青西油田巨厚推覆体防斜打快技术  

Deviation control and fast drilling technology of thick nappe in Qingxi Oilfield

作　　者：艾贵成 田宏岭 李国兴 吕晓平 张敏 王水 

机构地区：[1]西部钻探国际钻井公司,新疆乌鲁木齐830000

出　　处：《断块油气田》2008年第6期97-98,共2页Fault-Block Oil & Gas Field

摘　　要：青西油田志留系推覆体厚度达1500～4000m,可钻性级值在7～9级,地层倾角高达37～75°,严重的井斜使得井壁极易跨塌。为了解决井斜超标、机械钻速慢的难题,试验和应用了高刚性强钟摆钻具防斜、偏轴接头、牙轮钻头复合钻井、MWD复合导向钻井、空气(充气)钻井及PowerV垂直钻井等技术,提高了钻井速度,保证了井身质量和井下安全。The thickness of Silurian nappe reaches 1500-4000m in Qingxi Oilfield and the drillability grade is 7-9. The angle of formation is 37°-75°. The well deviation and fall are severe. A high-rigid pendulum stem anti-deviation technology, eccentric axis joint, compound drilling used rock bit, MWD compounding steering drilling, air filling drilling and Power-V vertical drilling techniques are used during the test in order to solve the problems of well deviation superstandard and low rate of penetrate. The drilling speed is improved and the downhole safety is ensured.

关 键 词：推覆体 复合钻井 MWD 充气钻井 PowerV垂直钻井 

分 类 号：TE242.9[石油与天然气工程—油气井工程]