Predicting torque and drag buckling behavior of a drill string and casing

A computing system, comprising:

• one or more processors;
• and
• a memory system comprising one or more non-transitory computer-readable media storing instructions that, when executed by at least one of the one or more processors, cause the computing system to perform operations predicting buckling behavior in a torque and drag analysis of a tubular string in a wellbore, the operations comprising:
• performing a first finite element analysis on the tubular string;
• identifying a possible buckling zone in the tubular string based at least in part on the first finite element analysis;
• generating a plurality of segments based on the possible buckling zone;
• performing a second finite element analysis on one or more segments of the plurality of segments, wherein the second finite element analysis is different than the first finite element analysis;
• identifying incremental changes between the first finite element analysis and the second finite element analysis;
• and
• applying the incremental changes to the first finite element analysis to produce an updated first finite element analysis.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a computing system, cause the computing system to perform operations predicting buckling behavior in a torque and drag analysis of a tubular string in a wellbore, the operations comprising:

• performing a first finite element analysis on the tubular string in a wellbore;
• identifying a possible buckling zone in the tubular string based at least in part on the first finite element analysis;
• generating a plurality of segments based on the possible buckling zone;
• performing a second finite element analysis on one or more segments of the plurality of segments, wherein the second finite element analysis is different than the first finite element analysis;
• identifying incremental changes between the first finite element analysis and the second finite element analysis;
• and
• applying the incremental changes to the first finite element analysis to produce an updated first finite element analysis.