... bigger, so it can receive higher WOB and high reliability. 4.Hydraulic DesignSmall angled watercourse design increased the shirttail thickness and ... Optirnized hydraulics structure improves the clearing capability and increases ROP. 5. Product ApplicationIt is suitable for sidetracking, deep well drilling and ... 8104.8517,527,537,617 4 1/2114.3517,527,537,6174 5/8117.5517,527,537,6174 3/4120.6517,527,537 ...