ve 0. No. :/AA double acting duplex pump with a 2.5 in rod and a 20 in stroke is to be operated at 60(SPM) for drilling down to 10 000 ft. The maximum available pump hydraulic horsepower is 1360 hp. The pump delivery pressure for optimum hydraulics is 3423 psi. Determine the liner size to be used with volumetric efficiency 90%. (13 marks) Lachtad