Oilfield well planning and operation

A method of performing a drilling operation for an oilfield, the oilfield having a drilling system for advancing a drilling tool into a subterranean formation, comprising:

• determining a plurality of survey factors for at least one wellsite of the oilfield;
• determining a plurality of drilling factors corresponding to at least one section of a planned trajectory of the at least one wellsite;
• configuring a drilling model for each of the at least one wellsite based on the plurality of survey factors and the plurality of drilling factors;
• collecting real-time drilling data to generate a predicted drilling performance based on the drilling model;
• determining measured drilling performance using real-time drilling data;
• and
• selectively adjusting the drilling model to generate an adjusted drilling model in real-time by comparing the measured drilling performance to the predicted drilling performance.

A computer readable medium storing instructions for performing a drilling operation for an oilfield, the instructions comprising functionality to:

• advance a drilling tool into a subterranean formation of the oilfield,
• collect real-time drilling data from the drilling tool;
• obtain a rig state for a rig in which the drilling tool is located;
• and
• analyze drilling tool performance of the drilling tool in real-time based on the rig state.