Because the main drive mechanism is bottom water drive and the effects of lateral boundaries are negligible , it is assumed the gas reservoir is infinite with an impermeable upper boundary and a constant pressure lower boundary , without losing generality 由于底水气藏的产气主要由底水驱动而得,侧边边界影响可忽略,故假定气藏由上边界封闭和下边界定压的无限大区域所导出的产能公式便具有普遍意义。
Drainage domain of partial penetration gas well in bottom water reservoirs consists of the following two parts : ( 1 ) non - darcy binomial radial flow near the well ; ( 2 ) three dimensional darcy flow in areas far away from the partial penetration gas well due to bottom water drive 摘要底水打开不完善气井的渗流是由井附近区域遵循二项式径向流规律的非达西流动及此区域外遵循由底水驱动向不完善井三维达西流动两部分组成。