Patent ID: 11898442
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 7:
8. A system for formation pore pressure prediction, the system comprising:
a database comprising a historical data set from an offset well, the historical data set comprising:
a historical input parameter set, and
historical pore pressure;

at least one processor configured to:
receive an input parameter set while drilling a well, the input parameter set comprising:
surface drilling parameters,
logging while drilling parameters, and
advanced mud gas measurements;

obtain the historical input parameter set from the database;
identify at least one input parameter that is considered non-relevant by determining that the at least one input parameter that is considered non-relevant has a mean squared error greater than a threshold selected for the historical pore pressure;
generate, from the input parameter set, a reduced input parameter set, by eliminating the at least one input parameter of the input parameter set that is considered non-relevant;
predict the pore pressure by applying a machine learning model to the reduced input parameter set; and
guiding the drilling of the well using the predicted pore pressure;
wherein determining the at least one input parameter of the input parameter set that is considered non-relevant for predicting the pore pressure comprises at least one of:
a linear correlation filter,
a neighborhood components analysis, and
a forward selection and backward elimination.