Oil casing and tubing(www.baowi-steel.com) is an important part of oil drilling. It plays key roles in supporting the well wall, preventing well wall collapse, and controlling bottom well pressure. Therefore, the quality inspection of oil casing and tubing is crucial to ensure the safety and smooth progress of drilling and paralleling operations.
The quality inspection methods of oil casing and tubing mainly include the following aspects: Appearance inspection: Appearance inspection is one of the most basic quality inspection methods. By carefully observing the appearance of the oil casing and tubing, you can check whether there are cracks, deformations, corrosion and other problems. At the same time, it is also necessary to check whether the welds of the casing and tubing are complete and whether there are welding defects. Dimensional measurement: Dimensional measurement is an important part of oil casing and tubing quality inspection. By using measuring tools, such as calipers, vernier calipers, etc., measure the diameter, wall thickness and other dimensions of the casing and tubing to ensure that it meets the design requirements.
Material testing: Material testing of oil casing and tubing is one of the key steps to ensure its quality. Commonly used material testing methods include chemical composition analysis, metallographic structure analysis, hardness testing, etc. These testing methods can check whether the composition of the casing and tubing material meets the standard requirements and whether its organizational structure is uniform and dense. Pressure test: Oil casing and tubing needs to withstand high pressure during drilling operations, so pressure test is one of the essential quality inspection methods. By installing the casing on special testing equipment, applying a certain amount of pressure, and observing whether there are leaks, deformations, etc., the casing and tubing is ensured that it can withstand the expected working pressure.
Magnetic particle testing: Magnetic particle testing is a commonly used non-destructive testing method used to detect cracks, defects and other problems on the surface of casing and welds. By coating magnetic powder on the surface of the casing and tubing and then applying a magnetic field, the accumulation of magnetic powder at cracks or defects can be observed to determine whether there is a problem with the casing.
In short, the quality inspection of oil casing and tubing is an important link to ensure the safety and smooth progress of drilling operations. Through methods such as visual inspection, dimensional measurement, material testing, pressure testing and magnetic particle testing, the quality of the casing can be comprehensively and accurately evaluated, problems can be discovered and solved in a timely manner, and the smooth progress of oil drilling and paralleling operations can be ensured.(www.baowi-steel.com)