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This paper presents the structure of positioning pin of VARCO TDS11SA top drive and tong cylinder and the practical application.

文章从VARCO TDS-11SA型电动顶驱定位销和背钳液缸的结构原理出发,结合现场使用实际,探讨了该类型顶驱定位销和背钳液缸故障的诊断技术,对于现场故障的快速诊断,具有积极意义。

The matched position and the adjustment techniques for fluid balancing cylinder on the ground with the down-hole working fluid cylinder were analyzed using the down-hole seepage flow theory.

论述了井下自同步换向式抽油装置 (信号反馈式抽油装置 )的换向原理和地面电控装置的工作原理及地面平衡缸与井下动力液缸的位置匹配和调节技术措施。