可控偏心器旋转导向钻井工具研制与现场试验  

Development and in-situ test of eccentricity controller for rotary steering drilling

作　　者：李汉兴[1] 姜伟[1] 蒋世全[1] 傅鑫生[2] 徐黔斌[3] 

机构地区：[1]中海石油研究中心 [2]西安石油大学电子工程学院 [3]中海油田服务股份有限公司

出　　处：《石油机械》2007年第9期71-74,179,共4页China Petroleum Machinery

基　　金：国家863研究课题"可控(闭环)三维轨迹钻井技术"(2003AA602012)的部分内容

摘　　要：研制的可控偏心器旋转导向钻井工具主要由驱动轴,导向机构、定位总成、测控单元、轴承支撑系统等部分组成。该工具通过偏心执行机构——导向机构来实现井眼轨迹的控制。导向机构由3个互成120°角的翼肋及液缸组成,3个翼肋的伸出量在钻具的相应位置形成1个偏心位移矢量,使可控偏心器偏离井眼中心线,形成1个等效弯接头,通过调整3个翼肋的偏心位移矢量,可形成不同的工具面角和弯接头弯角。现场试验证明,该工具的工作原理可行,满足旋转导向钻井井眼轨迹的控制要求。The rotary steering drilling is a new technology which is developed in 1990’s and the rotary steering drilling system is a key tool of this technology. The working principle and configuration of the eccentricity controller for rotary steering drilling are presented. The developed eccentricity controller can control well trajectory by eccentric displacement vector of steering mechanism of the tool, and this is essential difference compared with other rotary steering tool developed by other companies. The onshore and offshore field tests have been completed and the results show that the working principle of eccentricity controller is feasible and the tool can be used to control well trajectory. The field tests also provide test data for improvement and industrialization of the tool.

关 键 词：可控偏心器 旋转导向 钻井 井眼轨迹 位移矢量 

分 类 号：TE921.07[石油与天然气工程—石油机械设备]