论文部分内容阅读
水平井筒内压降对水平井生产动态有较大影响。分析了水平井生产时与渗流耦合的水平井筒内单相变质量流的特性后 ,从水平井筒内流动出发 ,根据质量守恒原理和动量定律导出了裸眼完井和射孔完井的水平井筒内压降计算基本公式 ,并根据势迭加原理导出了油藏内渗流的压力方程。在此基础上 ,建立了石油工程上实用的水平井筒内压降计算新模型 ,给出了实例计算结果
Horizontal wellbore pressure drop has a significant impact on the production of horizontal well. After analyzing the characteristics of single-phase variable mass flow in horizontal wellbore coupled with seepage flow during the production of horizontal well, starting from the flow in the horizontal wellbore, according to the principle of conservation of mass and the law of momentum, the horizontal wellbore with open-hole completion and perforation completion is derived Pressure drop calculation formula, and according to the potential superposition principle derived reservoir pressure equation of seepage. On this basis, a new model for calculating the pressure drop in horizontal wellbore has been set up in petroleum engineering. The calculation results of examples