中文摘要：

稠油底水油藏开发过程中易发生底水锥进现象,导致油井过早见水,给油藏开发带来极大困难。因此确定油井的临界产量十分重要。目前临界产量的计算方法大多是针对无启动压力梯度的常规油藏而建立的。而稠油底水油藏由于流体性质,具有明显的启动压力梯度。针对稠油油藏渗流特征,建立了考虑启动压力梯度的稠油底水油藏临界产量的计算新方法。经实例分析可知,提出的计算方法更加符合稠油底水油藏实际情况,具有重要实际意义。

英文摘要：

Water coning is ea s y to appear in heav y oi l reser voir wi th bot tom water , which resul ts in earl ier water breakthrough and great difficulties to the development of the reservoir. So it is very important to determine the critical production rate of oil wel l . At present, most of the calculation methods for critical production are establ ished wi thout start-up pressure gradient. A new method for calculation of critical production for heavy oil reservoir is establ ished in this paper, considering start-up pressure gradient.Through instance analysis, it can be seen that this calculation method is more accurate and better meets the actual si tuation of the field, and has qui te important guiding signi ficance.