气体循环钻井工艺系统研究  

STUDY ON THE GAS CIRCULATION DRILLING SYSTEM

作　　者：李军[1] 柳贡慧[1,2] 韩烈祥 

机构地区：[1]中国石油大学石油工程学院.北京 [2]北京联合大学 [3]中国石油川庆钻探公司钻采工艺技术研究院

出　　处：《钻采工艺》2010年第3期48-50,共3页Drilling & Production Technology

基　　金：国家高技术研究发展计划(863计划)课题(2006AA06A103);国家重点基础研究发展计划(973计划)课题(2010CB226704);中国石油科技创新基金研究项目(2009D-5006-03-09)资助

摘　　要：目前气体钻井均采用出井气体直接排放的方式。如果能将气体回收,象普通钻井液一样循环使用,则可以大大减少能源消耗,降低钻井成本。同时,如果地层出气量较大,还可以进行天然气的分离与回收利用,使气体钻井的综合效益明显提高。文章针对我国目前氮气和天然气钻井中普遍存在的气体不能循环使用、导致成本过高的问题,首次完整提出了气体循环钻井系统的观点,填补了国内外空白。系统设计了气体循环钻井的工艺技术方案和工艺流程。初步现场试验结果表明,该技术简单易行,稳定可靠,应用前景广阔。对进一步降低我国气体钻井成本,加快推广气体钻井技术具有重要价值。It is very popular in China that during the gas or nitrogen drilling operation,the gas come out of the well can only be discharged directly.Because the expensive gas can not be recycled,the corresponding drilling cost is very high.To solve this problem,the idea of gas circulation drilling system was put forward for the first time,which fills up domestic and overseas blank in drilling industry.The technical proposal and technological process have been studied in detail.The preliminary field test has shown that the new technology is feasible and the whole system is stable.The prospect of application and extension of the new system is great.It is beneficial to reduce the operation cost and improve the popularization of the gas drilling technology.

关 键 词：气体钻井 循环 氮气 天然气 

分 类 号：TE242.6[石油与天然气工程—油气井工程]