悬挂器旋转机构设计与试验研究

Design and Experimental Research on Rotating Mechanism of Liner Hanger

膨胀悬挂器通过旋转机构带动尾管转动提高固井质量、解决尾管入井遇阻问题,旋转机构需要传递大扭矩、具有高可靠性,是膨胀悬挂器研制的关键和技术难点。采用键槽传动机构实现旋转,通过扭矩套筒上的传动键与尾管套筒内壁的键槽配合传动扭矩,使用3D打印技术验证了机构的可行性,并利用ABAQUS有限元软件对旋转机构的强度进行了计算,得到扭矩应力关系曲线。在此基础上研制出旋转机构,通过扭矩测试试验和现场应用验证了其可靠性,数据表明所研制的旋转机构扭矩达到15000N·m,能够满足现场使用要求。

Expandable liner hanger can spin liners by rotating mechanismto improve cementing quality and resolve block problem. The rotating mechanism of liner hanger needs to transmitlarge torque and have high reliability, which are the diwulties and key technologies. Keyways are used to design rotating mechanism, so the torque is transmitted by matchingbetween keys of torque sleeve and slots of liuer sleeve. Rotating mechanism is developed with the help of 3D printing technology, and the relationship between torque and stressis obtained by FEA.In order to test the property of rotating mechanism, torque experiment and field application are finished. Data suggests that transmitting torque can reach 15000N·m, which satisfiesthe need of the field.