摘要
苏里格气田有效砂体以孤立状分布为主，形态呈椭圆或长椭圆状，目前推导产能方程的圆形边界中心一口井的理论模型不再适用。通过两次保角变换，先将椭圆形边界中心一口井的问题转化为圆形供给边界偏心井的问题，然后再将模型进一步变为圆形供给边界中心一口井的问题，最后根据保角变换势和产量不变的原理，应用纯径向渗流理论得出苏里格气田椭圆状孤立砂体的产能方程。实际应用表明，所建立的新产能方程比原方程更加可靠。
The effective sandbodies of Sulige Gasfield are characterized by insular distribution with ellipse and long elliptic shapes. At present, the theoretical model of the productivity equation deduced by one well in the center of the round border is not anymore adaptive. By means of twice conformal transformations, firstly the problem of one well in the center of the elliptic border is transformed into the matter of the eccentric well in the circular border, and then the latter is ch/mged into the problem of one well in the center of the circular border. Finally according to the principles of conformal transformation potential and unchangeable production, the productivity equation of the elliptic sandbodies in Sulige Gasfield is obtained by using the purely radial flow theory. The practical application shows that the new productivity equation is more dependable than the original..
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2010年第6期105-109,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
基金项目：国家重点基础研究发展计划（973）项目（2007CB209506）资助.
关键词
苏里格气田
椭圆状砂体
保角变换
产能方程
Sulige Gasfield
elliptic sandbody
conformal transformation
productivity equation
