12/4/2023 0 Comments Drill mud pumpConversely, if a bigger liner is used to deliver more flow rate, maximum pump pressure will decrease. Use of a small liner will increase discharge pressure however the flow rate is reduces. It means that you cannot pump at high rate and high pressure over what the pump can do. Hydraulic Horse Power (HPP) formula is listed blow HHP= (P x Q) ÷1714īecause each pump has power rating limit as 1600 hp, this will limit capability of pump. Calculations Related to Positive Displacement Mud Pumps Hydraulic Horse Power (HPP) Triplex pumps are more popular than duplex pumps because of being lighter, smoother discharge and lower maintenance cost. Which one is the most practical mud pump on the rig nowadays? This video below shows how a triplex mud pump works. On the contrary when the piston rods are moved backward, the intake valve are opened allowing drilling fluid coming into the pump (Figure 6). When the piston rods are moved forward, the intake valves are in close position and the discharge valves are in open position allowing fluid to discharge (Figure 5).įigure 6 Position of Piston Rod and Fluid Movement of Triplex Pump (Suction) The following diagrams demonstrate how the triplex mud pumps work.Įach diagram shows the action of one cylinder.įigure 5 – Position of Piston Rod and Fluid Movement of Triplex Pump (Discharge) When the pistons are moved forward and the drilling fluid is pushed out through open discharge valves. The pistons are moved back and pull in drilling mud through open intake valves. The triplex pumps have three cylinders with single acting. Triplex Pumps – 3 cylinders, single acting The other intake and discharge valve will be opened (Figure 3). On the other hand, when the piston rod is moved backward drilling fluid is still pumped. When the piston rod is moved forward, one of intake valves is lift to allow fluid to come in and one of the discharge valve is pushed up therefore the drilling mud is pumped out of the pump (Figure 2).įigure 3 -Position of Piston Rod and Fluid Movement of Duplex Pump The following diagrams demonstrate how duplex mud pumps work.įigure 2 – Position of Piston Rod and Fluid Movement of Duplex Pump It means that pistons move back and take in drilling mud through open intake valve and other sides of the same pistons, the pistons push mud out through the discharge valves. The duplex pumps (Figure 1) have two cylinders with double acting. Duplex Pumps – 2 cylinders, double acting They are more reliable and able to pump at tough conditions.ĭuplex and Triplex pumps are positive displacement pumps which are commonly used in the oilfield.There are wide ranges for pressure and flow rate. The pumps can work with fluids with high solid content. There are several reasons why the positive displacement mud pumps are used on the rigs. Positive displacements pumps are generally used on drilling rigs to pump high pressure and high volume of drilling fluids throughout a drilling system.
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