Experience of using magnetic powder and capillary methods of nondestructive testing in detecting defects of control objects in the oil industry

Background. It is impossible to minimize and prevent accidents during the operation of oilfield and drilling equipment without the use of non-destructive testing. Special attention is paid to the detection of surface defects by magnetic powder and capillary methods of non-destructive testing.

Aim. The article compares the applied methods of magnetization of control objects and the application of a magnetic indicator during magnetic powder control in the oil industry with the railway transport industry. An overview of operational defects of various parts detected by magnetic powder and capillary methods of nondestructive testing is given. Photographs with indicator drawings (traces) of defects detected by magnetic powder and capillary methods are shown.

Materials and methods. Based on the experience of conducting magnetic powder and capillary methods of nondestructive testing, the article discusses the various defects found, most often encountered in practice during the operation of oilfield and drilling equipment.

Results. The technology of conducting magnetic powder and capillary control in field and workshop conditions of oilfield and drilling service enterprises is described. The main types of capillary control used and methods of applying flaw detection materials are shown. Photographs of defects of various parts are presented with a description of the advantages of using a particular method in certain conditions affecting the sensitivity of the control.

Conclusions. The advantages and disadvantages of each of the methods are given based on the experience of using various means of non-destructive testing.

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