Patent ID: 11933109
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method, comprising:
for each of a plurality of past bit runs:
obtaining a measured rock property value and a measured drilling variable value for a past bit run, and
obtaining a measured dull grade for a past drill bit used for the past bit run;

determining parameters of a functional relationship between the measured dull grade, a bit run time, the measured rock property value, and the measured drilling variable value;
predicting a rate-of-penetration and a drill bit footage for a current drill bit, and a predicted dull grade for a future bit run using the current drill bit; and
extracting the current drill bit for replacement with a replacement drill bit at a time based, at least in part, on the predicted dull grade.