triplex mud pump displace volume factory

Rig pump output, normally in volume per stroke, of mud pumps on the rig is  one of important figures that we really need to know because we will use pump out put figures to calculate many parameters such as bottom up strokes,  wash out depth, tracking drilling fluid, etc. In this post, you will learn how to calculate pump out put for triplex pump and duplex pump in bothOilfield and Metric Unit.

Bourgoyne, A.J.T., Chenevert , M.E. & Millheim, K.K., 1986. SPE Textbook Series, Volume 2: Applied Drilling Engineering, Society of Petroleum Engineers.

Positive displacements pumps are generally used on drilling rigs to pump high pressure and high volume of drilling fluids throughout a drilling system. There are several reasons why the positive displacement mud pumps are used on the rigs.

The duplex pumps (Figure 1) have two cylinders with double acting. 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.

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).

On the other hand, when the piston rod is moved backward drilling fluid is still pumped. The other intake and discharge valve will be opened (Figure 3).

The triplex pumps have three cylinders with single acting. The pistons are moved back and pull in drilling mud through open intake valves. When the pistons are moved forward and the drilling fluid is pushed out through open discharge valves.

On the contrary when the piston rods are moved backward, the intake valve are opened allowing drilling fluid coming into the pump (Figure 6). This video below shows how a triplex mud pump works.

Because each pump has power rating limit as 1600 hp, this will limit capability of pump. It means that you cannot pump at high rate and high pressure over what the pump can do. Use of a small liner will increase discharge pressure however the flow rate is reduces. Conversely, if a bigger liner is used to deliver more flow rate, maximum pump pressure will decrease.

As you can see, you can have 7500 psi with 4.5” liner but the maximum flow rate is only 297 GPM. If the biggest size of liner (7.25”) is used, the pump pressure is only 3200 psi.

Finally, we hope that this article would give you more understanding about the general idea of drilling mud pumps. Please feel free to add more comments.

The CLM 7½" x 10" Triplex Hydraulic Mud Pump will pump 75% more rated flow than a 5½" x 10", at almost twice the pressure, is 29.7" shorter, and weighs less than 1/3 as much. It takes four 5½" x 10" pumps (each lined with 4" liners = 24,260 lbs) to match the rated pressure and volume of one CLM 7 ½" x 10" triplex!

Centerline Manufacturing is committed to the highest level of customer service quality.  Every Centerline pump is comprehensively and repeatedly tested at diverse pressure levels to assure that it goes to our customer in perfect operational order. Centerline technicians work to ensure that our customers fully understand the operation of the model being delivered.  If a customer"s pump is down, we understand the importance of timely response and parts availability.  Centerline technicians will assess the problem and make repairs to bring the pump back into new specification. The Centerline mud pump technicians are well versed and qualified to operate and repair any product that is provided to the customer.

GDEP is the original creator of the drilling pump and continues to set the standard for durable, high-quality drilling pumps that can withstand the world’s toughest drilling environments. Starting with our PZ7 and rounding out with the market"s most popular pump, the PZ1600, our PZ Series of pumps are the perfect choice for today"s high-pressure drilling applications.

BW250 triplex mud pump is horizontal,tri-cylinder, reciprocating triplex-acting piston pump. Could be adjusted to different pressure and flow. Its max pressure can reach as high as 6 Mpa (60 Bar).

It has the main features of multe-speed shaft gears, power saving, simple and compact design, light in. weight and high efficiency, and durability, easy and safe in operation, maintenance and low operation costs. it works usually under the conditions of(18-25)sec.mud viscosity not more than 4% sand laden in mud, (7-10)PH-value and(0-50)℃ temperature

BW-250 Mud Pumps is equipped with drilling rigs to drill holes with mud. During drilling mud pump pumps slurry to the hole to provide coat to the wall, to lubricate the drilling tools and to carry the rock debris up to the ground. It is applied to geological core drilling and prospecting drilling with depth less than 1500 meter.

Single Acting Triplex pumps come with three cylinders and are commonly used for various applications requiring low to medium flow rates including mud pumping, cement pumping, salt water disposal, descaling, high pressure pumping, Frac pumping and pipeline systems for the Oil & Gas, Agriculture, Mining, Municipal and Manufacturing sectors. We have new, used and rebuilt API 674 triplex pumps of all leading manufacturers like Union, Gaso, Emsco, Apex and Wheatley.

Today"s economy requires that greater attention be given to improve performance of drilling equipment. Understanding the operation of the piston (slush) pump and the associated mud system is vital to improving operations. Improved operation of the piston pump is achieved by providing a mud supply which insures proper filling of the piston pump on each stroke. Testing in a high pressure mud pump research laboratory provided the substantiation of the analytical design approach presented in this paper.Noisy or Normal Pump Operation

Unusual noise or knocks resulting from various problems. Some are mechanical; parts are loose or broken and must be repaired. One unusual knock is called valve hammer1; which is usually a result of valve and spring design and pump speed. This can also be the result of wear or broken springs. A common noise is hydraulic knock; this is a result of inadequate suction pressure at the operating speed. It results in separation of fluid and piston; this results in water hammer.2 Air intrusion may also cause sound effects where large amounts sometimes cause knocking and small amounts produce a quietening effect. Leaks causing air intrusion should be sealed throughout the piping system and air traps avoided. Air entering through pump packing or pistons on triplex pumps 3 can be eliminated by using new parts or by keeping the cylinder pressure above atmospheric pressure at all times throughout the stroke.Required Suction Pressure Fundamentals

A specific amount of pressure is necessary to force the mud from the tank through the suction piping system into the pump through the valves and against the piston in order to keep the line full of mud. If the line is not full at every point, a void will occur. These voids begin to occur at a particular pump speed. The piston speed varies throughout the stroke. If a void has developed, filling occurs in the last portion of the stroke. When the fluid catches the piston, a collision and knock occur.

The pressure needed to prevent a void is greatest at the start of the stroke. This happens because the piston velocity and the mud in the line to a cylinder is standing still; inertia is high and the mud is difficult to move or accelerate. A large amount of pressure is required to start motion at the rate at which the power end is moving the piston. Pressure is needed to overcome the piping friction and to overcome the inertia of the mud.

Well service pumps are used in oil wells where large amounts of crude oil are extracted. These pumps are specifically designed for a variety of industrial well service applications such as fracking, acidizing, and matrix stimulation. Both triplex and quintuplex pumps are used for such operations.

Triplex Frac Pumps: Triplex frac pumps are used where a high-pressure stream with great accuracy is required. It not only offers great performance but also ensures operational safety in various applications. Because of their positive displacement feature, triplex frac pumps always deliver a predictable volumetric flow regardless of the pressure. It happens because the inlet stroke gives a fixed volume of liquid and physically moves it in and out of the pump without any loss or inefficiencies. The performance of the pump is also free from specific gravity which allows the input power and output flow to be unaffected by the liquid density.

Quintuplex Frac Pumps: High-performance quintuplex pumps are able to deliver up to 2700bhp. Such pumps are highly effective at high rod load and sand out situations. Quintuplex frac pumps also involve state of the art lubrication of all the moving parts. With their superior valve design, they are able to reduce fluid end erosion that also extends the life of the fluid end. The unique design of the suction valve retainer significantly reduces the fatigue life of the liquid and reduces operating costs too. Quintuplex frac pumps are able to provide increased fluid capacity at slower speeds which extend the life of all the major components.

At Shale Pumps, we understand the need for quality and performance. We only prefer high-quality triplex and quintuplex pumps for exceptional well service and other drilling applications.

Higher rod-load capacity that results in increased fluid pumping volume. The durability of the pump can also be increased by maintaining and equivalent pumping volume at slower speeds rather than maintaining a shorter stroke.