Brittle-burst strength for well system tubular integrity

A method comprising:

• receiving, by a computing device, data relating to a tubular in a well system that includes a wellbore, the data comprising characteristics of the tubular and characteristics of an environment of the well system;
• executing, by the computing device, a first module to determine a first set of outputs based on the data, the first set of outputs comprising pressure conditions and temperature conditions relating to the tubular;
• executing, by the computing device, a second module to determine a second set of outputs based on the first set of outputs, the second set of outputs comprising a crack-initiation fracture pressure of the tubular;
• determining, by the computing device, fracture toughness of the tubular in the environment of the well system, the fracture toughness of the tubular in the environment of the well system being proportional to a combination of a fracture toughness of the tubular in air, the first set of outputs, a concentration of a solution of hydrogen sulfide in the environment, and a pH of the solution of the hydrogen sulfide in the environment;
• executing, by the computing device and based on the first set of outputs and the fracture toughness of the tubular in the environment of the well system, a third module to determine a third set of outputs, the third set of outputs comprising a crack-propagation fracture pressure of the tubular;
• identifying, by the computing device, a brittle-burst strength of the tubular by comparing the second set of outputs and the third set of outputs to a burst strength of the tubular, the brittle-burst strength being the lowest value among value for the crack-initiation fracture pressure, the crack-propagation fracture pressure, and the burst strength;
• and
• adjusting, by the computing device and using the brittle-burst strength of the tubular, one or more parameters of the tubular to optimize a wellbore operation associated with the well system, wherein the adjusting comprises outputting a command configured to cause the tubular to be repositioned with respect to the wellbore.

A non-transitory computer-readable medium comprising instructions that are executable by a processing device for causing the processing device to perform operations comprising:

• receiving data relating to a tubular in a well system that includes a wellbore, the data comprising characteristics of the tubular and characteristics of an environment of the well system;
• executing a first module to determine a first set of outputs based on the data, the first set of outputs comprising pressure conditions and temperature conditions relating to the tubular;
• executing a second module to determine a second set of outputs based on the first set of outputs, the second set of outputs comprising a crack-initiation fracture pressure of the tubular;
• determining fracture toughness of the tubular in the environment of the well system, the fracture toughness of the tubular in the environment of the well system being proportional to a combination of a fracture toughness of the tubular in air, the first set of outputs, a concentration of a solution of hydrogen sulfide in the environment, and a pH of the solution of the hydrogen sulfide in the environment;
• executing, based on the first set of outputs and the fracture toughness of the tubular in the environment of the well system, a third module to determine a third set of outputs on the first set of outputs, the third set of outputs comprising a crack-propagation fracture pressure of the tubular;
• identifying a brittle-burst strength of the tubular by comparing the second set of outputs and the third set of outputs to a burst strength of the tubular, the brittle-burst strength being the lowest value of values for the crack-initiation fracture pressure, the crack-propagation fracture pressure, and the burst strength;
• and
• adjusting, using the brittle-burst strength of the tubular, one or more parameters of the tubular to optimize a wellbore operation associated with the well system, wherein the adjusting comprises outputting a command configured to cause the tubular to be repositioned with respect to the wellbore.