8 Q. No. 2: /A/Considering the following data: (Using the Power Law Model). Hole diameter =12.5-in, Drill pipe=4.5 OD/3.826-in ID, Length=8100 ft. Drill collars=7 5/8-in OD/2.625- in ID. Length=810 ft. Flow rate= 412 gpm. Bit used, 3cones with dn = in. Surface Equipment Type-2 (E-9.6*10-5). Pressure drop inside and outside drill pipe=253 psi. Mud weight=11.87 ppg. 600 = 75 And 300 = 51. Find: = : 19 (1) HHP of the Pump (where ey = 0.9 and em = 0.85). (2)Bottom hole circulating pressure (BHCP), and (20 marks) (3) Equivalent circulating density (ECD). mols