川南地区排水找气井生产特征及对策

根据川南地区排水找气井的现状，分析产层井口压力、气水产量变化等生产特征，指出要解决川南地区地层压力下降快，自喷期短等矛盾，可以采取在产层距气水界面较近的井，控制井口生产量，建立稳定生产制度；对远离气水界面较远的井，采用油套环空强排水，气井出现异常情况，可增加外力助排措施等方法。

PRODUCTION FEATURES OF DRAINAGE GAS RECOVERY WELLS AND CORRESPONDING PRODUCTION MEASURES IN SOUTH SICHUAN AREA

On the basis of the present situation of dewatering gas production wells in South Sichuan,pay zone,wellhead pressure,variation in gas and water production,and other production features are studied.This paper points out that in order to solve the problems of quick formation pressure decrease and short flowing period in South Sichuan area,the wellhead production rate is controlled,and stable production strategy are designed for the wells near to gas/water interfaces.For the wells are far from gas/water interfaces,aggressive water drainage through tubing/casing annulus can be adopted.In the case of abnormal problems,other forces can be exerted to help water drainage.