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 magnetic memory detection of drill pipe, publication of research results, etc., to achieve the effect of easy on-site application, low lift-off effect, and ensure the safety of drilling production.
Active Publication Date: 2009-04-29
PETROCHINA CO LTD
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Problems solved by technology
Even so, there are no published research results on the magnetic memory detection of drill pipes.
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[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 accompanying drawings and specific examples. The portable drill pipe magnetic memory tester in this embodiment is suitable for detecting a drill pipe with a diameter of 127mm.
[0020] refer to figure 1 . The overall structure of the portable drill pipe magnetic memory tester is composed of four parts: the main body of the instrument, the test control box, the remote control and the notebook computer. Wherein, the detection control box supplies power to the main body of the instrument through cables. A wireless receiver is fixed on the main body of the instrument. The remote control 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 drill pipe body under test. The no...
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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 oil drill pipes, which is mainly used for detecting oil drill pipe body damage and residual stress, and provides a basis for rating the drill pipes. Background technique [0002] Drill pipe is an important part of oil drill string, mainly used to transmit power and transport drilling fluid. During the drilling process, the drill pipe bears tension, compression, 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 steel cylindrical hollow rod. Due to the harsh environment of immersion in high temperature and high pressure corrosive liquid 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 that have been in service often have defects such as fatigu...
Claims
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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