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Well pipe spinning and torqueing apparatus

机译:井管旋扭装置

摘要

A device for turning a section of well pipe to connect it to or disconnect it from a pipe string includes a power unit to be mounted at a side of a well and having a part, preferably a piston, which is power actuable in opposite directions, with that part acting upon movement in one direction to exert a pulling force on a flexible line connected to a tong for turning the pipe section, and with the specified part acting upon movement in the opposite direction to exert pulling force on a second elongated flexible element, preferably a chain, which extends about the pipe section and acts to spin it rotatably when the chain is pulled. The spinning element is desirably directed along a multiple reversing path giving that element increased longitudinal movement as compared with the tong actuating line for a predetermined length of movement of the piston, so that the spinning element can turn the pipe through a relatively large number of revolutions whereas the tong actuating line moves a shorter distance but can apply a greater torque to the pipe.
机译:一种用于转动井管的一部分以将其连接至管柱或将其与管柱断开连接的装置,包括动力单元,该动力单元安装在井的一侧,并具有一部分,优选为活塞,该部分可沿相反方向被动力驱动,该部分沿一个方向运动以对连接到用于转动管段的钳子的挠性线上施加拉力,而指定部分沿相反方向运动以对第二细长挠性元件施加拉力最好是一条链,该链绕管段延伸,并在链被拉动时可旋转地旋转。理想地,旋转元件沿多条反向路径定向,与活塞钳的预定移动长度的钳子驱动线相比,该旋转元件使纵向元件的纵向移动增加,从而旋转元件可以使管旋转相对较大的转数。夹钳致动管路移动的距离较短,但可以向管道施加更大的扭矩。

著录项

  • 公开/公告号US4346631A

    专利类型

  • 公开/公告日1982-08-31

    原文格式PDF

  • 申请/专利权人 VARCO INTERNATIONAL INC.;

    申请/专利号US19800187702

  • 发明设计人 GEORGE I. BOYADJIEFF;

    申请日1980-09-16

  • 分类号B25B13/50;

  • 国家 US

  • 入库时间 2022-08-22 12:09:32

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