排液采气技术在白庙气藏的应用研究

白庙气藏属于低渗、致密、深层凝析气藏。由于气藏断块小，单井可控制储量少，气井产量低，靠自身能量很难将井筒积液携带出来，必须采取适合的排液采气技术排出井筒积液，以提高气井天然气产量，延长自喷稳产期。文章重点介绍了应用于白庙气藏的主要排液采气技术及其应用效果。小油管排液采气技术主要应用于产气量较低气井的排液；柱塞气举排液采气技术、橇装气举排液采气技术都是间歇气举排液采气技术，前者主要应用于具有一定能量、产气量较低、靠自身能量排液效率较低的气井，后者主要应用于能量、产气量都比较低的气井。最后对排液采气技术的应用情况进行了总结。

APPLICATION OF “GAS RECOVERY BY LIQUID DRAINAGE” TECHNOLOGY IN BAIMIAO GAS RESERVOIR 1)

Baimiao gas reservoir belongs to a low-permeable, tight and deep condensate gas reservoir. The reserves controlled by a single well are less, the productions of gas wells arc low and the cumulated liquid in boreholes is difficult to be discharged by their own energy because the reservoir consists of small fault blocks. So the proper technology of Gas Recovery by Liquid Drainage should be used to discharge the cumulated liquid in boreholes, improve the gas production and prolong the flowing life with stable production. The main techniques of Gas Recovery by Liquid Drainage used in Baimiao gas reservoir and their application results are introduced in the article. The technique of Gas Recovery by Liquid Drainage with narrow tubing is used mainly for the liquid drainage of gas wells with low production. The technique of Gas Recovery by Liquid Drainage with plunger gas lift and the technique of Gas Recovery by Liquid Drainage with skid-mounted gas lift both are techniques of Gas Recovery by Liquid Drainage with interstitial gas lift. The former is mainly used for the gas wells with some energy, low production and low efficiency of liquid drainage by themselves' energy. The latter is mainly used for the gas wells with low energy and production. In the end, it is summed the application of the techniques of Gas Recovery by Liquid Drainage.