川西气田雷口坡组气藏超深大斜度井钻井关键技术  

The key drilling technology of ultra-deep highly deviated well in Leikoupo gas reservior,western Sichuan Basin

作　　者：王汉卿 胡大梁[2] 黄河淳 刘伟[3] 郑义[3] 田明刚 WANG Hanqing;HU Daliang;HUANG Hechun;LIU Wei;ZHENG Yi;TIAN Minggang(Chongqing Drilling Branch of Southwest Oilfield Service Company,SINOPEC,Chongqing 400042,China;Petroleum Engineering Technology Institute of Southwest Oil&Gas Company,SINOPEC,Deyang 618000,China;Southwest Oil&Gas Company,SINOPEC,Chengdu 610041,China;Linpan Drilling Branch ofSouthwest Oilfield Service Company,SINOPEC,Linyi 251507,China)

机构地区：[1]中国石化西南石油工程公司重庆钻井分公司,重庆400042 [2]中国石化西南油气分公司石油工程技术研究院,四川德阳618000 [3]中国石化西南油气分公司,四川成都610041 [4]中国石化西南石油工程公司临盘钻井分公司,山东临沂251507

出　　处：《断块油气田》2020年第4期513-516,共4页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项课题“低渗油气藏钻井液完井液及储层保护技术”(2016ZX05021-004)。

摘　　要：针对川西气田雷口坡组气藏钻井面临的地层压力体系复杂、上部地层易发生井斜超标、须家河组—小塘子组可钻性差、雷口坡组地层破碎等技术难题,根据地层三压力剖面和井壁稳定性特征,优化必封点设置,形成三开制井身结构设计方案;根据预弯曲动力学原理优化易斜地层钻具组合设计,基于地层可钻性特征开展钻头个性化设计和高效钻头优选,优化形成破碎地层滑动导向轨迹控制技术。将上述技术集成应用于PZ3-5D井,该井完钻井深7339 m,平均机械钻速4.28 m/h,钻井周期238.4 d。现场应用表明,超深大斜度井钻井关键技术能够有效保障钻井安全,实现提速提效,为后续大斜度开发井的实施提供技术支撑。The Leikoupo reservoir in western Sichuan Basin has several drilling difficulties such as complex formation pressures,extra well deviation in upper strata,poor drill ability of Xujiahe-Xiaotangzi strata,and broken strata of Leikoupo etc.Based on the three-pressure profiles and wellbore stability characteristics,the setting positions were optimized to propose the three spud casing program design.The bottom hole assembly were designed by pre-bending dynamics theory to keep borehole vertical,and high efficiency drill bits were designed and selected based on rock drillability.The researchers developed the downhole motor slide-steering trajectory control technology for directional well section.Those techniques were applied to well PZ3-5D which has the total depth of 7339m,average penetration rate of 4.28m/h and drilling operation time of 238.4d.The field application shows that the key drilling technology of ultra-deep highly deviated well can effectively ensure drilling safety,improve penetration rate,and provide important technical supports for subsequent highly deviated wells.

关 键 词：超深 大斜度井 三开制 钻井技术 雷口坡组 川西气田 

分 类 号：TE243[石油与天然气工程—油气井工程]