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排水采气是四川有水气藏主要采用的一种工艺措施，包括气举排水、泡沫排水、抽油机排水等，科学地把握工艺的选择和投入是一项不可忽视的问题。排水采气工艺的可行性除了进行技术论证外，还应进行技术—经济论证；针对排水工艺的特点，其技术—经济判断的思路应是将全部费用分为非工艺费用和工艺生产费用两部分，并将工艺的目标参数结合于成本计算中；分别给出了气举排水工艺和泵抽类排水工艺的技术—经济判别式和判别分析方法，并用实例作了验证。

DISCUSSION ON THE METHODS FOR FEASIBILITY DEMONSTRATION OF WATER PUMPING GAS PRODUCTION TECHNOLOGY

Water pumping gas production,including gas lift drainage,foam drainage and pump suck drainage ect,is a main technology adopted in watre bearing gas reservoir in Sichuan Basin.It is very important to scientifically select water pumping gas production technology.The feasibity of technology should be technically and economically demonstrated.According to the technological characteristics,the total cost should be divided into non technological cost and technological production cost,and technological target parameters should be combined into cost calculation.The technical economic disiciminant,discrimination analysis of gas lift drainage and pump suck drainage are made and proved by examples.