Patent ID: 11920413
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. A system, comprising:
a computer processor configured to:
receive a mechanical earth model (MEM) for a subterranean region, wherein the subterranean region comprises a location for a planned wellbore;
determine a critical collapse pressure (CCP) for the planned wellbore using an inclination angle and the MEM;
determine an initial mud weight based, at least in part, on the CCP;
generate a breakout analysis using the initial mud weight, the MEM and a numerical modeling algorithm;
iterate, or recurse, until a stopping condition is met:
update the inclination angle of the planned wellbore,
update the CCP based, at least in part, on the updated inclination angle and the MEM, and
update the breakout analysis using, at least in part, the initial mud weight, the updated CCP, the MEM, and the numerical modeling algorithm, wherein the breakout analysis comprises a breakout depth;

select the updated CCP based, at least in part, on the updated inclination angle that meets the stopping condition; and
calculate a final mud weight for the planned wellbore based, at least in part, on the updated CCP; and

a mud system, configured to:
condition a drilling mud to the final mud weight.