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A power tong

A technology of power tongs and clamps, applied in the field of power tongs, can solve the problems of weakening the structural strength around the pipeline and complicating the structure of the power tongs, and achieve the effect of compact structure, simple structure and low maintenance cost

Inactive Publication Date: 2006-12-20
В-ТЕХ АС
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Obviously, having radial openings of this type in a power tong that must be able to turn about the longitudinal axis of the pipe complicates the construction of the power tong
The opening significantly weakens the structural strength around the pipe

Method used

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Examples

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Embodiment Construction

[0028] In the drawings, reference numeral 1 denotes a connecting assembly of a power tong 2 and a spare tong 4 , which are located on a drilling machine 6 and coaxial with a drilling center 8 of the drilling machine 6 . The assembly 1 is connected in a vertically displaceable manner to two guide posts 10 arranged opposite to each other in the radial direction of the drilling center 8 with respect to the drilling center 8 .

[0029] The guide column 10 is connected to a frame 12 which is displaceable on guide rails 16 connected to the drilling machine 6 by means of wheels 14 and hydraulic power (not shown).

[0030] Thus, in the operating position, the assembly 1 is directly above the sliding carousel 18 of the drilling rig 6 through which the pipeline 20 protrudes upwards and continues upwards through the assembly 1 . The pipeline 20 is made up of pipe sections 22 which are threaded together.

[0031] Such as image 3 and 4 As shown, the power tong 1 comprises a power tong ...

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PUM

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Abstract

A power tong for use during installation and dismantling of pipes when drilling in the ground, such as is known from e.g. petroleum production, comprising a drive ring (30) and at least one clamping device (40), where the clamping device (40) is arranged to grip a pipe string (20), the power tong (2) being equipped with a driving mechanism (32, 34) for rotation of the clamping device (40) about the longitudinal axis of the pipe string (20), and where the clamping device (40) communicates with a fluid supply via a swivel ring (60) that encircles the drive ring (30).

Description

technical field [0001] The invention relates to a power tong. More specifically, the present invention relates to a power tong without radial openings, particularly suitable for use during the installation of pipelines, for example when drilling the earth as is known for oil production. The power tong has a swivel connector surrounding the tong body for transferring pressurized fluid from an external source of pressurized fluid to the tong body as the power tong is rotated about the longitudinal axis of the pipe. Background technique [0002] In addition to oil production, power tongs are known to be used for installing and removing pipes from pipelines associated with drilling machines. In the commonly used mechanical pipe wrench, after screwing on or unscrewing the coupling, the mechanical pipe wrench is moved substantially horizontally away from the pipeline, which is located at the drilling center of the drilling machine. [0003] This method relies on a power tong hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/16
CPCE21B19/164
Inventor 海格·鲁宾·霍尔斯
Owner В-ТЕХ АС