机械化修井作业油管扶正装置的研制

Tubing Centralizing Device for Workover

为解决起下管柱作业时机械化程度低而导致的工人劳动强度大、施工环境恶劣和施工风险大等问题,研制了机械化修井作业油管扶正装置。该装置由井口支架、扶正液压缸、导向锥桶、辅助扶正臂、主扶正臂以及机械扶手等组成,采用液压缸驱动,通过扶正臂减小悬吊油管的摆动幅度,实现油管精准对中,保证油管顺利对、上扣。有限元分析结果表明,设计的装置最大能满足?114.3 mm(4?in)油管的扶正对中要求。现场应用结果表明,该装置可顺利配合井口装置和油管输送装置完成油管起下作业,无需人工直接参与,其安全性、稳定性及连续工作能力均满足现场应用要求。

To address the issues like great labor intensity,harsh operation environment and high operation risk during tubing string tripping due to low level of mechanization,the tubing centralizing device has been designed and developed. The device consists of wellhead bracket,the hydraulic cylinder for centralizing,guide conical barrel,assisting centralizing arm,main centralizing arm and mechanical handler assembly. The device,driven by hydraulic cylinder,could reduce the swings of the lifting tubing by tubing centralizing. Precise tubing centralizing ensures the smooth of the tubing connection alignment and makeup. Static stress analysis results show that the designed device could meet the centralizing and alignment requirement of maximum ?114. 3 mm( 4 ? in) tubing. Field application results showed that the device could well coordinate the wellhead device and tubing transmitting equipment,resulting in mechanized tubing tripping workover operation without human intervention,meeting the requirements for field application.