Patent ID: 11959374
Assignee: LANDMARK GRAPHICS CORPORATION
Field: Control (Instruments)
Classification: CPC E  G | IPC E  G

Claim 8:
9. The method of claim 1, wherein the tracking and the identifying are performed for values calculated for each of a plurality of coefficients of the predictive model, and the method further comprises:
determining a sensitivity of each of the plurality of coefficients to the downhole event, based on an amount of the percentage change in the values of that coefficient between consecutive stages of the drilling operation;
selecting one or more of the plurality of coefficients as regressors for estimating occurrences of the downhole event during subsequent drilling operations, based on a relative sensitivity of each coefficient to the downhole event; and
transmitting, to the database, regression data including the tracked percentage change in the values of the selected one or more coefficients to be stored within the database in association with the downhole event.