摘要
产水气藏的废弃压力是确定采收率的关键参数,它的大小直接影响到气藏采收率的高低,因此准确计算产水气藏废弃压力显得非常重要。考虑气井开采过程中产能方程系数的变化,推导出计算产水气井在不同伤害程度和伤害半径下,任意时刻的二项式产能方程,在井口生产条件一定的情况下,以最小井底流压下的气井最小携液速度为约束条件,确定出了产水气藏的废弃压力。
The abandonment pressure of water-bearing gas pool is the key parameter to ascertain the recovery factor, directly influencing the recovery size. This paper takes account of the change of parameters that have big impact on water-bearing gas well productivity equation and derives a binomial coefficient equation for it under different damage degrees and harm radius at any moment. Under a definite collar production working, such an abandonment pressure can be ascertained using minimum liquid-carrying velocity at minimal bottomhole flowing pressure as constraint condition.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2008年第5期641-643,共3页
Xinjiang Petroleum Geology
关键词
气藏
二项式
系数
废弃压力
gas pool
binomial
coefficient
abandonment pressure
