Application of air drilling technology in Puguang gasfield

Puguang gasfield is the largest gasfield in Sichuan basin that had been found.In order to increase drilling speed,shorten drilling cycle,and speed up expoitation progress of Puguang gasfield,well PD-1,well P2-2,well PA-2,well P4-2,well P6-3 were tested with air drilling technology.This paper analyzed feasivility of air drilling for the Puguang gasfield,introduces drilling operations in detail,and evaluated operational effects,analyzed problems that need to pay attention to and settle,in the end provide the research direction for the future.