摘要
随着塔里木盆地塔中Ⅰ号碳酸盐岩凝析气田投入开发,迫切需要开展碳酸盐岩凝析气藏的单井产能变化规律方面的研究,从而指导气田的开发。通过建立双重介质单井径向模型,研究了初始生产气油比、地层渗透率、地层压力降落速度及形状因子对产能变化规律的影响。结果表明,当地层压力高于露点压力,产能基本不变化;当地层压力低于露点压力后,井产能会迅速降低,当地层压力为露点压力的95%时,即使很小的反凝析液量也会导致产能大幅度降低了50%以上;初始生产气油比、地层渗透率、地层压力降落速度对产能变化规律影响比较敏感,形状因子则不敏感。
With the development of carbonate gas condensate reservoirs in Tazhong-1,it becomes more and more important to study the deliverability change regularity of a single well in such reservoirs in order to guide the field development.Through a dual-permeability simulation model,this paper gets the effect of initial gas/oil ratio,formation permeability,pressure-drop rate and shape factor on well deliverability.The results show that the well deliverability will basically maintain the initial value when formation pressure is above the dew point pressure,however,it will drop rapidly just when formation pressure is below the dew point pressure.Even if the condensate drop out is very low,the well deliverability will be reduced to 50 percent of the initial value when the formation pressure declines to 95 percent of the dew point pressure.Initial gas/oil ratio,formation permeability,pressure-drop rate are all sensitive to well deliverability except shape factor.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第10期87-89,共3页
Natural Gas Industry
基金
国家重点基础研究发展计划(973计划)(编号:2001CB209100)的部分成果
关键词
塔里木油田
碳酸盐岩
凝析油气田
生产能力
反凝析
Tarim basin,carbonate rocks,gas condensate fields,productivity,retrograde condensation
