triplex mud pump design factory

Mud pumps are the heart of a drilling operation. TSM designs and manufactures extremely reliable and easy-to-maintain mud pumps, eliminating unnecessary maintenance and downtime.

Manufactured to withstand the toughest drilling and environmental conditions, our K-Series triplex mud pumps are ideal for all drilling applications. This legacy product features a balanced forged-steel crankshaft and Southwest Oilfield Products ‘L” Shaped modules which is essential to minimize wear, noise, and operating vibrations. These attributes are essential when drilling deeper high pressure formations, long laterals and when handling corrosive or abrasive fluids and slurries.

Every American Block triplex mud pump is manufactured and fully load tested before leaving our manufacturing campus, and is available in sizes ranging from 800 HP to 2200 HP. The American Block K1600 HP Mud Pump is also available in a 2000 HP up-grade version, when more HP is needed in the same 1600 HP footprint.

DRILLMEC’s GD Series is the new generation of Gear Driven Triplex Mud Pumps in the ranging from 1600 to 2400 hp for both onshore and offshore drilling operations.

The direct gear driven transmission between the AC motor and the cranshaft together with the top mounted configuration gives to the GD Series Mud Pumps a very compact design despite their high volume and high pressure capabilies.

Since the modern mud (or slush) pump was built approximately 60 years ago, the industry has widely accepted the three cylinder or triplex style pump. Triplex mud pumps are manufactured worldwide, and many companies have emulated the original design and developed an improved form of the triplex pump in the past decade.

As in all single acting pumps, the piston exerts a load on the crankshaft. The load is then transmitted to the crankshaft main bearings, which are set in their retainers in the pump frame or housing (see Figure 2).

That the crankshaft is subjected to extreme bending loads and stress concentration areas is one of the drawbacks of the triplex design. Experience shows that all triplex pumps eventually exhibit crankshaft cracking if the operator is using the pump at higher loads and pressures, which is now common as drilling contractors are facing deeper, longer sections to drill. In the past, drillers rarely pushed the performance limitations of triplex pumps; 5,000 psi rated pumps were usually only operated at a maximum of 2,800 psi 90 percent of the time. Now contractors are encouraged to run pumps at the much higher pressures around 4,300 psi, only leaving a safety margin below the pressure relief valve setting. This means the crankshaft is subjected to extended maximum load, which inevitably shortens time to failure, probably exponentially.

Some may suggest that an increase in the number of pistons to improve flow rate will also reduce piston load. Although the middle piston load may be reduced for the same overall pump horsepower, the distance from the main bearings to the middle cam increases, which is not advantageous. For example, a five cylinder pump with the middle cam 50 in from the main bearing will have the same bending moment as a triplex with a 30 in middle cam to bearing distance. However, installing bearings close to the cams can reduce the cyclic failure problems on any pump.

For the drilling industry, the problem with this design is that few have managed to design a crankshaft where bearings can be installed anywhere other than at the crankshaft ends. Consequently, most pumps currently available have crankshafts unsupported close to the middle cam. With the middle area of the crankshaft unsupported, crankshaft failure is inevitable.

A triplex pump with a large load acting on the middle of the crankshaft of approximately 120,000 lbs and a typical distance of about 30 in from middle cam to either main bearing will exert a bending moment of 300,000 lb-ft on the crankshaft adjacent to the main bearing. If the bearing is not spherical, the bending moment where the shaft meets the bearing will coincide with the point on the shaft that the crank can no longer bend because it is restricted by the fixed bearing, which creates huge stress concentration. That load comes and goes cyclically every revolution of the pump. If the pump is rotating at 100 rpm or strokes, then in one week of drilling the crank will experience one million cycles of 300,000 lb-ft effectively switching on and off.

Another symptom of crankshaft deflection or bending is abnormal main gear wear patterns. The high unsupported load in the middle of the crankshaft effectively bows the shaft and consequently the bull gear is moved off alignment, and a strange wear pattern may appear on the gears. Although this is an undesirable occurrence, it is of little importance compared with crankshaft failure. It does explain abnormal wear on a pump used continuously at high pressure.

A pump that addresses these issues may be the solution. A quadraplex has minimal bending moments due to the close proximity of the main bearings to every cam (see Figure 7).

A fully assembled crankshaft is the best and only way to install multiple bearings close to the cams. Even though there is minimal flexure in this design, spherical bearings eliminate stress concentration or point loading. With cam to bearing distances no more than 10 in, the bending moment on a quadraplex crankshaft will be one quarter that of the triplex or five cylinder pump.

In an environment where few advances have been made in mud pump technology in the last 50 years, designers in the mud pump sector of the drilling industry can develop workable solutions to the problems and limitations inherent in triplex pumps.

The future of mud pump design will involve a solution to excessive crankshaft bending moments and address other needed areas of improvement, including piston speed, module replacement in the field, quality of discharge pressure and smoothness of flow-all combined with ease of transportation.

The NOV FC-1600 Triplex Mud Pump is made of rugged Fabriform construction and designed for optimum performance under extreme drilling conditions. It is compact and occupies less space, yet delivers unequaled performance. The pumps are backed by several decades of design and manufacturing experience, and are considered leaders in the field.

NOV FC-1600 Triplex Mud Pump is conservatively rated at relatively low rpm. This reduces the number of load reversals in heavily stressed components and increases the life of the fluid end parts through conservative speeds and valve operation.

The NOV FC-1600 Triplex Mud Pump design provides an inherently balanced assembly. No additional counterbalancing is required for smooth operation. No inertia forces are transmitted to the pumps’ mountings.

A Triplex Mud Pump sometimes referred to as a drilling mud pump or mud drilling pump. NOV FC-1600 Triplex Mud Pump is a reciprocating piston/plunger pump designed to circulate drilling fluid under high pressure (up to 7,500 psi) down the drill string and back up the annulus. A mud pump is an important part of the equipment used for oil well drilling.

It’s time for piston mud pumps to enter the 21st century. Centerline Mud Pumps utilize common, industry-proven, and easily obtained fluid end parts. Designed to give you better flow capacity, pressure, size and weight advantages, that you won’t find anywhere else. Centerline Mud Pumps are built to exceed the most demanding specifications in the industry. These pumps are built to last.

Centerline Manufacturing is pleased to introduce their line of hydraulic drive mud pumps. Since 1983, Centerline Manufacturing has been involved in the design, manufacture, and production of drilling equipment, support equipment, and tooling for the water well industry. Our line of mud pumps include several new milestone technologies not found anywhere else in the industry.

Provides 150-180* GPM (Gallon Per Minute) of standard mud flow at 350 psi continuous. The 180 GPM is a provisional condition that requires the mud pressure to be below 275 psi and the hydraulic oil temperature below 165 degrees F.

Provides 300-360* GPM (Gallon Per Minute) of standard mud flow at 350 psi Continuous.  The 360 GPM is a provisional condition that requires the mud pressure to be below 275 psi and the hydraulic oil temperature below 165 degrees F.

Provides 450-540* GPM (Gallon per Minute) of standard mud flow ar 350 psi Continuous.  The 540 GPM is a provisional condition that requires the mud pressure to be below 275 psi and the hydraulic oil temperature below 165 degrees F.

It"s time for piston mud pumps to enter the 21st century. Centerline hydraulic drive mud pumps utilize common, industry-proven, and easily obtained fluid end parts. Designed to give you better flow capacity, pressure, size and weight advantages, that you won"t find anywhere else. Built to exceed the most demanding specifications in the industry, these pumps are built to last.

Centerline Manufacturing is pleased to introduce their line of hydraulic drive mud pumps. Since 1983, Centerline Manufacturing has been involved in the design, manufacture, and production of drilling equipment, support equipment, and tooling for the water well industry. Our line of mud pumps include several new milestone technologies not found anywhere else in the industry.

Triplex plunger-type mud pumps feature a reciprocating, positive displacement pump design utilizing three plungers to safely transfer high-viscosity fluids under high pressure over an extended depth. Although they have many industrial applications, these pumps have become an essential part of oil well drilling rigs where they’re used to provide smooth discharge of mud and debris from oil wells.

In addition to their use in drilling and well service operations, mud pumps are also frequently used to handle corrosive or abrasive fluids, as well as slurries containing relatively large particulates, in applications like commercial car washes, wastewater treatment, cementing, and desalination operations.

DAC Worldwide’s Representative Triplex, Plunger Mud Pump Dissectible (295-418) is an economical, conveniently-sized triplex plunger-type mud pump assembly that teaches learners hands-on maintenance activities commonly required on larger mud pump assemblies used in upstream oilfield production operations.

For example, mud pump assembly is used on well sites maintain downhole backpressure, to lubricate the rotating drill bit, and to help recycle and remove rock debris resulting from drilling activities. These heavy-duty, high-pressure pumps require regular refurbishment, inspection, and repair in the field.

DAC Worldwide’s dissectible mud pump assembly is a realistic sample that’s similar in geometry, design, and operating characteristics to the larger varieties learners will encounter on the job. DAC Worldwide chooses popular name-brand pumps for its dissectibles to ensure industrial and oil and gas training relevancy.

Using the dissectible mud pump, learners will gain hands-on experience with the operating principles, regular maintenance activities, and nomenclature/parts identification at a more convenient scale in the classroom or lab.

Technical training is most effective when learners can gain hands-on practice with industry-standard components they’ll encounter on the job. The Representative Triplex, Plunger Mud Pump Dissectible features a wide variety of common, industrial-quality components to provide learners with a realistic training experience that will build skills that translate easily to the workplace.

The Representative Triplex, Plunger Mud Pump Dissectible is a sturdy unit with a complete triplex, reciprocating, 20+ bhp plunger pump with .75" plunger, 1.5" stroke, and 3" cylinder sleeve. The unit allows for complete disassembly, assembly, and inspection, including removal of plungers, packing, and valves.

The dissectible mud pump comes with a formed-steel, powder-coated baseplate. It can also be mounted on a compatible DAC Worldwide Extended Electromechanical Workstation (903). Each unit comes with the manufacturer’s installation and maintenance manual.

Exclusive distributor for TSC Workforce series pumps. From 450HP to 2200HP, these lightweight, high performance pumps are designed for todays drilling operations. Higher pressures, higher loads, these pumps deliver.

Full line offering of AC motors & VFD drives. Distributing and supporting WEG products ranging from 1/2HP to 2500HP, and variable frequency drives for control. From fan drives to pump drives, we provide both solutions and support for your needs.

Proudly carrying proven quality TSC fluid end consumables for all common model pumps, we also supply factory OEM power end and repair parts for many current brands/models including GD, HH, Bomco and others.

Specifically designed to meet the needs of land rigs, the E-1600 triplex mud pump is easy to operate and easy to haul. Our design delivers the rock-solid performance you expect from a 1,600-HP pump.

The E-1600 uses both valve over valve KSI and 2 pc. L-shaped 7.5 KSI fluid ends to provide the particular pressure range and flow rates required for general service applications. The E-1600 is a standout pump for the industry for locations which must depend on longevity of the pumps.

Additionally, you can expect a long service life because the bearings are designed in conjunction with API Spec 7K with an L10 life of 20,000 hours with proper lubrication and maintenance.

Our precise equipment design and production processes reduce wear and tear, as well as, maintenance downtime and costs. Our precise machining makes shimming obsolete; the pump is ready to use after set-up and runs smoothly throughout the operation. Very low noise and vibrations levels increase the HSSE performance.

With a large variety of drives, motor and skid configurations, HMH provides a mud pump solution for any project and drilling requirement. We deliver high pressure triplex mud pumps with a maximum discharge pressure between 5 000 and 10 000 psi and power ratings between 1 000 and 2 200 hp.

Our mud pumps reduce service costs and increase operational efficiency. Our unique gear driven drive has an extended lifetime of up to 50 000 hours and is more durable than traditional chain or belt driven drives. Our hydraulic quick release system allows fast and safe replacement of fluid end parts.

The 1600 hp mud pumps are designed to circulate drilling fluid under high pressure (up to 7 500 psi) down the drill string to support any project requirements.

The 2200 hp mud pumps are designed for circulating drilling fluid under high pressure (up to 10 000 psi) down the drill string to support especially deep drilling operations.

The X-series mud pump type PD X-3.004 SG HDD manufactured by PRIME DRILLING impresses with its robust and low-wear design. The 7-fold bearing mounted drive shaft, which is equipped with 3 eccentric wheels, replaces the conventional crankshaft. Due to the revolution of these shafts and their maximum 230 rotations per minute operational wear of rubbers and liners are reduced to a minimum.

The pump is driven by a 470 kW CAT engine. This type of mud pump is exclusively manufactured in our Wenden plant, i.e. „made in Germany“. Its electronic gearshift in combination with eccentric wheels used instead of a crankshaft make it a high- power but low- maintenance product. All valves and plungers also comply with API standards.