary shape is established and solved by he boundary element method(BEM)with the division of the whole reservoir into several areas.Then the pressure profile map is also drawn.By analysis,because of the high conductivity of fracture,the pressure distribution is asymmetric,the pressure gradient is smallest along the fracture orientation and the influence region of fracture can be observed directly.The pressure distribution of reservoir is changed obviously because of the existence of vertical fracture,and the contour lines of the bottom hole present as elliptical not circular.
出处
《大庆石油学院学报》
CAS
北大核心
2008年第2期110-112,共3页
Journal of Daqing Petroleum Institute
基金
国家自然科学基金重点项目(50634020)
黑龙江省教育厅科学技术研究项目(11521003)
关键词
稳定渗流
边界元
垂直裂缝井
压力分布
有限导流
steady-state flow
boundary element method
vertically fractured well
pressure distribution
finite conductivity
