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Progressive Cavity Pump Selection Guide

Managing high-viscosity and high-solids fluids poses a severe technical challenge in drilling mud and environmental engineering. Traditional centrifugal pumps generate high shear forces, which cause fluid turbulence and accelerate component wear. As a premier representative of positive displacement rotary pumps, the progressive cavity pump utilizes an axial, uniform-push mechanism to deliver an ideal solution for industrial fluid driving.

progressive-cavity-pumpOperating Logic of the Progressive Cavity Pump

The progressive cavity pump relies on the interference fit between a stainless steel rotor and an elastic stator. As the rotor rotates within the stator, it creates sequential cavities that move fluid smoothly along the axis. This physical geometry provides exceptional processing advantages:

  • Shear-Free Stable Transport:The fluid maintains low internal velocity and constant volume. This design stabilizes discharge pressure and eliminates turbulence completely.
  • Tight Sealing and Separation:The continuous sealing line isolates the inlet from the outlet. This mechanism acts as an integrated valve to prevent backflow during shutdowns.
  • Multiphase Handling and Wear Resistance:The flexible stator handles abrasive solids and suspended hard particles easily. Consequently, the progressive cavity pump allows for reliable multiphase transport of liquids, gases, and solids.

Technical Variations of the Progressive Cavity Pump

Industrial fluid systems utilize three main configurations of the progressive cavity pump based on specific loads and control standards: the SWP heavy-duty series, the standard Mono series, and the variable frequency drive (VFD) Mono series.screw-pump

Core Commonalities

All three configurations utilize the single-screw positive displacement principle. They feature standardized 125 mm (5 in) inlets and outlets, which simplifies manifold integration significantly. Furthermore, engineers use high-strength stainless steel for the rotors and design the pump housings to facilitate rapid stator and rotor replacement.

Model Specifics and Technical Differences

  • SWP-70: Lightweight Industrial Performance
    This model utilizes a 7.5 kW motor, weighs 300 kg, and measures 2175×370×580 mm. It delivers a working pressure of 0.3 MPa and a head of 30 m. Technicians can adjust the flow rate from 2 to 30 m³/h by varying the rotation speed between 80 and 400 rpm. This compact unit provides a cost-effective solution for tight jobsites with low-to-medium displacement requirements.
  • G70 Standard Mono: High-Pressure Heavyweight
    This heavy-duty progressive cavity pumpupgrades to an 11 kW motor, weighs 535 kg, and measures 2930×530×720 mm. It generates a high working pressure of 0.6 MPa and a head of 60 m, enabling long-distance, high-pressure transport. The mechanical gearbox adjusts the displacement from 10 to 40 m³/h within a speed range of 200 to 1000 rpm, making it perfect for stable continuous transfer processes.
  • G70-1 VFD Mono: Intelligent Feeding Automation
    This unit shares identical dimensions (2930×530×720 mm) and weight (535 kg) with the standard G70 model, utilizing the same 11 kW power rating. However, it optimizes operations for a rated speed range of 120–253 rpm, delivering a stable 40 m³/h flow at 0.2 MPa pressure and a 20 m head. This specific progressive cavity pumpacts as the ideal feeding pump for decanter centrifuges. The VFD control panel communicates directly with the centrifuge PLC, automatically slashing pump displacement within milliseconds if the centrifuge torque spikes, preventing plugging and system shutdowns.

Selection Matrix for the Progressive Cavity Pump

In summary, choosing the right configuration depends entirely on your site requirements:

  • Select the SWP-70 model if your jobsite faces lifting weight limits and space restrictions.
  • Choose the G70 standard Mono configuration if your project demands long-distance pumping or high-pressure discharge.
  • Deploy the G70-1 VFD Mono unit if you require an automated feeding pump that synchronizes intelligently with your decanter centrifuge system.
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Advanced Venturi Jet Mud Mixer for Mining & HDD

Diesel Engine Driven Jet Mud Mixing Skid provides the ultimate solution for fluid preparation. Many contractors face clumping issues with bentonite and additives. Consequently, we developed the Diesel Jet Mud Mixing System. It combines high-shear technology with rugged mobility for the toughest jobsites.
The Power of Venturi Jet Mixing
The core of our Diesel Engine Driven Jet Mud Mixing Skid is the mixing efficiency. We solve the problem of sedimentation and clumping through dual-action technology.
  • Powerful Jetting: First, the high-pressure Centrifugal Pump drives the fluid.
  • Venturi Effect: Then, the Venturi Mixing Hopper creates a vacuum to suck in powders.
  • Rapid Hydration: Consequently, additives mix instantly with the fluid. This ensures a smooth and homogeneous mud mixture every time.

Durability and Easy Maintenance
Maintenance downtime costs money. Therefore, we designed our Diesel Powered Mud Mixer for maximum uptime.
  • Corrosion Resistance: We use wear-resistant materials for all core components. Thus, the skid thrives in deserts and coastal areas.
  • Skid-Mounted Stability: Furthermore, the heavy-duty Skid ensures stability during high-volume operations.
  • Quick-Wear Parts: Most importantly, we use a fast-replacement design for wear parts. This significantly shortens maintenance windows.

Flexible Applications Across Industries
KOSUN’s Diesel Engine Driven Jet Mud Mixing Skid is highly versatile.
  • Trenchless HDD: It ensures high-capacity Bentonite Mixing for tunnel face stability.
  • Oil & Gas: It provides reliable mud adjustment for deep-well drilling rigs.
  • Civil Construction: Additionally, it is perfect for Subway Shield Tunneling (TBM) slurry management.
 KOSUN delivers technology you can trust. Our Diesel Jet Mud Mixer helps you achieve lower costs and higher efficiency. No matter the location, we ensure your project moves forward without interruption.
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CP Series Centrifugal Pump: Industrial High-Efficiency Mud Transfer Solution

In the fields of solids control systems and heavy industrial fluid transport, the CP series centrifugal pump has become essential equipment for handling high-concentration suspensions, thanks to its superior wear resistance and high-efficiency transfer capabilities. Whether dealing with abrasive drilling mud or complex municipal environmental projects, the CP Series Centrifugal Pump provides stable and reliable power support.

High-Hardness Wear-Resistant Alloy Ensures Equipment Longevity
The core advantage of the CP series centrifugal pump lies in its rigorous material selection process. All wet-end components are manufactured from high-hardness, wear-resistant alloy cast iron, which effectively resists erosion and wear from fluids with high sand content. Additionally, the pump features high-hardness carbide mechanical seals. This design significantly extends seal life and reduces downtime caused by leakage, ensuring stable performance during long periods of heavy-duty operation.

Precision Closed Impeller Design Enhances Transfer Efficiency
Efficiency is a key metric for measuring industrial pump performance. The CP series sand pump utilizes a precision closed impeller structure, which provides higher hydraulic efficiency and stronger head stability compared to open-type designs. This design optimizes the fluid dynamics within the flow channel, ensuring smoother mud transfer and significantly reducing energy consumption. Furthermore, advanced precision machining guarantees full interchangeability of all spare parts, facilitating rapid onsite repairs and maintenance for customers.

Full-Scenario Coverage for Diverse Industrial Transport Needs
With its exceptional impact and wear resistance, the CP series centrifugal pump’s application extends far beyond traditional drilling solids control. In oil drilling and environmental engineering, it is primarily used to transport high-specific-gravity mud. In municipal engineering, thermal power generation, and gas coking industries, it handles the transfer of suspensions containing slag or ash. Additionally, this series is an ideal choice for conveying media with solid particles in mining, steelmaking, papermaking, cement, and food printing and dyeing industries.

Technical Innovation for Worry-Free Maintenance and High Economic Benefits
The CP Series Centrifugal Pump introduced by KOSUN addresses industry pain points such as rapid wear and low efficiency through technical innovation. Its compact and user-friendly design ensures long-term operation under harsh conditions, saving customers significant costs in spare parts and maintenance time. If you are seeking fluid transport equipment that balances economy, durability, and high performance, the CP Series Centrifugal Pump is the optimal solution for achieving green production and cost reduction.

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Oil Sludge Thermal Washing and Disposal System: Green Environmental Protection Solution for the Petroleum Industry

Oil Sludge Thermal Washing and Disposal System is the core technical equipment for solving solid waste pollution and achieving resource utilization in the petroleum industry today. With the strengthened supervision of HW08 waste mineral oil in the National Catalogue of Hazardous Wastes, adopting an efficient Oil Sludge Thermal Washing and Disposal System for harmless disposal has become the key to achieving compliance for enterprises.

Following Policies to Support Oil Sludge Thermal Washing and Disposal System

KOSUN responds to national environmental requirements by combining vibration separation with fluid mechanics to create a high-performance Oil Sludge Thermal Washing and Disposal System. The system focuses on solid-liquid phase separation, effectively solving waste treatment challenges while recovering usable resources and ensuring emissions fully meet local government environmental standards.

Modular Design of Oil Sludge Thermal Washing and Disposal System

The Oil Sludge Thermal Washing and Disposal System developed by KOSUN consists of several core modules to ensure a rigorous and efficient workflow:

  • Pre-treatment Module: Performs initial screening and property conditioning of the feed sludge.
  • Oil-sand Separation Module: Utilizes thermo-chemical washing technology for high-efficiency de-oiling.
  • Screening Module: Conducts precise classification and separation of solid particles.
  • Oil-water Separation Module: Performs deep phase separation to recover crude oil and purify water.

30t/h High Capacity and Low-cost Operational Advantages

The Oil Sludge Thermal Washing and Disposal System demonstrates outstanding technical parameters and economic value in practical applications:

  • High Processing Capacity: The system reaches a throughput of 30t/h, meeting the needs of large-scale continuous operations.
  • Standard-compliant Oil Content: The oil content in the treated solids can be reduced to below 3%, achieving harmless disposal.
  • Water Conservation: Process water within the system is recycled, significantly reducing total water consumption.
  • Cost Savings: Reduces hazardous waste transportation and disposal fees, while enhancing resource benefits through crude oil recovery.

Extensive Applications of Oil Sludge Thermal Washing and Disposal System

This system possesses excellent adaptability and can handle a wide variety of complex oily wastes:

  • Treating tank bottom sludge and spilled sludge at oilfield joint stations.
  • Solving de-oiling challenges for oil-based drill cuttings generated during drilling.
  • Applied to sludge treatment for ocean-going vessel bilges and chemical plants.
  • Targeting resource-based disposal for coal tar extraction and industrial waste oils.

Through technical innovation, the KOSUN Oil Sludge Thermal Washing and Disposal System ensures safe operations for personnel while achieving highly efficient utilization of workspace. If you are looking for a low-cost, high-efficiency method for sludge treatment, this system is your best choice for achieving green production.

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Introduction to 1m³/h Oily Sludge Treatment System and Its Complete Process

In the oil extraction and storage industry, the disposal of oily sludge has long been a thorny environmental challenge. The 1m³/h oily sludge treatment system launched by KOSUN is a compact, high-efficiency solution specifically designed for the harmless and resource-oriented treatment of various types of oily sludge. Capable of handling floor oily sludge, drill cuttings, and tank cleaning residues, this system utilizes a sophisticated closed-loop process to transform “black waste” into valuable resources, making it an ideal choice for petroleum and petrochemical enterprises to achieve both environmental compliance and economic growth.

Core Technology: Chemical Hot Washing and Multi-stage Fine Separation

At the heart of the system is advanced chemical hot washing technology. By adding a specialized formula of surfactants and maintaining optimal temperatures, the stable “oil-water-solid” emulsion structure is thoroughly broken, allowing crude oil to be stripped from the surface of solid particles. Subsequently, the mixture enters high-speed decanter centrifuges or disc centrifuge units, where powerful centrifugal force achieves precise separation of the oil, water, and solid phases. This process ensures continuous operation and maximizes the recovery of crude oil from complex sludge mixtures.

Key Advantages: Resource Recovery and High Return on Investment

This system offers a significant cost advantage and an attractive investment recovery period for enterprises. Compared to traditional high-temperature incineration or pyrolysis, the 1m³ system provides better control over energy consumption and chemical costs. The recovered crude oil is of high purity and can be sold directly to refineries as raw material, effectively turning waste into treasure. Furthermore, the purified water, with oil content as low as 200mg/L, can be fully reused in the system’s own hot washing process. This closed-loop cycle significantly reduces fresh water consumption and wastewater discharge fees.

Treatment Results: Solid Phase Compliance and Harmless Disposal

Through its comprehensive process, the system demonstrates excellent capacity for waste reduction and resource recovery. After treatment, the oil content in the solid residue is stably reduced to below 2%, far exceeding national standards for general hazardous waste landfilling. This creates favorable conditions for subsequent deep disposal methods such as pyrolysis, incineration, or biodegradation. Whether dealing with floor sludge from oilfield operations or sediment from storage tanks, the system achieves high-efficiency purification, helping companies meet stringent environmental policies while reaching their green and sustainable production goals.

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Classification and Technical Comparison of Mud Cleaners

In oil drilling, geological exploration, and horizontal directional drilling (HDD) projects, the mud cleaner is the core solids control equipment for maintaining drilling fluid performance. Based on structural design and application scenarios, it is mainly classified into two types: the dome-style mud cleaner and the MD series high-efficiency mud cleaner.

Technical Characteristics of Dome-style Mud Cleaners

The dome-style mud cleaner features a fully enclosed chamber structure, specifically designed for working conditions with high environmental protection requirements. This equipment integrates high-frequency vibrating screens with hydrocyclone units to treat drilling fluids through multi-stage separation technology. The primary treatment removes coarse particles larger than 74μm via the vibrating screen, while the secondary treatment utilizes hydrocyclones to centrifugally separate fine solids between 5-74μm. Its enclosed structure effectively prevents mud splashing and ensures a clean job site, making it particularly suitable for offshore platforms, urban HDD projects, and the volume reduction treatment of waste mud.

Technical Characteristics of MD Series High-efficiency Mud Cleaners

As secondary and tertiary purification equipment in solids control systems, the MD series cleaner focuses on modular configuration and high-wear resistance design. The equipment is equipped with customized polyurethane or ceramic hydrocyclones and driven by Martin motors. Its advantages include a long service life for composite material shaker screens and rapid replacement facilitated by a wedge block design.. The equipment supports mechanical adjustment of the screen box angle during operation for convenient use. Its underflow vibrating screen can also serve as a parallel backup for the primary shale shaker, and it is widely applied in oil and gas drilling as well as coalbed methane development.

Selection and Comparative Analysis of the Two Types of Equipment

Both dome-style and MD series cleaners can achieve a separation precision of 5-74μm with a removal rate exceeding 90%, yet they differ in application focus. The dome-style cleaner emphasizes sealing and environmental friendliness, making it suitable for environmentally sensitive areas and compact drilling platforms. In contrast, the MD series cleaner highlights maintenance flexibility and wear resistance, catering to large-scale, high-load continuous drilling operations. Proper selection can effectively control mud density and viscosity, significantly reducing drilling costs and improving operational efficiency.

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How to Properly Select a Vertical Cuttings Dryer

Selecting a vertical cuttings dryer requires a comprehensive evaluation of processing capacity, mud type, environmental requirements, and site conditions. Xi’an KOSUN offers proven models such as the VC700 vertical cuttings dryer and VC900 vertical cuttings dryer, covering most drilling scenarios to help users achieve precise matching and stable compliance.

Selection Based on Processing Capacity

For small-to-medium drilling platforms and conventional onshore operations, the VC700 is the preferred choice. It features a capacity of 15–40 t/h and a 22kW motor, offering reasonable energy consumption and a compact footprint.For large-scale drilling, high-density mud, and high-flow conditions, the VC900 is recommended. With a capacity of 25–50 t/h, it provides higher separation efficiency and is ideal for continuous, high-intensity operations. Matching the model to the actual discharge volume prevents capacity waste while ensuring stable processing.

Selection Based on Mud Type and Environmental Standards

Oil-based (OBM) and synthetic-based muds (SBM) are high-value and subject to strict discharge regulations. Leveraging high centrifugal G-force, the VC700 can stably control the oil on cuttings (OOC) to below 5%, meeting international environmental discharge requirements. This allows for the efficient recovery of expensive mud and reduces material costs.Water-based muds (WBM) focus on waste reduction and low-cost operation. The VC700 is equally applicable here, reducing total waste volume and disposal fees for both onshore and offshore drilling environments.

Selection Based on Maintenance and Site Conditions

The VC700 features a top-access quick-change design, allowing wear parts and belts to be replaced without moving the main unit. The internal rotor scrapers are coated with tungsten carbide for wear and corrosion resistance, extending service life and lowering O&M (Operation and Maintenance) costs.For projects with limited space or frequent relocation, the VC700 vertical cuttings dryer is preferred due to its modular structure for easy installation and transport. For large-scale, long-term continuous operations, the VC900 vertical cuttings dryer can be selected to enhance overall returns.

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Why KOSUN Decanting Centrifuges are Preferred for Drilling Waste Remote Operations

Reliable Control Systems for Hazardous Zones

Safety and stability are non-negotiable in drilling environments. Every KOSUN decanter centrifuge is equipped with advanced explosion-proof electrical systems designed to meet rigorous industrial safety standards. Our decanting centrifuge control cabinets feature high-standard sealing and pressure-resistant designs, ensuring stable performance in Class I, Division 1 or Division 2 hazardous locations. Whether your project requires specific explosion-proof ratings or specialized cooling systems, KOSUN provides a decanting centrifuge that prioritizes operational safety.

Maintenance Redefined: Interchangeable Tungsten Carbide Tiles

The biggest pain point for a decanting centrifuge in remote locations is downtime due to wear. KOSUN has re-engineered the decanting centrifuge scroll with Interchangeable Tungsten Carbide Tiles on the discharge ports and scroll edges.

On-site Replacement: Worn tiles on the decanter centrifuge scroll can be replaced individually without removing the entire assembly or requiring specialized balance-shop welding.

Maximum Uptime: This modular wear protection drastically reduces the “Mean Time to Repair,” keeping your decanting centrifuge running longer in high-abrasive conditions.

Premium Components & Universal Adaptability

Reliability is built into every decanter centrifuge we manufacture. To ensure vibration-free operation at high RPMs, we utilize premium SKF or FAG bearings. Furthermore, KOSUN offers highly customizable VFD (Variable Frequency Drive) systems, allowing the decanting centrifuge to adapt to various global power grids (e.g., 460V/60Hz or 380V/50Hz). This versatility is essential for international rental fleets and service companies operating across different continents.

Conclusion

KOSUN combines “Rugged Engineering” with “Field Simplicity.” By choosing a KOSUN decanter centrifuge, you gain a partner that understands the harsh reality of oilfield life—where a decanting centrifuge must be as easy to maintain as it is reliable under pressure.

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Oily Sludge Treatment System: KOSUN 1m³/h High-Efficiency Solution

As the petrochemical industry advances, oily sludge treatment has become a critical intersection of environmental responsibility and sustainable growth. Traditional disposal methods like landfill or incineration are no longer viable due to escalating costs and strict regulations. KOSUN addresses this demand with its 1m³/h integrated oily sludge treatment system, a practical solution designed for high performance and cost optimization.

Chemical Hot Washing and Demulsification

The 1m³/h integrated oily sludge treatment system’s efficiency starts with chemical hot washing technology. Unlike conventional rinsing, this process uses specialized surfactants and cleaning agents under precise thermal regulation. This stage effectively breaks down emulsified structures and reduces the adhesion of crude oil to solid particles, ensuring a uniform feed for the subsequent centrifugal separation process.

Three-Phase Centrifugal Separation

Following the washing phase, the mixture enters a high-G force separation circuit utilizing decanter centrifuges and disc stack centrifuges. This achieves reliable three-phase separation results:

  1. Oil Phase Recovery: The system recovers high-purity crude oil that can be redirected to refineries as feedstock, generating direct economic value.
  2. Aqueous Phase Recirculation: Separated water is filtered and reintroduced into the closed-loop system, minimizing freshwater consumption and wastewater disposal needs.
  3. Solid Phase Compliance: Processed solids exhibit oil content below 3%, meeting regulatory standards for landfill acceptance or construction reuse.

Economic Performance and ROI

A defining attribute of the KOSUN 1m³/h oily sludge treatment system is its ability to balance performance with favorable capital expenditure (CAPEX). By converting hazardous waste into marketable oil and reducing disposal volumes, the system ensures a rapid return on investment. Its compact footprint is ideal for mobile deployment or site-specific localized treatment in oilfields and storage terminals.

Versatile Industrial Applications

The KOSUN oily sludge treatment system is engineered for diverse feedstocks across the oil and gas value chain, including:

  • Waste oil-based drilling muds and drill cuttings.
  • Tank bottom sludge from storage terminals and transport vessels.
  • Settled oily residues from wastewater treatment basins and refinery interceptors.

Adopting the KOSUN 1m³/h oily sludge treatment system represents a forward-looking commitment to both environmental compliance and profitability, aligning waste management practices with modern ESG goals.

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KOSUN Mud Tank Agitator Advantages and Investment Value

In the energy service industry, equipment selection directly impacts Operating Expenditure (OPEX) and Non-Productive Time (NPT). The KOSUN MA Series Mud Agitator, recognized for its rigorous technical specifications, has become a preferred asset for global contractors seeking a high-performance drilling mud agitator.

Diverse Specifications for Precise Mud Mixer Matching

As shown in the technical specifications, KOSUN offers a complete lineup from MA40 (4kW) to MA220 (22kW). This wide power range ensures that for any tank system, clients can select the most efficient mud mixer, preventing unnecessary energy loss and power mismatch.

Flexible Configurations for Enhanced Mud Tank Agitator Efficiency

To eliminate dead zones, these agitators for mud tanks support customizable shaft lengths (up to 2100mm+) based on actual tank depth. Combined with single or double-layer impellers (up to 1000mm diameter), it effectively prevents the deposition of high-density solids across all levels as a reliable Mud Agitator.

Robust Structure for Secure Mud Tank Agitator Operation

Compact dimensions and a chassis weight of up to 738kg (MA220) ensure superior vibration damping for the mud tank agitator during high-load operations. With scientific 1:20/1:25 reduction ratios, the system delivers stable torque while significantly reducing mechanical wear and maintenance frequency.

Why Choose KOSUN as your Mud Agitator Partner

KOSUN provides more than just standalone hardware; we offer optimized mixing solutions backed by proven engineering logic. We ensure every cent of your investment is converted into actual drilling productivity, delivering a superior return on investment (ROI).

Check out our Mud Mixer to complete your drilling waste management setup.