Torque and Drag Optimization By Using Drilling Simulator: The Effect of Torque and Drag on the Drill String in Vertical and Directional Wells by Using Drilling Simulator

This work show the relationship between density, friction factor, number of heavy weight drill pipe, number of drill collar, revolution per minute and weight on bit, Direction tools and Torque & Drag in cased and open hole and how the hole geometry effecting on Torque and Drag by using drilling simulator. The procedures and options currently available for this evaluation are reviewed. The central role of torque-drag calculations in this evaluation is well recognized. The Torque and Drag is still one of the important problems faced during drilling operations. In facts, the factors effecting on Torque and Drag are very complicated in directional wells. Some of them have been played much more attention to, but some of them a little. Several mechanisms may be involved, such as in-situ stress concentration, pore-pressure diffusion, plasticity, anisotropy, capillary effects and osmosis for shale, circle repeated load, thermal effects, and so on.This work explains in detail how the Torque and Drag prediction by using drilling simulator will optimize the drillstring failure during the drilling operation. Where the total non-productive time was reduced with roughly 50% compared to earlier.