摘要
在大位移井实施过程中存在高难度井段井壁易失稳、井眼轨迹复杂和长稳斜段、套管与套管或钻杆与套管之间摩阻高、地层易漏失等问题,采用机械法,如加装减磨减阻工具,造斜段加装NRDPP类工具、稳斜段加装LoTAD等,容易导致管柱外径变大,从而导致井下摩阻扭矩和ECD增高。因此,通过化学方法降阻是大位移井降摩减阻的另一种有效途径。本文通过对CX-300降摩减阻剂的评价和现场应用,为大位移井化学降摩减阻摸索了一套有益的方法,应在此基础上,不断探索和完善降摩减阻体系。
During the implementation of extended reach wells,there are some challenges such as poor wellbore stability,long stable section,complex well trajectory,high torque between pipe(casing,drill pipe)and casing,formation leakage,etc.Which are easy to cause the outer diameter of the string to become larger by using mechanical methods,such as adding torque and drag reducing tools,NRDPP tools,LoTAD etc,which leads to the increase of ECD.Therefore,chemical method is another effective way to reduce torque and drag in extended reach wells.In this paper,through the evaluation and application of CX-300 torque and drag reducing agent,good application results have been achieved,and a useful method for chemical reducing torque and drag in extended reach wells has been explored.On this basis,we should continue to explore and improve the torque and drag reducing system.
作者
魏裕森
王跃曾
李思洋
张伟国
狄明利
WEI Yusen;WANG Yuezeng;LI Siyang;ZHANG Weiguo;DI Mingli(Shenzhen Branch of CNOOC(China)Co.,Ltd.,Shenzhen Guangdong 518067,China;Shenzhen Operation Company of COSL Oilfield Chemicals Division,Shenzhen Guangdong 518067,China)
出处
《石油化工应用》
CAS
2020年第11期73-78,共6页
Petrochemical Industry Application
关键词
化学降摩减阻剂
摩阻
大位移井
摩阻系数
CX-300
chemical torque reducer
torque and drag
extended reach well
friction coefficient
CX-300
作者简介
魏裕森(1981-),男,高级工程师,主要从事海上石油钻完井技术管理与研究工作,邮箱:weiys@cnooc.com.cn。
