Oil casing pipe is an important equipment in oil wells, which is used to ensure the stability of the well wall and protect the oil pipe. Therefore, it is very necessary to conduct regular inspections of oil casing pipe. The following will introduce some commonly used oil casing pipe inspection technologies and methods:

1. Magnetic detection technology:
Use magnetic detectors to detect defects such as cracks, corrosion and wear on the surface of the casing pipe. By analyzing the magnetic data, the health of the casing pipe can be determined, and maintenance and repair can be carried out.

2. Ultrasonic detection technology:
Use ultrasonic detectors to conduct a comprehensive scan of the casing pipe to detect defects and faults inside the casing pipe. Ultrasonic detection technology has the characteristics of high resolution and non-destructiveness, and is suitable for various types of casing pipe.

3. X-ray detection technology:
Use X-ray equipment to perform transmission detection on the casing pipe to detect cracks, corrosion and deformation inside the casing pipe. X-ray detection technology can provide high-quality detection results and evaluate the overall condition of the casing pipe.

4. Ultrasonic resonance technology:
Use the principle of ultrasonic resonance to detect the casing pipe and evaluate the strength and rigidity of the casing pipe. Ultrasonic resonance technology can provide fast and accurate test results and comprehensively evaluate the structure and performance of the casing pipe.

5. Magnetic particle detection technology:
Use magnetic particle detectors to detect surface defects of casing pipe, detect cracks, wear and corrosion on the casing pipe surface. Magnetic particle detection technology does not need to contact the object to be detected and is applicable to various types of casing pipe.

6. Magnetostrictive detection technology:
Use magnetostrictive sensors to perform contact detection on casing pipe and measure the displacement and deformation of casing pipe. Magnetostrictive detection technology has high precision and high sensitivity and is suitable for monitoring small changes in casing pipe.

In general, there are various detection technologies and methods for oil casing pipe, each of which has its own characteristics and scope of application. Appropriate technology can be selected for detection and evaluation according to specific circumstances. Through regular inspection and maintenance, the stability and reliability of oil casing pipe can be ensured, and the smooth progress of oil production can be guaranteed.