| This thesis successfully adapts and expands the thesis submitted to the University of Wyoming in 1988 by Jeff Smith for the prediction of torque and drag in deviated well bores. Four trajectory routines, a build and hold, a build-hold and drop, a continuous build and a catenary curve method are offered to maximize the predictive capabilities. In addition, the ability to predict torque and drag while moving axially and rotating simultaneously as well as torque prediction while drilling are included. Furthermore, a routine for the relocation of the drill string within the well bore is also offered. When all of the options available within this model are utilized, the predictive capabilities exhibit extremely accurate results, including an increase of torque and drag when a well is cased. |
