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In the offshore drilling industry, effective separation and reliable fluid handling are crucial. GN Solids Control provides high-performance decanter centrifuges, centrifugal pumps and other solutions to meet these needs.

Solid control Engineering and Customization

With a legacy of separation excellence, GN’s decanter centrifuges are built on proven principles and modern innovations. They are designed to handle tough tasks like processing drilling mud and separating solids, liquids . Each decanter centrifuge can be customized in aspects like bowl speed and conveyor design to maximize efficiency and durability in harsh marine environments.

Advanced Control and Reliable Pumps

GN’s expertise in PLC and electrical control systems allows for real-time monitoring and predictive maintenance, enhancing performance and availability. The centrifugal pumps are designed to handle abrasive fluids and high-viscosity slurries, ensuring longevity and minimal maintenance, which has led to global partnerships with offshore drilling companies.

Global Support with Local Presence

Strategically located branches and partners ensure prompt technical support and fast delivery of products and spare parts, minimizing downtime and logistics costs.

GN Solids Control offers reliable and efficient separation and fluid handling solutions for offshore drilling, with customized centrifuges, advanced control systems and a global support network.

GN Solids, showcased its cutting-edge equipment at the International Trenchless Technology Conference (ITTC) 2025. With a focus on innovation and efficiency, the company highlighted two flagship products designed to address the challenges of modern tunneling and drilling projects: the TBM Slurry Separation Plant and the GNLW632B Dewatering Decanter Centrifuge.

1. TBM Slurry Separation Plant
GN Solids’ TBM Slurry Separation Plant are engineered to deliver high-performance solid-liquid separation for slurry shield tunneling and pipe jacking projects. These systems are particularly suited for urban construction sites where space constraints and high processing efficiency are critical.

Key Features:

Compact Vertical Design: The system maximizes space utilization by arranging equipment vertically, reducing the overall footprint while maintaining robust processing capabilities.

Modular Configuration: The modular design allows flexible combinations to meet diverse project demands. Systems can be assembled into large-capacity setups or split into smaller units for localized operations. This adaptability also supports rapid disassembly and relocation, ideal for mobile construction needs.

High Processing Capacity:

GNTBM-260B: 260 m³/h

GNTBM-360B: 360 m³/h (equipped with GNZS1536-2A high-efficiency double-layer vibrating screen, vibrating amplitude 4-8 mm)

GNTBM-500B: 500 m³/h

Customizable Solutions:

GNTBM-800B (800 m³/h): Combines GNTBM-360B + GNTBM-500B

GNTBM-1000B (1000 m³/h): Dual GNTBM-500B units

GNTBM-1500B (1500 m³/h): Three GNTBM-500B units

Full System Components:
The complete TBM Slurry Separation Plant includes vibrating screens, desanders, desilters, bottom drying screens, slurry feed pumps, and slurry circulation tanks. These components work synergistically to ensure efficient slurry recycling, reduced waste, and enhanced operational continuity for medium to large tunneling projects.

2. Dewatering Decanter Centrifuge: GNLW632B
The GNLW632B Decanter Centrifuge is a game-changer for non-excavation projects requiring fine particle separation. It excels in processing slurry from clay, fine sand, and mudstone formations, offering sustainable and cost-effective solutions.

Key Advantages:

Chemical-Free Operation: Effectively reduces slurry specific gravity and restores slurry properties without chemical additives, minimizing environmental impact.

Compact and Automated: Designed for small footprints, the centrifuge operates continuously with minimal human intervention, ensuring reliability in demanding environments.

Waste Reduction: By optimizing slurry reuse and lowering disposal volumes, the GNLW632B significantly cuts down on waste generation and associated costs.

 

We are proud to announce the successful customization and delivery of Two Sets GN Container-Type Cuttings Dryer Systems for an overseas client, designed to optimize drilling waste management and enhance environmental compliance. This integrated system combines advanced technology, robust performance, and modular portability, making it ideal for oil and gas drilling operations. Below, we break down the key components and features of this cutting-edge solution.

1. GNCD930G-GP Vertical Cuttings Dryer
At the core of the system lies the GNCD930G-GP, a single-stage, continuous-operation horizontal scraper discharge centrifuge from the GNCD Series. This vertical cuttings dryer is engineered to efficiently recover oil-based components from drilling cuttings, reducing the Oil-on-Cuttings (OOC) content to below 5% post-treatment.

Processing Capacity: 30–50 tons per hour (up to 50 tons/hr for GNCD930G-GP).

Versatility: Compatible with oil-based mud (OBM), synthetic-based mud (SBM), and composite-based mud.

Adaptability: Performance correlates with mud viscosity, which is influenced by factors such as solid content, particle size, drilling fluid type, and temperature.

Safety Certifications: Offers multiple explosion-proof certifications, including ExdIIBt4, IECEx, and ATEX, ensuring safe operation in hazardous environments.

This dryer works seamlessly alongside other solids control equipment (e.g., shale shakers, decanter centrifuges, hydrocyclones) to deliver a comprehensive waste management solution.

2. Liquid Storage Tank (1.5m x 2m x 1.2m)
The system includes a durable 1.5m x 2m x 1.2m liquid storage tank for temporary containment of recovered drilling fluids. This tank ensures efficient fluid recycling and minimizes waste, supporting sustainable operations.

3. Progressive Cavity Pump
A high-performance screw pump (progressive cavity pump) is integrated into the system to ensure smooth transfer of drilling mud and cuttings. Its wear-resistant design guarantees reliability in handling viscous or abrasive fluids.

4. Containerized Design
The entire system is housed within a standardized shipping container, enabling easy transportation, rapid deplo  yment, and minimal on-site installation. This modular design is ideal for remote or offshore drilling sites.

5. Screw Conveyor
An automated spiral conveyor efficiently transports dried cuttings to designated disposal or storage areas, reducing manual handling and streamlining workflows.

Why Choose the GN Container-Type Cuttings Dryer System?

Eco-Friendly: Reduces OOC to <5%, meeting stringent environmental regulations.

High Efficiency: Processes up to 50 tons/hr, minimizing downtime.

Global Compliance: Certified for explosion-proof safety and international standards.

Plug-and-Play: Pre-assembled, containerized units save time and labor costs.

GN Solid Control has recently designed and delivered a modular hydrovac slurry dewatering system for an overseas client, providing an

efficient and reliable solution for construction slurry, drilling mud, and industrial wastewater treatment. This advanced system integrates

five core modules—coarse screening, fine screening, desanding & desilting, centrifugation, and chemical dosing—ensuring optimal

solid-liquid separation and environmental compliance.

Key System Modules

1. Coarse Screening Module – GNLMP-1536

The GN GNLMP-1536 mining coarse screen utilizes advanced screening technology to efficiently remove large particles from construction slurry.

With high screening efficiency and large processing capacity, this module serves as the first step in slurry pretreatment, preparing the material

for further fine separation.

2. Double-Layer Fine Screening Module Shale Shaker – GNZS596K

The GNZS596K double-deck shale shaker is widely used in piling, tunneling, oil & gas drilling, and industrial separation processes,offering a

maximum processing capacity of 140 m³/h (616 GPM). Its dual-layer screening design enhances separation accuracy,ensuring finer solids

removal.

3. Desander & Desilter Module – GNZJ594J-8N

The GN mud cleaner combines a desander cyclone, desilter cyclone, and bottom shaker into a compact yet powerful unit. It serves as an ideal

secondary and tertiary solids control solution for drilling fluids, effectively removing fine particles and improving fluid cleanliness.

4. Decanter Centrifuge Module – GNLW553D-VFD

The GNLW553D-VFD is a 22-inch large-bowl decanter centrifuge featuring a full variable frequency drive (VFD) system (ABB/Siemens inverter).

Its intelligent control system automatically adjusts feed rate, bowl speed, and differential speed for optimal dewatering performance. With a

3.3:1 or 4.2:1 length-to-diameter ratio, this centrifuge is ideal for high-capacity slurry treatment across various applications.

5. 20ft Chemical Dosing & Flocculation Module

The GN automatic chemical preparation and dosing unit provides fully automated polymer mixing, storage, and injection, ensuring precise

flocculant concentration for enhanced dewatering. Compatible with decanters, screw presses, and filter presses, this system is widely used

in wastewater treatment for petroleum, chemical, paper, power, coal, pharmaceutical, and food industries.

System Advantages

✔ Modular Design – Easy transportation, installation, and quick on-site deployment

✔ High Efficiency – Multi-stage separation from coarse screening to fine centrifugation

✔ Intelligent Control – Automated chemical dosing and centrifuge adjustment reduce manual operation

✔ Eco-Friendly – Reduces slurry waste volume and meets environmental regulations

Beijing, China – GN Solids Control, a global leader in solids control and separation technology,set to unveil its groundbreaking innovations at the 25th China International Petroleum & Petrochemical Technology and Equipment Exhibition (CIPPE 2025) from March 26–28, 2025, in Beijing. GN showcase its latest advancements at Booth E2168, reinforcing its commitment to driving efficiency, sustainability, and technological excellence in the oil, gas, and environmental sectors.

4th Generation Fully Hydraulic Decanter Centrifuge: Engineered for unmatched precision in solids-liquid separation, reducing downtime and operational costs.

K Version Shale Shaker: Built to withstand harsh offshore environments while delivering high-efficiency screening performance.

G Version 3-Phase Decanter Centrifuge: A breakthrough in three-phase separation, optimizing resource recovery and environmenta compliance.

The company also display its comprehensive portfolio of solids control equipment, including cuttings dryers, high-speed centrifuges, mud cleaners, and shale shaker screens, all tailored to enhance operational efficiency across diverse industries.

Setting New Industry Benchmarks

GN’s solutions are redefining standards through:

Sustainability Focus: Technologies that minimize waste, reduce freshwater consumption, and enable safe discharge or reuse of treated fluids.

Smart Automation: Advanced systems that lower manual intervention, improve accuracy, and streamline workflows.

Customizable Designs: Modular configurations adaptable to project-specific needs, from compact urban tunneling to large-scale offshore operations.