Selecting the right oil steel casing pipe requires considering the following key aspects:1. Well Condition AnalysisGeological Conditions:Understand the formation's hardness, stability, and the presence of faults. For example, in soft formations, steel casing with good collapse resistance is desirable; in hard formations, wear resistance is more important.For formations containing corrosive media, such as high-sulfur oil and gas fields, special steel casing with excellent corr...