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Series of plunger pump

The Series of Plunger Pump is a full-series high-pressure reciprocating pumping equipment developed in strict accordance with API 674/675 industry standards, specially designed for oilfield high-pressure fluid delivery, water injection, acidification, fracturing and chemical dosing operations. This product series covers triplex and quintuplex structural configurations with complete power and pressure grade specifications, adapting from conventional well water injection to ultra-high pressure deep well stimulation. Adopting horizontal single-acting reciprocating working principle, the whole unit integrates high-strength power end assembly, wear-resistant fluid end module, precision crankshaft transmission system, intelligent pressure regulating unit and full-sealed lubrication protection structure. It realizes stable and continuous conveying of high-pressure water, saline water, polymer solution, acid-base medium and sand-containing mixed fluid, serving as the core power equipment for oilfield reservoir pressure maintenance, well stimulation and pipeline pressure testing. All key components adopt heavy-duty industrial customized design, with excellent abrasion resistance, corrosion resistance and pressure resistance. Fully adapted to extreme harsh environments including desert high temperature, Gobi wind-sand, muddy well sites and high-altitude cold plateaus, the full-series plunger pumps provide reliable high-pressure fluid delivery solutions for onshore oil and gas exploitation, well completion, workover and enhanced oil recovery projects.

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Core advantages

Designed around the operating requirement.

Full-Series Model Coverage & Wide Working Adaptability

The product series includes multiple types such as conventional water injection plunger pumps, fracturing plunger pumps and chemical dosing plunger pumps, covering diversified pressure and flow ranges. Triplex pumps feature compact structure and stable operation for daily water injection and conventional fluid delivery; quintuplex pumps adopt 72° phase shift design to minimize flow pulsation, suitable for high-precision and high-pressure continuous operation. Full model grades meet the needs of conventional well, deep well and ultra-deep well oilfield construction.

High Pressure Resistance & Superior Wear Resistance

Key wearing parts such as plungers, valve seats and packing adopt hard chrome plating, tungsten carbide or ceramic strengthening treatment. The fluid end can be customized with 316L stainless steel, duplex steel and Hastelloy materials, effectively resisting high salinity, hydrogen sulfide corrosion and sand-containing fluid abrasion. The reinforced monoblock structure improves overall rigidity, ensuring long-term stable operation under ultra-high pressure working conditions without deformation or leakage.

Stable Fluid Delivery & Low Pulsation Performance

Optimized crankshaft transmission and multi-plunger phase matching design greatly reduces fluid pressure pulsation and pipeline vibration. Equipped with professional pressure stabilizing and damping components, the pump realizes uniform and continuous fluid output, avoiding impact damage to pipelines and downstream equipment. It guarantees precise and controllable flow and pressure for oilfield water injection and chemical dosing operations.

Full-Climate Harsh Environment Adaptability

The whole machine adopts wide-temperature anti-aging and sealed dust-proof design. Core transmission and hydraulic components support stable operation at -40℃ ~ +55℃. The anti-corrosion, sand-proof and weather-resistant structural coating adapts to desert wind-sand erosion, high-altitude low-pressure and humid muddy well-site environments, realizing 24/7 uninterrupted full-climate operation.

Multi-Level Safety Protection & High Operational Reliability

Equipped with over-pressure protection, overload shutdown, low lubrication pressure alarm and fluid leakage monitoring functions. The built-in pressure relief valve and fail-safe protection mechanism effectively avoid equipment damage and pipeline bursting risks caused by instantaneous pressure surge. Fully compliant with oilfield hazardous zone safety standards, it ensures safe and stable high-intensity continuous operation.

Modular Design & Low Maintenance Cost

Adopts standardized modular assembly layout with highly universal accessories. The independent lubrication system ensures uniform oil supply for moving parts and reduces wear loss. The split structural design simplifies daily inspection, fault troubleshooting and quick replacement of wearing parts, effectively lowering long-term operation and maintenance costs for oilfield teams.

Product Overview
Product	Series of plunger pump
Product line	Assembly Parts

Technical Specifications
item	3ZB-145 pump	3ZB-185 pump		3ZB-300 pump
outset reducing case radio	4.60	4.60	4.60（2.03）
kW Max. input power	145	185	300
rpm Max. SPM	280	280	360
mm Plunger stroke	135	152.4	160
mm Plunger dia.	100	100，115	90，100，115
L Displacement per stroke	3.18	3.58,4.75	3.0，3.57，4.97

Application

Where this equipment is used.

High-pressure water injection operation for oil and gas reservoirs to maintain formation pressure and improve oil recovery rate
Fluid delivery and pressurization for oilfield fracturing, acidification and well stimulation construction projects
Precision chemical dosing and medium conveying for enhanced oil recovery and wellbore anti-corrosion treatment
Pressure testing and leakage detection for oilfield pipelines, wellhead equipment and pressure vessels
Conveying of high-salinity produced water, acid-base medium and sand-containing mixed fluid in complex well conditions
Long-term continuous fluid supply operation for desert, Gobi and high-altitude cold oilfield extreme working environments

Next step

Send the operating requirement.

For a useful technical response, include the target well conditions, operating depth or pressure, expected quantity, destination and any required configuration.

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Configuration

Options for a matched equipment scope.

Available configurations can be matched to the equipment model, operating conditions and project requirements.

Customize pump structure type, power grade, working pressure and flow parameters to match different well depth and process requirements
Upgrade high-performance corrosion-resistant and wear-resistant materials for sour gas and high-salinity harsh medium working conditions
Equip full intrinsically-safe explosion-proof electrical system to meet Class 0 hazardous oilfield zone safety standards
Install low-temperature quick-start and hydraulic system heat preservation assembly for severe cold plateau regional operation
Add variable frequency speed regulation, remote monitoring and intelligent pressure stabilization control system for automatic operation
Configure pulsation dampers and buffer devices to further reduce pipeline vibration and ensure stable fluid delivery
Customize enhanced sand-proof, anti-corrosion and aging-resistant coating for long-term harsh well-site service

Buyer questions

Frequently asked about this equipment.

The following questions address common equipment selection and operating considerations.

What is the core application of Plunger Pump in oilfield operations?

The series plunger pump is professional high-pressure fluid conveying equipment for oilfields. It is mainly used for reservoir water injection, well fracturing, acidification stimulation, chemical dosing and pipeline pressure testing. With high pressure resistance and stable delivery performance, it is the key supporting equipment for oilfield reservoir pressure maintenance and enhanced oil recovery.

What is the difference between triplex and quintuplex plunger pumps?

Triplex plunger pumps feature compact structure and cost-effective performance, suitable for conventional water injection and general fluid delivery. Quintuplex plunger pumps adopt five-plunger phase shift design with lower flow pulsation and more stable pressure output, ideal for high-precision chemical dosing and ultra-high pressure continuous operation scenarios.

Can the pump adapt to corrosive and sand-containing complex media?

Yes. We support customized fluid end materials including stainless steel, duplex steel and Hastelloy. Key wearing parts adopt carbide and ceramic wear-resistant treatment, which can effectively resist corrosion of acid-base, high-salinity media and abrasion of sand-containing fluid, adapting to complex oilfield working conditions.

How to ensure stable and safe operation under high pressure?

The whole machine is equipped with perfect safety protection mechanisms such as over-pressure automatic shutdown, overload protection and low lubrication alarm. The optimized damping structure reduces pipeline vibration and pressure impact. Multi-layer sealing and pressure-resistant design avoids medium leakage, ensuring long-term safe and stable high-pressure operation.

Can working parameters and functional configurations be customized?

Yes. We support personalized customization of pump structure, power grade, pressure flow parameters, wetted materials, explosion-proof grade and intelligent control functions, matching different oilfield process standards and harsh working conditions.

Supplier context

Why this product is considered.

We provide professional API-standard Series of Plunger Pump with independent R&D and standardized manufacturing capabilities, fully compliant with international petroleum industry specifications. Our products adopt heavy-duty reciprocating plunger structure, featuring high pressure resistance, excellent wear and corrosion resistance, low pulsation and stable fluid delivery performance. The full-series model coverage meets diversified oilfield high-pressure process demands, while modular design greatly reduces operation and maintenance costs. We deliver one-stop full-process solutions including personalized scheme customization, standardized production, global logistics and on-site commissioning guidance, providing reliable high-pressure fluid conveying equipment support for oilfield exploitation, well stimulation and daily maintenance projects.

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