Decanter Centrifuge

Circulation Equipment

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Product Introduction

Our Decanter Centrifuge serves as the final-stage fine solids control device in complete drilling fluid purification systems. It is widely applied to onshore and offshore oil & gas drilling, geothermal projects, water well drilling, horizontal directional drilling (HDD), as well as waste mud treatment and industrial sludge dewatering, delivering reliable separation for both water-based and oil-based drilling mud.

This equipment operates based on the centrifugal sedimentation principle. The drum and internal screw conveyor rotate at high speed with a slight speed difference, generating powerful centrifugal force. Mud enters the rotating drum, and tiny solid particles are pushed to the drum wall. Solids are continuously conveyed to the slag outlet by the screw, while clarified drilling fluid flows out from the overflow port. It efficiently separates ultra-fine particles down to 2–7μm and realizes fully continuous feeding, separation and discharging.

Available in multiple models with diverse drum sizes, our centrifuges cover a wide range of processing capacities to match different project scales. Key rotating parts adopt high-strength wear-resistant alloys, while premium bearings and electrical components ensure stable long-term operation even under harsh working conditions. Featuring a compact skid-mounted structure, the unit is easy to install and integrates seamlessly with standard mud tanks. Its modular design simplifies daily inspection and component replacement, cutting maintenance costs and operational downtime.

With outstanding separation performance, it effectively recycles barite, optimizes mud properties and reduces mud waste. Supported by 12-month warranty, 24/7 technical assistance and stable spare parts supply, our decanter centrifuge is a practical and cost-effective solution for global drilling and environmental treatment projects.

After Sales Service

Standard Warranty
12 months .
Global Support
24/7 technical assistance and spare parts supply.
Training
On-site or remote operation/maintenance training.

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Product Details

Key Features

Ultra-fine Particle Separation

Efficiently separates 2–7μm fine solids from drilling mud, serving as the final-stage solids control unit for high-precision purification.

Wide Capacity Range

Multiple models support processing capacities from 35m³/h to 90m³/h, adaptable to different drilling scales and flow demands.

Robust & Durable Construction

High-strength wear-resistant rotating parts and premium components ensure stable operation under harsh, abrasive mud conditions.

Continuous & Automatic Operation

Drum and screw conveyor work with differential speed to realize continuous feeding, separation and discharge, boosting overall efficiency.

Flexible Configuration Options

Various drum diameters (355mm/450mm/530mm) and matched motor combinations meet diverse operational requirements.

Compact & Easy Installation

Skid-mounted design with a small footprint fits standard mud tank systems for quick on-site integration.

Low Maintenance & High Reliability

Modular components simplify inspection and replacement, minimizing downtime and operational costs.

Complete After-sales Support

Backed by a 12-month warranty, 24/7 technical assistance, on-site/remote training and stable spare parts supply.

Technical Specifications

Model	HLW355×1257-N	HLW450×1000-N	HLW450×1258-N	HLW530×1320-N	HLW530×1828-N
（Max.Capacity)	35m³/h	50m³/h	60m³/h	65m³/h	90m³/h
（Drum Dia.）	355mm	450mm	450mm	530mm	530mm
（Separation Point）	2~5μm	5~7μm	2~5μm	2~5μm	2~5μm
（Main Motor）	30kW	37kW	37kW	55kW	90kW
（Aux Motor）	7.5kW	7.5kW	11kW	22kW	37kW

Product Structure

Rotating Assembly

High-strength wear-resistant drum (355/450/530mm) and screw conveyor with differential speed, forming the core separation unit.

Dual-motor Drive System

Main motor (30–90kW) for drum rotation + auxiliary motor (7.5–37kW) for screw speed control, ensuring continuous operation.

Skid-mounted Base & Vibration Dampers

Heavy-duty frame with shock absorbers for stable, low-vibration operation and easy installation.

Fluid Handling Ports

Feed inlet, liquid overflow outlet, and solid underflow outlet for continuous feeding, clarification, and solids discharge.

Control & Auxiliary Parts

Electrical cabinet, bearings, seals, and lubrication system for safe, reliable long-term performance.

Compatible Brands

Brandt，Derrick，MI-SWACO

Applications

Onshore & Offshore Oil and Gas Drilling
Geothermal Well & Water Well Drilling
Horizontal Directional Drilling (HDD)
Waste Drilling Mud Treatment
Industrial Sludge Dewatering
Coalbed Methane & Shale Gas Development
Mine Slurry and Tailings Disposal
Environmental Protection & Wastewater Treatment

FAQ

Q: What is a decanter centrifuge used for in drilling operations?

A: It is the final-stage solids control equipment, designed to remove ultra-fine particles (2–7μm) from drilling mud, optimize mud properties, and protect downstream tools.

Q: What is the processing capacity range of your centrifuges?

A: We offer models covering 35m³/h to 90m³/h, adaptable to different project scales and flow demands.

Q: What particle size can the centrifuge separate?

A: It efficiently separates particles as small as 2–7μm, ideal for high-precision fine solids control.

Q: How does the decanter centrifuge work?

A: It uses centrifugal sedimentation: the high-speed rotating drum generates strong centrifugal force, pushing solids to the wall. The screw conveyor then continuously conveys solids out while clarified liquid flows through the overflow port.

Q: Is it compatible with both water-based and oil-based mud?

A: Yes, it works reliably with both water-based and oil-based drilling fluids.

Q: What are the key components of the centrifuge?

A: Core parts include the wear-resistant drum, screw conveyor, dual-motor drive system, skid-mounted base, and feeding/discharging ports.

Q: How about daily maintenance?

A: Modular design enables quick inspection and part replacement, minimizing downtime. We also provide full technical support.

Q: What after-sales services do you provide?

A: We offer a 12-month warranty, 24/7 technical assistance, on-site/remote training, and stable spare parts supply.

How Decanter Centrifuge Works

The decanter centrifuge operates based on the centrifugal sedimentation principle. The drum and screw conveyor rotate at high speed with a speed difference, generating powerful centrifugal force. After drilling mud enters the drum, solid particles are thrown to the inner wall. The screw conveyor continuously transports solids to the slag outlet for discharge, while the clarified liquid flows out from the overflow port. The whole process is fully continuous.

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Decanter Centrifuge