Patent ID: 7359844

Claim:
A method of forming a model of subsurface earth formations as well drilling operations are proceeding through a wellbore in the formations based on real time formation telemetry data sensed with a well drilling tool in the wellbore, comprising the steps of: storing in a computer memory existing models of the subsurface formations of interest and the stratigraphic locations of the formations of interest; receiving real time formation telemetry data measurements from the well drilling tool; forming estimates in the computer of formation geologic attributes at the location of the well drilling tool in the wellbore from the real time formation telemetry data while well drilling is proceeding in the wellbore; comparing the computer estimates of formation geological attributes at the location of the well drilling tool in the wellbore with at least one of the stored existing models of the subsurface formations to determine if a geologic indication of interest and the location thereof in the formations differs from the at least one of the stored existing models; if the geologic indication of interest differs from the at least one of the stored existing models with which it is compared, generating a new model of the well based on the received real time formation telemetry data by performing the steps of updating the structure grids of the formation of interest and substituting the updated structure grids for the structure grids of an existing stored geologic model; and providing a visible display of the generated new model of the well to guide the drilling operation.