浅谈苏里格南气井增产措施

Stimulation Measures for Gas Wells in Southern Sulige

苏里格南区块属于典型致密岩性气藏,且储层非均质性强,砂体变化大;随着气田工业化开发的加快,储层能量下降,井筒积液增加,导致气井产量递减快,实现单井稳产越发困难。介绍了气井产量出现递减的原因,利用气井动态分析方法,结合苏里格南气井实际生产情况,对苏里格南区块采取的压力恢复、泡排、速度管柱、二次压裂等气井增产措施进行效果评价。

The southern block of Sulige gas field belongs to typical tight lithologic gas reservoir,its reservoir heterogeneity is strong,andthe sand body changes greatly.With the industrialization development of the gas field,the energy of the reservoir decreases and the accumulation of the fluid in the wellbore increases,resulting in the rapid decrease of the gas well production and the difficulty of achievingstable production of a single well.The reason of gas well production decline is analyzed,and according to the actual production situationof the gas wells in southern Sulige,the application effects of the stimulation measures of gas wells,such as pressure recovery,foam drainage,velocity string drainage,secondary fracturing,etc.,are evaluated by using the dynamic analysis method.