CORROSION AND TENSILE TESTING STUDY OF HIGH TEMPERATURE AND HIGH PRESSURE WELL INJECTION AND PRODUCTION INTEGRATED STRING

In this study, corrosion experiments were conducted on three commonly used materials for integrated strings (L80, 2205, P110) using the hanging strip corrosion method at high temperature and high pressure. Subsequently, high temperature tensile tests were performed on the three materials, and the variations in parameters such as corrosion rate, yield strength, and tensile strength under different experimental tem-- peratures were compared and analyzed. The experimental results indicate that with increasing experimental temperature, the corrosion rate of all three materials shows an upward trend, while the yield strength and tensile strength exhibit a decreasing trend. The P110 material not only has the highest yield strength but also the lowest corrosion rate under different environmental temperatures, demonstrating better material characteristics in the operating environment.