W Well VIN is a drilling vertical well with phase of 8 1/2 " drilled from2097 to 5555 ft. Evaluation of the data needed hudrolika drilling hydraulics andphysical properties of the mud like flow rate (Q), mud density (ρ), plasticviscosity (PV), yield point (YP) and data other drilling.The purpose of mud hydraulic is to determine the in the annulus anddetermine the pressure loss of drilling mud circulation. Pressure loss can changethe value of reynolds number and flow rate so flow partern have to be designedto avoid turbulent flow. If turbulent flow was happened, the friction effect willbe greater than laminar flow. It is therefore necessary to study the hydraulicsplanning before drilling is done and then do an analysis to determine whether theefficiency of the hydraulics which has been designed and flow rate that occurredin a series of drilling has been running optimally.Optimization is done by adjusting the amount of pressure on the bit andthe flow rate so that the resulting optimum conditions. BHHP optimum orsuccessful if the BHHP at bit is around ± 65 % . The valueBHHP with HPS is62 % . So bit hydraulics optimization using BHHP is successful.