深水钻井随钻气侵模型研究  

Study on Gas Cut While Drilling in Deep Water

作　　者：田院刚[1] 周三平[1] TIAN Yuangang ZHOU Sanping(Xi’an Shiyou University, Xi’an 710000, China)

机构地区：[1]西安石油大学,西安710000

出　　处：《重庆科技学院学报（自然科学版）》2017年第3期7-9,18,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金："十一五"国家科技重大专项"高含硫气藏安全高效开发技术"(2008ZX05017);"十一五"国家科技重大专项"四川盆地普光大型高含硫气田开发示范工程"(2008ZX05048)

摘　　要：以地层渗流理论为基础,建立了深水钻井随钻气侵模型,结合南海某井实际气侵情况,模拟深水钻井井筒气体膨胀规律。研究结果表明:发生气侵后,气侵量随气侵时间的延长而增加;当机械钻速加大后,在相同时间内打开产层的厚度变大,进入到井筒的气体越多,气侵量越大;渗透率增大后,在相同时间内流入到井筒的气体越多,气侵量越大。Based on the percolation theory of formation, gas cut model of deepwater drilling during drilling process is established. Combined with the practical gas cut condition in the south China sea, wellbore gas expansion law of deepwater drilling is simulated. The results show ： as the growth of gas invasion time, gas influx is also increased; with the increase of penetration rate, the drilling depth increases, and gas in the wellbore will increase to cause lar-ger influx. And when the permeability increases, gas in the wellbore will be more and gas influx will grow.

关 键 词：深水钻井 气侵 随钻 溢流 

分 类 号：TE24[石油与天然气工程—油气井工程]