摘要
气举是一种有效的排液方式,可以快速彻底地排出井筒积液和井底附近地层的液体。研究了气举排液的设计方法,在此基础上绘制了反映排液量、注气量、排液深度以及井底流压之间关系的图版。根据气举排液的特点,该图版对于同一层位(深度、地层压力梯度和温度梯度相似)的油气井是可以通用的。在确立合理流压的情况下,根据该图版进行气举排液设计,可以大大提高设计效率。实例证明该方法是有效可行的。
The gas-lift was an effective fluid-withdrawing technique,by which the liquid in wellbore and nearby the bottomhole could be rapidly and completely withdrawn.The design method of airlift and fluid discharge was studied.On the basis stated above,a chartboard was drawn to reveal the relationship between fluid discharge rate,gas injection rate,fluid discharge depth and bottomhole flow pressure.According to the characters of gas-lift and fluid discharge,the chartboard was general for all wells in the same layer with the similar depth of stratum(including depth,formation pressure gradient and temperature gradient).When the reasonable BHFP is determined,the chartboard is used to design the gas-lift and fluid discharge,it can be used for greatly improving the efficiency.It is demonstrated that the method is effective and feasible.
出处
《石油天然气学报》
CAS
CSCD
2012年第6期141-144,170,共4页
Journal of Oil and Gas Technology
关键词
气举排液
排液量
注气量
井底流压
优化设计
gas lifting and fluid discharge
fluid discharge rate
gas injection rate
bottom hole flowing pressure
optimized design
