Design Method and Reliability Analysis of Deep Well Casing Strength

With the development of the petroleum industry, more and more oil fields are beginning to engage in deep well exploration. Deep well casing is an important drilling equipment in oilfield development, which is a key factor in ensuring wellbore stability, maintaining production safety, and improving production capacity. However, due to the high requirements for equipment in drilling operations, problems in the design, manufacturing, and installation of deep well casing can easily lead to issues such as poor wellbore stability, oil leakage, and drilling accident safety. Therefore, the performance and reliability evaluation of deep well casing has become a key issue. This article summarizes the research progress of deep well casing strength design methods and reliability analysis through extensive research on existing literature. The main content includes the working principle, design standards, and advantages and disadvantages of different methods of deep well casing, aiming to provide reference for the design and use of deep well casing.