摘要
油藏合理注水强度是开发好油藏的重要参数之一 ,用毛管压力曲线确定合理注水强度的计算方法目前国内外很少报道。文中运用流体力学原理 ,将多孔介质中的水驱油过程简化假设成并联毛管中的水驱油过程 ,基于泊谡叶方程和毛管压力特征 ,推导了并联毛管中产量分配公式和合理产量计算表达式 ,建立了用毛管压力曲线确定合理注水强度的计算方法。实例计算表明 ,采用毛管压力曲线确定出的合理注水强度与油藏实际注水强度基本一致 ;
The reasonable water injection rate is an important factor in waterflooding reservoir. The determination method of a reasonable injection rate using the capillary pressure curve wasn't reported before. Based on hydrodynamics theory and the simplified porous medium model (pore doublet model),and according to poiseuille equation and capillary pressure curve, we obtained equations of reasonable rate proportion and oil rate calculation between the two parallel connection capillaries, and we also established a method of determination the reasonable water injection rate in waterflooding reservoir. The field case studies showed that the calculated results went well with the real injection rate, which means the determination method of reasonable water injection rate using the capillary pressure curve presented in this paper is reliable and practical.
出处
《西南石油学院学报》
CSCD
2002年第5期51-53,共3页
Journal of Southwest Petroleum Institute
关键词
油井
毛管压力曲线
注水强度
可流动孔隙体积
capillary pressure curve
flowing pore volume
reasonable water injection rate
