MASSARENTI MAS 1000 Mud Pump

Table 1: Massarenti MAS 1000 key technical specifications

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Performance data

Table 2: MAS 1000 discharge performance data

Sources of data:

Note: Performance data are based on a volumetric efficiency of 100% and a mechanical efficiency of 90% . Operation at maximum stroke is recommended for intermittent operation.

Frames and drivetrains: rigid and smooth power transmission

Frame structure: the MAS 1000 dynamic end is built on a high-strength, welded steel frame structure. This design choice provides superior rigidity and structural integrity, which is essential to maintain precise alignment of the drivetrain under extreme load conditions. The frame is welded and stress-relieved to eliminate internal stresses, prevent deformation, and ensure long-term dimensional stability.

Herringbone gear system: power is transmitted through a continuous set of herringbone gears. This advanced gear design is the cornerstone of the MAS 1000's smooth, low-noise operation. This design inherently eliminates the axial thrust, which is the main cause of bearing and housing wear in helical gear systems. The elimination of axial load allows the use of bearings optimized for radial load, which significantly improves the reliability and life of the entire power end assembly.

Material and manufacture: the main gear and pinion are forged from high strength alloy steel and are integrally hardened and ground to strict AGMA standards for maximum durability and wear resistance.

Driveline integrity: forged for strength and endurance

Crankshaft assembly: the crankshaft is an integral eccentric shaft forged of high-quality high-strength alloy steel (35CrMo or 42CrMo) . The forging process aligns the grain structure of the steel with the contours of the component, resulting in a component that is stronger than the casting and more resistant to fatigue and impact loads.

Connecting rod and crosshead: the connecting rod is also forged from high-strength alloy steel. The crosshead is made of high grade ductile iron, selected for its superior damping properties and excellent wear resistance when paired with replaceable bronze guides.

Bearing and lubrication system

Bearing Configuration: MAS 1000 features a robust friction-resistant roller bearing configuration designed for long life operation under continuous high loads. This includes heavy duty double row tapered roller bearings for crankshaft main bearings and double row spherical roller bearings for pinion shafts.

Lubrication system: dual lubrication system ensures continuous protection of all critical components. This system combines forced and splash lubrication. An integrated gear pump delivers filtered and cooled oil directly to the main bearings, pinion bearings and crosshead, while the gear set and connecting rod are protected by splash lubrication. This comprehensive approach ensures optimum lubrication and heat dissipation, which is essential for extending the life of power end components.

Forged monolithic fluid modules: the heart of high-pressure integrity

Materials and forging process: the three interchangeable fluid end modules are forged from a single (single) piece of high quality, vacuum degassing alloy steel (AISI 4135(35CrMo)) . This material was chosen for its superior strength, toughness and fatigue resistance.

Heat treatment and hardening: after forging, each module undergoes a multi-stage heat treatment, including quenching and tempering, followed by internal hardening. This process achieves precise hardness (HB285-330) and results in a microstructure that is highly resistant to fatigue cracking and stress corrosion cracking. For enhanced corrosion resistance in particularly harsh environments, electroless nickel plating is optional on all wetted surfaces.

Quality assurance and non-destructive testing (NDT) : each module is subjected to rigorous non-destructive testing (NDT) according to API 6A and 7K standards. This includes ultrasonic testing (UT) to ensure that forgings are free of internal defects such as cracks or inclusions, and magnetic particle testing (MPI) to verify surface integrity.

High Efficiency Valve Assembly: API # 6 full bore design

Material and fabrication: body and seat are precision machined from single piece forgings of high grade alloy steel (20CrMnTi or AISI 8620) . This one-piece design provides maximum strength and eliminates the failure points associated with multi-piece construction.

Surface hardening: after machining, these parts are subjected to a deep carburizing and quenching heat treatment. This forms an extremely hard, wear-resistant layer (HRC 59-65) on the surface, while maintaining a tough, ductile core.

Valve plug-in technology: field replaceable high-performance bonded polyurethane plug-ins. This state-of-the-art polymer is specifically designed to provide excellent wear resistance, extrusion resistance, and chemical corrosion resistance to both water-and oil-based drilling fluids, ensure reliable sealing and extended service life at temperatures up to 180 ° F (82 ° C) .

Cylinder liners and piston systems: the choice between durability and ultimate durability

High chromium bimetal cylinder liner (standard)

Construction: forged steel housing -AisiAISI 1045/45 # steel) providing high tensile strength (> 900,000 psi) to resist circumferential stress combined with centrifugally cast high chromium (26-CR% Cr) cast iron inner sleeve.

Performance: the inner sleeve after heat treatment, hardness reaches HRC 62-69, has excellent wear resistance and corrosion resistance. The inner bore is honed to mirror finish to minimize friction and extend piston life. Over 800 hours of reliable service life is provided under typical drilling conditions.

Zirconia ceramic cylinder liner (advanced upgrade option)

Construction: toughened zirconia (Zro3) ceramic liner is interference fit with forged steel housing.

Properties: Zirconia has unparalleled hardness (HRC 90 +) , excellent wear and corrosion resistance, and a much lower coefficient of friction than high ferrochrome. This significantly extends the life of both the cylinder liner (4,000 + hours) and the piston, thereby significantly reducing maintenance downtime and associated labor costs.

Piston and Rod Assembly

Piston: using forged alloy steel (40CR/45 # steel) piston hub, and high temperature, high hardness of polyurethane chemical bonding. The adhesive structure is rated at up to 7500 PSI and exhibits excellent extrusion and wear resistance in all types of drilling fluids.

Piston rod: forged from high strength 42CrMo alloy steel, heat treated for optimum toughness and surface treated with hard chromium plating. This surface treatment provides a low friction, high wear-resistant surface, extending the life of the piston rod and crosshead intermediate rod packing.

API 7K compliance: Massarenti MAS 1000 is designed, manufactured and tested in strict compliance with API 7K drilling and workover equipment specifications. This is not only a certification, but also a globally recognized assurance of safety, reliability and quality.

Universal interchangeability: a core principle of the API 7K standard is the interchangeability of perishable parts. All fluid-end perishables on the MAS 1000 -- including cylinder liners, pistons, valves, seats, and gaskets -- are 100% interchangeable with any other API 7K compliant parts of the same class pump (e.g. , F-1000,9T1000) .

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