Modeling torque and drag: Accurately predicting tension, compression and torque limits for horizontal openhole completion systems can reduce the risk of serious well damage

摘要

Frictional drag often prevents successful installation of a completion string (CS) to the total depth (TD) of a well in openhole, horizontal well bores. Without an accurate assessment of the various stresses to which the CS can be subjected during installation, the operator can risk serious well damage or possible well abandonment. In addition, gravel packing in horizontal sections presents other special challenges, because pumping procedures may push the CS uphole.