China OPI Mud Pumps Manufacturers Suppliers Factory - Buy Discount OPI Mud Pumps

Your Professional OPI Mud Pumps Supplier

We are a certified manufacturer of mud pumps, plunger pumps, and fracturing pumps, supplying complete pump systems, accessories, and centrifuges for oil drilling, mining, and industrial use. With API 7K and ISO 9001 certification, advanced CNC machining, and full in-house testing, we deliver reliable equipment for high solids, high pressure, and harsh environments. Our products are widely applied in oil & gas drilling, mining slurry transport, environmental engineering, and high-pressure fracturing operations.

Quality Control
Multi-axis CNC machining and complete testing systems ensure consistent quality, verified performance, and full traceability for every critical component.

Global Market Experience
Strong performance in North America, Russia, and the Middle East supports reliable supply and service.

High-Quality Service
From pre-sales engineering analysis to installation, training, and after-sales maintenance, we help customers reduce risk, improve uptime, and extend equipment service life.

OPI 350DG Mud Pump
Table: Performance Data (Based on 90% Mechanical Efficiency and 100% Volumetric Efficiency)
OPI 500DC Mud Pump
Table 1.1: Key Technical Specifications of OPI 500DC (Based on F-500 Reference Data)
OPI 700HDL Mud Pump
The OPI 700HDL's power end frame is engineered for robustness, designed to withstand extreme operational stresses and vibrations. Unlike pumps using cast iron or ductile iron frames, many high-power
OPI 1000HDL Mud Pump
OPI 1000HDL features an advanced L-shaped, two-piece, interchangeable modular hydraulic end design. This design offers significant operational advantages over traditional integrated (or
OPI 350D Mud Pump
Meta Title: OPI 350D Mud Pump | Forged Steel Triple-Cylinder Pump | API 7K Wear Parts

Parameter

Power rating	350 HP (approx. 261 kW)
Stroke length	8 inches (203.2 mm)
Maximum speed	175 SPM (based on F-350 comparable model)
Hydraulic end type	L-shaped modular hydraulic end
Hydraulic end material	Forged alloy steels (e.g., 35CrMo, 40CrMnMo)
Valve type	Series 4
Cylinder liner size range	4 to 6 inches
Maximum working pressure	Up to 3,525 PSI (depending on sleeve size)

Types of OPI Mud Pumps

The OPI mud pumps produced by our company mainly include the following types:

OPI 350DG Mud Pump

The V-gear transmission ensures smooth operation and efficient torque transmission. A system combining forced lubrication and splash lubrication provides continuous and reliable lubrication protection for all bearings and moving parts.

OPI 700HDL Mud Pump

The OPI 700HDL's power end frame is engineered for robustness, designed to withstand extreme operational stresses and vibrations. Unlike pumps using cast iron or ductile iron frames, many high-power mud pumps (including the F series compatible with OPI) feature welded steel plate structures.

OPI 350D Mud Pump

The OPI 350D features a **double helical gear (herringbone gear) design**. Unlike straight gears, this herringbone structure ensures multiple teeth engage simultaneously, delivering smooth, continuous, and progressive power transmission while significantly reducing operational noise and vibration.

Advantages of OPI Mud Pumps

High Efficiency

Mud pumps are designed to deliver a consistent flow of drilling fluid, ensuring optimal performance throughout the drilling process. The positive displacement mechanism allows them to maintain flow even under high pressure.

Durability

Constructed from robust materials, these pumps are engineered to withstand the harsh environments often encountered in drilling operations. They are resilient against wear and tear, which ensures a longer operational lifespan.

Versatility

These pumps are adaptable to different drilling setups and fluid types, from traditional drilling mud to more specialized fluids used in modern drilling operations. This versatility is crucial for meeting the diverse needs of various drilling projects.

Applications of OPI Mud Pumps

Oil and Gas:

Used extensively in both onshore and offshore operations, including deepwater drilling and shale gas extraction

Horizontal Directional Drilling (HDD):

Essential for trenchless construction projects (e.g., installing pipes under roads or rivers), where they circulate drilling fluid to stabilize the bore and remove debris.

Mining and Construction:

Transferring high-viscosity materials, dewatering excavation sites, and handling various slurries and grouts.

Geothermal Operations:

Circulating fluids to extract heat from rock formations.

Pipeline Operations:

Used for cleaning and maintaining pipelines.

Operating Procedures for OPI Mud Pumps

Safety first
Ensure that the pump is installed on a stable surface or foundation.

Connect the hoses
Connect the input hose to the mud pit or tank, and connect the output hose to the drill string or displacement fluid system.

Priming the pump
This involves filling the pump with the mud or fluid to be pumped. Priming is crucial as it eliminates air bubbles, which can cause damage to the pump. To prime, open the valve and turn on the pump, allowing the mud or fluid to flow into the pump.

Adjusting the speed

Adjust the pump speed to the required level. Different mud pumps have different speed control mechanisms.

Pumping

Once the pump is primed and the speed control is set, begin pumping the mud or fluid using the designated control panel. Ensure that the flow rate matches the drill string or displacement fluid system's required rate.

Monitoring

Continuously monitor the pressure and flow rate. Regular monitoring helps detect any potential issues and allows for timely corrective measures to be taken.

Shutting down

Once done with pumping, stop the pump and disconnect the hoses. Clean the mud pump thoroughly, and store it in a safe place.

Materials and Manufacturing Processes of Wear-Resistant Components for OPI Mud Pumps

Component	Material Options	Key manufacturing processes
Hydraulic end module	4135/35CrMo/40CrMnMo alloy steel	Forging, heat treatment (quenching and tempering), non-destructive testing
Crank axle	4340/35CrMo Forging alloy steel	Overall forging, multi-stage heat treatment, nitriding, dynamic balancing
Gear wheel	4340 Forging alloy steel	Double helical (Herringbone) machining and heat treatment
Valve body/seat	20CrNiMo (AISI 8620) alloy steel	Forging, carburizing and quenching
Cylinder sleeve	High chromium bimetallic / zirconia ceramic	Centrifugal casting / isostatic pressing
Plunger	Forged steel piston hub + polyurethane/nitrile rubber	Bonding process
Piston rod	40Cr forged alloy steel	Forged, surface chrome/galvanized

Packaging and Shipping

Packaging	Standard export plywood case or carton.
Shipping	DHL, TNT, UPS, FEDEX, and EMS, SF. Air and sea transportation are also supported.

Our Factory

Shijiazhuang Dong Li Petroleum Machinery Co., Ltd. (DLSY) was founded in 2008 and is headquartered in Shijiazhuang, Hebei Province, China.

p2025092315351678c99.jpg (800×613)

Our Certificates

FAQ

Q: Can OPI mud pumps work in harsh environments?

A: Yes, OPI mud pumps are built to work in harsh environments such as deserts, offshore sites, and cold regions. Their strong structure and stable power transmission help them operate continuously. With proper lubrication and maintenance, OPI mud pumps can maintain performance even under extreme temperatures and heavy workloads.

Q: Are OPI mud pumps easy to maintain?

A: OPI mud pumps are designed for easy maintenance. Many wear parts, such as valves, pistons, and liners, are easy to replace. Clear structure and standard components make servicing simple. Regular inspection of OPI mud pumps helps extend service life and reduce unexpected equipment failure during drilling work.

Q: Are OPI mud pumps suitable for high-pressure drilling?

A: Yes, OPI mud pumps are suitable for high-pressure drilling work. They are built with strong frames and reinforced fluid ends. OPI mud pumps can deliver stable pressure to meet deep well drilling needs. Proper maintenance helps keep pressure output steady and ensures safe operation in demanding drilling environments.

Q: Can OPI mud pumps support continuous operation?

A: Yes, OPI mud pumps are designed for continuous operation. Their cooling system, lubrication system, and strong bearings support long working hours. With proper monitoring and routine maintenance, OPI mud pumps can operate non-stop, which is essential for large-scale drilling projects.

Q: What maintenance is required for OPI mud pumps?

A: OPI mud pumps require regular lubrication, seal inspection, and wear part replacement. Checking valves, pistons, and liners helps prevent leaks and pressure loss. Simple daily checks keep OPI mud pumps running smoothly and reduce the risk of sudden breakdowns during drilling work.

Q: Are OPI mud pumps energy efficient?

A: OPI mud pumps are designed to deliver strong output with balanced energy use. Efficient power transmission reduces energy loss. When operated at proper speed and pressure, OPI mud pumps help lower fuel or electricity consumption while still meeting drilling performance needs.

Shijiazhuang Dongli Petroleum Machinery Co., Ltd. is one of the most professional opi mud pumps manufacturers and suppliers in China, featured by quality products and low price. Please rest assured to buy CE approved opi mud pumps made in China here from our factory. Contact us for quotation.