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

Claim 7:
8. A system comprising:
a borehole;
a past drill bit to increase a length of the borehole;
a computer system, configured to:
receive a measured rock property value and a measured drilling variable value for a past bit run for each of a plurality of past bit runs,
receive a measured dull grade and a bit run time for the past drill bit used for the past bit run for each of a plurality of past bit runs,
determine parameters of a functional relationship between the measured dull grade, the bit run time, the measured rock property value, and the measured drilling variable,
predict a predicted dull grade for a future bit run using a current drill bit, and
predict a rate-of-penetration and a drill bit footage for the current drill bit; and

a drilling system attached to the current drill bit configured to:
convey and activate the current drill bit, and extract the current drill bit for replacement with a replacement drill bit at a time based, at least in part, on the predicted dull grade.