Method and device for positioning a power tong at a pipe joint

Details Method and device for positioning a power tong at a pipe joint Method and device for positioning a power tong at a pipe joint

2006-11-23

2011-11-29

Shakeri, Hadi (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S057330

Reexamination Certificate

active

08065937

ABSTRACT:
A method and device for positioning a power tong (2) at the pipe joint (14) of a pipe string (12), where, after the pipe joint (14) has been brought within the working area of the power tong (2), the power tong (2) must be displaced to a position that corresponds with that of the pipe joint (14), and where a camera (16) which may be displaced in parallel with the pipe (12), and which is linked to a display (18), is displaced until the image of the pipe joint (14) coincides with a marker (40) in the display, whereupon a signal is transmitted to a control (26), indicating that the power tong (2) is to be displaced to a position that corresponds with that of the camera (16) and thereby that of the pipe joint (14).

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