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四川石油管理局一直致力于深井天然气井的钻探与开发,在四川盆地面积约18×104km2的范围内探明一大批含气构造,同时形成了一套完整的深井气井钻井配套技术.近年来,先后在中国境内的塔里木、青海、长庆、辽河及国外的泰国、伊朗、哈萨克斯坦等油气区进行以钻井为主的工程技术服务,在实践中逐步完善了气井钻井技术.文章在分析四川碳酸盐岩储层地质特点和钻井难点的基础上,简要而全面地介绍了四川碳酸盐岩地层压力预测、深井钻井、深井测试、油气层保护、井控、井漏的处理等方面的天然气井钻井技术.

Drilling Technique for Gas Wells in Sichuan Region

??Sichuan Petroleum Administration,engaged in the deep gas well drilling for a long time,has proved a great quantity of gas-bearing structures within a scope of about 18×10⁴km² of Sichuan basin,developed a complete drilling technique for deep gas wells and conducted the engineering service which majority is well drilling successively in the oil and gas regions,such as Talimu,Qinghai,Daqing and Liaohe of China and in some foreign countries,such as Thailand,Iran and Kazakhstan,etc.,progressively perfecting the gas well drilling technique in the practice.In this paper,based on analyzing the geological characteristics of the carbonate reservoirs in Sich uan and the difficulty in drilling,the gas well drilling techniques,such as carbonate formation pressure prediction,deep well drilling,deep hole testing,oil and gas reservoir protection,well control,lost circulation disposal,etc.,are briefly and overall presented.