Portable drill rod magnetic memory detector

A magnetic memory, portable technology, applied in the direction of material magnetic variables, etc., can solve the problems of published research results, no drill pipe magnetic memory detection, etc., to achieve the effect of low lift-off effect, easy on-site application, and improved detection efficiency.

Active Publication Date: 2011-06-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even so, there are no published research results on the magnetic memory detection of drill pipes.

Method used

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  • Portable drill rod magnetic memory detector
  • Portable drill rod magnetic memory detector

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Embodiment Construction

[0019] The specific implementation of the portable drill pipe magnetic memory detector of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments. The portable drill pipe magnetic memory detector of this embodiment is suitable for detecting a drill pipe diameter of 127 mm.

[0020] Refer to figure 1 . The overall structure of the portable drill pipe magnetic memory tester is composed of four parts: the main body, the test control box, the remote control and the notebook computer. Among them, the detection control box supplies power to the main body of the instrument through a cable. A wireless receiver is fixed on the main body of the instrument. The remote controller controls the movement and detection of the main body of the instrument through the wireless receiver. The main body of the instrument realizes movement, detection and recording along the tested drill pipe. The notebook computer is responsible for in...

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Abstract

The invention relates to a portable magnetic memory detector for a drill rod, which is applied to nondestructive examination for a petroleum drill rod. The detector body is fixed with a magnetic memory sensor; a detector stander is provided with a right-angled steel plate of which the shape is of a right angle square; and the middle of the right-angled steel plate is fixed with a diaphragm plate on which a bearing and a roller are fixed. Two ends of the right-angled steel plate are fixed a motor box and an electric motor respectively. The outside of the right-angled steel plate is fixed with a split detecting ring. The magnetic memory sensor is fixed on the inner wall of the split detecting ring. A stroke sensor is arranged on the roller. The inner wall of the split detecting ring is provided with 16 magnetic memory sensors evenly. The portable magnetic memory detector has the advantages that the magnetic memory detector detects residual magnetic field intensity of the drill rod, provides a fire-new nondestructive examination method for the petroleum drill rod, provides data for evaluating surface damage of the drill rod, and plays a quite important role in reducing drilling accidents and ensuring drilling production safety.

Description

Technical field [0001] The invention relates to a non-destructive testing device for petroleum drill pipes, which is mainly used for detecting the damage and residual stress of the petroleum drill pipe body, and provides a basis for the rating of the drill pipe. Background technique [0002] Drill pipe is an important part of petroleum drill string, mainly used to transmit power and transport drilling fluid. During the drilling process, the drill pipe is subjected to tensile, compressive, bending, torsional loads and additional dynamic loads caused by impact vibration during drilling, and its outer surface is subject to local wear and medium corrosion. Petroleum drill pipe is a rigid cylindrical hollow member. Due to the harsh environment of high temperature and high pressure corrosive liquid immersion and complex alternating stress during use, the drill pipe will gradually lose its basic functions due to wear, fatigue damage and corrosion damage. Drill pipes in service often ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/82
Inventor 宋周成樊建春周杰张来斌苏建文温东卢强储胜利乐法国迟军
Owner PETROCHINA CO LTD
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