一种往复式液压驱动套管拔管机-石油机械.pdfVIP

— 40 — 石 油 机 械 2012 年 第 40 卷 第 9 期 钻井技术与装备  一种往复式液压驱 动套管拔管机 李 震 宇 ( 中铁山桥高级技工 学校) 摘要: 针对常见的拔卸器械在拔卸行程短 需要换扣 时，被拔套管上牵引力消失 ，处 于拉伸状 态的套管将会恢复弹性伸长而迅速缩 回井下一定长度的状况 ，提 出了一种往复式液压驱 动套管拔 管机 。该拔管机 既能间歇不停地拨卸 井下管柱 ，又 能方便地使被拔卸 的管柱在换扣 时继续处于拉 伸状态不 回缩。拔卸管柱 与夹持管柱都 由液压缸来完成 ，可 以快速夹持和松开管柱 ，并能可靠地 传递初始拔起 时较大的起拔力 ，解决 了目前许 多静力拔桩机在初始拔起 时靠焊接、穿销轴等 固定 方式的难题 ，缩短 了辅助作业时间，提高 了套管拔 管机 的 自动化水平 ，从 而减少 了人为 因素对拔 管作业的影响。实际应用情况表明 ，该拔管机能有效地实现连续拔管作业 ，大大提高工作效率。 关键词: 套管拔管机; 液压驱动; 夹管装置; 连接板; 液压回路 中图分类号: TE929 文献标识码: B 文章编号: 100 1 － 4578 ( 20 12) 09 － 0040 － 05 A Type of Reciprocating Hydraulic Drive Casing Drawbench Li Zhenyu ( China Railway Shanqiao Senior Technical School) Abstract: In the light of the problems with the common tube drawing bench ，a kind of reciprocating hydraulic casing drawbench was formulated. The drawbench can pull downhole string intermittently and nonstop and it can al- so conveniently keep the pulled string in tensional state without retraction. Both pulling string and clamping string are achieved by hydraulic cylinder which can quickly clamp and unfasten the string and can reliably transmit the considerable pullout force in initial pulling. As a result the problem has been solved that at present many static pile drawers depend on the fixing mode in initial pulling ，such as welding and pin axle. The auxiliary operation time is reduced ，the automation level of casing drawbench is improved and the effect of human factors on pulling operation is reduced. The practical application shows that the drawbench can effectively achieve continuous casing pulling and improve the operation efficiency remarkably. Key words: casing drawbench; h