Abstract: A method for taking into account the effects of complex conveyance method model technique results in real time in a wellbore operation, the method including, in certain aspects, calculating with a conveyance method model technique a series of data points based on wellbore data (actual and/or predicted), modeling the relationship between the series of data points and the wellbore data using a simple mathematical model technique to develop a model for predicting a wellbore operations parameter, and using the model to predict a wellbore operations parameter; and, in one aspect, a procedure for drilling a wellbore in the earth using such a method to predict, among other things, weight on bit, torque on bit and stretch of a conveyance system (coiled tubing, wireline, drill pipe string) used to move the bit in a wellbore.