协同钻头推靠与指向作用控制井眼轨迹的旋转导向系统  

A new rotary steering method for controlling wellbore trajectory by combining pushing and pointing forces on drill bit

作　　者：刘永旺[1,2,3] 郭福贵 管志川 秦晓兵[1,2,3] LIU Yongwang;GUO Fugui;GUAN Zhichuan;QIN Xiaobing(School of Petroleum Engineering in China University of Petroleum(East China),Qingdao 266580,China;Key Laboratory of Unconventional Oil and Gas Development(China University of Petroleum(East China)),Ministry of Education,Qingdao 266580,China;Shandong Deep Drilling Process Control Engineering Technology Research Center,Qingdao 266580,China;Northwest Oilfield Branch of SINOPEC,Urumqi 830011,China)

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]非常规油气开发教育部重点实验室(中国石油大学(华东)),山东青岛266580 [3]山东省深地钻井过程控制工程技术研究中心,山东青岛266580 [4]中国石油化工股份有限公司西北油田分公司,新疆乌鲁木齐830011

出　　处：《中国石油大学学报（自然科学版）》2022年第5期73-80,共8页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家重点研发计划政府间国际科技创新合作重点专项(2021YEE0111400);中石油重大科技项目(ZD2019-183-005);国家自然科学基金面上项目(52074324,51974320);中央高校基本科研业务费专项(19CX02065A)。

摘　　要：推靠式旋转导向钻井系统其核心工作原理为“速度杠杆”原理,因原理限制,导致进一步提升其轨迹控制能力、延长其使用寿命和提高其钻井速度成为“卡脖子”难题。提出基于“省力杠杆”原理的新型旋转导向方法,建立轨迹控制能力有限元分析模型,开展模拟研究并与常规推靠式旋转导向钻井系统钻头所获侧向推靠力、钻头指向角及钻进趋势角进行对比。结果表明:新型旋转导向方法可将旋转导向工具推靠力提升数倍施加于钻头,可达到协同钻头推靠与指向作用控制井眼轨迹的目的,且为不影响轨迹控制能力及工具寿命基础上提速工具的安装提供空间;该方法可为旋转导向钻井系统同时实现强轨迹控制能力、长工具使用寿命和提高钻井速度提供可行性方案。The main working principle of the pushing bit rotary steering drilling system is via the so called "speed lever" mechanism.But,due to the limitation of the method,it has become a "strangle" problem to further improve trajectory control ability,prolong service life and increase drilling speed.In this study,a new rotary steering method based on the principle of "force-reducing lever" was proposed,and a finite element analysis model of trajectory control ability was established.The effectiveness of the new method was analyzed by comparing the three indexes of lateral pushing force,bit pointing angle and drilling trend angle obtained using a conventional push rotary steering drilling system.The results show that the new rotary steering method can increase the pushing force of the rotary steering tool by several times,achieving the purpose of combining with the pushing and pointing of the bit to control the wellbore trajectory,and providing space for the installation of speed-up tools without affecting the trajectory control ability and tool life.

关 键 词：旋转导向方法 轨迹控制能力 工作寿命 钻井速度 速度杠杆 省力杠杆 

分 类 号：TE21[石油与天然气工程—油气井工程]