GN Solids Control has successfully delivered two sets of GNOST-15 Oil Sludge Treatment Systems to a valued customer in Asia. These systems are designed to treat waste oil sludge generated from oilfield drilling operations, refinery bottom tanks, and other industrial sludge with high efficiency and minimal environmental impact.

Comprehensive Modular Design for Efficient Oil Recovery
Each GNOST-15 system is a complete and modular oil sludge treatment solution. The system is engineered to handle a capacity of up to 1–2 tons per hour, depending on the sludge composition. The modular setup allows for flexible installation and easy transportation.
1. Sludge Feeding Module
Equipped with a reliable progressive cavity pump, this module is responsible for transferring raw sludge to the system at a controlled flow rate.
2. Premixing Tank Module
This tank uses an agitator and heating coils to reduce sludge viscosity and ensure homogeneous mixing with water and chemicals, enhancing downstream separation performance.
3. Coarse Screening Module
The GN High-G Shale Shaker effectively removes large particles and debris from the sludge, protecting the decanter centrifuges and extending their lifespan.
4. Two-Phase Decanter Centrifuge Module (GNLW554)
This high-speed decanter centrifuge separates fine solids from the liquid phase, achieving efficient solid-liquid separation before oil-water separation.
5. Three-Phase Decanter Centrifuge Module (GNLWS554)
GN’s advanced tricanter centrifuge is designed for separating oil, water, and fine solids simultaneously, enabling high recovery of usable oil and clean water.
6. Chemical Dosing Unit
The chemical dosing system prepares and injects flocculants or demulsifiers into the sludge to optimize separation results in both centrifuges.
7. Steam Generator Module
Heating is a key part of reducing sludge viscosity and enhancing demulsification. The integrated steam generator module provides the necessary thermal energy for the treatment process.

Why Choose GNOST-15 Oil Sludge Treatment System
High Oil Recovery Rate
Designed to maximize recovery of valuable oil from waste sludge with BS&W (Basic Sediment & Water) below 3%.
Environmental Compliance
Treated water and solids meet local environmental standards for disposal or reuse.
Customizable & Modular
The system can be tailored for different sludge types and site conditions, offering flexibility for clients with various project requirements.
Proven Performance
GN has delivered oil sludge systems to clients across the globe including the Middle East, Southeast Asia, and South America.
GN Solids Control – Leading Provider of Waste Management Solutions。

The successful delivery of these two GNOST-15 units reflects GN’s commitment to providing cutting-edge oil sludge treatment technologies. GN Solids Control continues to develop and supply systems that address the growing environmental challenges faced by oilfield service companies.
For more information about GN’s oil sludge treatment solutions, please feel free to contact us

GN Solids Control, a leading manufacturer of solids and liquid separation equipment, has successfully delivered a complete set of shale shaker and mud cleaner systems for an offshore drilling platform project. Designed to meet the challenging requirements of offshore operations, these units will play a vital role in improving the efficiency and environmental compliance of the drilling mud treatment process.

Reliable Solids Control Equipment for Offshore Demands
Offshore drilling platforms present a unique set of challenges—limited space, strict safety regulations, and continuous operation requirements. GN Solids Control shale shaker and mud cleaner were selected for this project due to their compact footprint, high performance, and robust offshore design standards. The equipment was specially configured for harsh marine environments, offering corrosion-resistant components and explosion-proof control systems.

GN Shale Shaker – First Line of Defense
At the core of the system is GNZS594K high G-force linear motion shale shaker, which efficiently separates large solids from the drilling fluids. With its four-panel screen design and adjustable vibration intensity, it can process high flow rates while ensuring effective cuttings removal. GN’s patented quick screen replacement system also minimizes downtime, a critical factor in 24/7 offshore operations.
The shale shaker is designed to meet Zone 1 or Zone 2 hazardous area standards and is fully compliant with offshore certification requirements such as ATEX and IECEx. Its durable stainless steel deck, oil-based corrosion protection, and marine-grade finish make it ideal for salt-rich offshore environments.

GN Mud Cleaner – Integrated Desander and Desilter
Following the shaker, GN’s mud cleaner unit combines desander and desilter hydrocyclones mounted on a fine screen underflow shaker. This integrated system further refines the drilling mud by removing particles down to 20 microns, significantly reducing wear on downstream equipment and improving mud reuse efficiency.
The hydrocyclones are made from abrasion-resistant polyurethane and are field-adjustable to suit different drilling conditions. The dual-function design—shaker + hydrocyclones—ensures both space-saving installation and performance optimization.

System Benefits and Customer Feedback
The offshore client praised the system for its reliability and easy maintenance. GN’s modular design allows fast assembly and minimal operator intervention. Additionally, the explosion-proof electric control system enables safe and precise operation, even in extreme offshore working environments.
By deploying GN’s solids control equipment, the offshore drilling platform can expect:
Reduced environmental discharge and waste volumes.
Extended life of drilling mud, lowering costs.
Enhanced protection of downstream centrifugal pumps and mud agitators.

This project demonstrates GN Solids Control’s continued commitment to supporting offshore oil and gas operations with high-performance, safety-compliant equipment. Whether for shallow water, deep water, or jack-up rigs, GN provides complete solids control solutions tailored to offshore needs.
To learn more about GN’s offshore drilling equipment and project references, please feel free to contact us.

GN Solids Control has successfully delivered two sets of GNMS-500K Drilling Mud Recycling Units along with three units of GNLW364GT Decanter Centrifuges to an overseas client. This integrated solution is designed to handle drilling fluids efficiently and reduce environmental impact, showcasing GN’s capability in delivering high-standard solids control equipment for global drilling operations.

Tailored Solutions for Drilling Fluid Recovery
Drilling operations produce large volumes of slurry and waste fluid containing cuttings, silt, sand and other solids. GN’s GNMS-500K mud recycling system is a compact yet highly effective unit designed to remove these unwanted solids and recycle the valuable drilling mud for reuse. Each system is capable of handling up to 500 GPM, making it suitable for horizontal directional drilling (HDD), water well drilling, and small to medium-sized oil & gas drilling applications.
The GNMS-500K system integrates a linear motion shale shaker and a desander cone assembly, ensuring dual-stage solid-liquid separation. It significantly enhances drilling efficiency by maintaining low solid content in the drilling fluid, which helps prolong equipment life and reduce mud costs.

High-Performance Decanter Centrifuges for Fine Solids Control
To complement the mud recycling units, the client also received three units of GNLW364GT Decanter Centrifuges, designed for precise fine solids separation. The 14-inch bowl centrifuge is optimized for high-speed performance and robust reliability, capable of separating particles down to 2-5 microns. These centrifuges are widely used in solids control and waste management for oil & gas drilling, especially in projects requiring strict fluid specifications.
The GNLW364GT is built with a wear-resistant bowl and screw conveyor, adjustable differential speed, and a high-speed control system. It ensures maximum fluid recovery while removing ultrafine solids, resulting in cleaner mud for recirculation and reduced waste discharge.

Why GN Equipment Stands Out
GN’s drilling mud recycling units and decanter centrifuges are manufactured to API and ISO standards, ensuring long-term durability and high performance under harsh drilling conditions. All systems are delivered as complete plug-and-play packages with integrated electrical controls, making installation and operation simple for field engineers.

Sustainable, Cost-Effective Drilling Support
By choosing GN’s equipment, the client is now able to:
Reduce drilling fluid costs through effective recovery
Minimize environmental impact from waste discharge
Maintain consistent mud quality, enhancing drilling efficiency
Lower wear and tear on downstream equipment

GN Solids Control remains committed to supporting global drilling companies with innovative and eco-conscious equipment. Whether for HDD, geothermal, or oil & gas drilling projects, GN provides full-spectrum solutions tailored to customer needs.
For more information about GN mud recycling systems and centrifuges, please feel free to contact us.

GN Solids Control is proud to announce the successful delivery of a new batch of Solids Vacuum Pumps to a reputable oilfield service company in Africa. This delivery marks another key step in GN’s continued support of international drilling and waste management operations, particularly in the African market.

The solids vacuum pump, also known as a pneumatic transfer pump, is a powerful and reliable tool for transferring high-viscosity and high-solids-content materials. GN’s GNSP series vacuum pumps are fully air-driven, with no electrical parts, making them especially suitable for hazardous environments such as oil drilling sites. The batch delivered includes GN’s standard GNSP-20B and GNSP-40B models, which are widely used in oil sludge transfer, drilling cuttings transportation, tank cleaning, and environmental waste handling.

These pumps are designed with strong suction power, capable of transferring materials up to 500–1000 meters away (depending on model and material). Thanks to their rugged structure and wear-resistant components, GN vacuum pumps are able to handle materials with up to 80% solids content and particle sizes up to 75mm.

For this particular project, the African customer required a reliable solution for moving oil-based drilling cuttings and sludge mixtures from various drilling sites. After a detailed technical evaluation, GN’s solids vacuum pumps were selected due to their performance, safety features, and ease of maintenance. The delivery also included hose kits, spare parts, and remote operation kits to ensure smooth operation and long-term support.

GN Solids Control continues to expand its presence in Africa, with products serving oilfields in Nigeria, Angola, Egypt, Algeria, and more. Our product line covers solids control equipment, waste management systems, and sludge treatment solutions tailored to harsh site conditions and strict industry standards.

By delivering this batch of vacuum pumps, GN once again demonstrates its dedication to providing cost-effective, efficient, and reliable solutions for oilfield operators worldwide.

To learn more about GN’s solids vacuum pumps and other waste management solutions, please feel free to contact us!

GN Solids Control is proud to announce the successful delivery of a set of advanced drilling fluids decanter centrifuges to a renowned drilling contractor in Asia. This delivery includes 2 sets of GNLW363D-VFD and 1 set of GNLW453D-VFD decanter centrifuges, all equipped with VFD control systems for flexible and precise operations.

As drilling companies continue to emphasize efficient solids control and waste management, GN’s VFD decanter centrifuges provide a high-performance and reliable solution for fluid recycling and fine solids separation in demanding field conditions.

Equipment Highlights:
1. GNLW363D-VFD – High-Speed 14” Decanter Centrifuge
The GNLW363D-VFD is GN’s most popular model, widely used for solids control, barite recovery, and drilling fluid treatment. With a 14-inch bowl diameter and maximum speed up to 3,200 RPM, it delivers excellent separation of low-gravity solids and helps reduce drilling fluid losses. The VFD system allows operators to adjust bowl and conveyor speeds in real time based on mud conditions, ensuring optimal performance across various formations.

2. GNLW453D-VFD – Medium-Speed 18” Decanter Centrifuge
The GNLW453D-VFD is designed for applications where higher capacity and lower G-force are required, such as barite recovery or initial solids removal before fine polishing with a high-speed unit. The 18-inch bowl ensures larger throughput, while the VFD controls offer the same flexibility and precision as the 14” model.

Why GN Solids Control?
Customized VFD Control Panels
All GN VFD centrifuges are supplied with explosion-proof control panels featuring ABB or Siemens inverters, capable of three-speed programming and real-time parameter monitoring.
High-Quality Materials & Manufacturing
GN uses duplex stainless steel 2205/2304 for the rotating bowl and tungsten carbide tiles for the conveyor scroll to ensure long service life and abrasion resistance.
Global References & Proven Track Record
GN decanter centrifuges have been widely deployed across Asia, the Middle East, and North America, with successful references from major oil service companies and drilling contractors.
Integrated Support Services
GN provides installation guidance, spare parts support, and on-site commissioning through its service network and local partners.

This recent delivery is a testament to GN’s continued commitment to supporting the energy sector with world-class solids control equipment. The client will be using the centrifuges in both land-based and offshore operations, where equipment reliability and performance are critical to maintaining drilling efficiency and reducing environmental impact.

GN Solids Control remains dedicated to developing innovative and practical separation technologies that add value to our customers’ operations worldwide.

GN Solids Control is proud to announce the successful delivery of a complete solids control system tailored for a 2000HP drilling rig to a leading drilling company in India. This milestone project once again demonstrates GN’s capability in delivering comprehensive and high-performance solutions for global drilling operations.

The customized solids control package is designed to meet the demanding requirements of deep drilling activities. It includes a full range of solids control equipment, beginning with one GNZYQ1200A Liquid-Gas Separator. This critical unit ensures safe and efficient gas separation from the drilling mud, protecting downstream equipment and improving safety on the rig site.

The first stage of solids control is managed by three GNZS594K linear motion shale shakers, known for their high G-force and efficiency in removing large solids from drilling fluids. To remove entrained gas from the fluid, the system also includes one GNZCQ360 Vacuum Degasser, enhancing mud density stability and protecting centrifugal equipment.

The second and third stages of separation are handled by the GNZJ594K-2S12N Mud Cleaner, a combination of a desander and desilter integrated with a fine mesh shaker. This advanced design significantly reduces footprint while maintaining high separation performance, ensuring cleaner mud for recirculation.

To circulate the drilling fluids throughout the system, nine centrifugal pumps are included. These pumps are Mission-compatible and robustly designed for continuous service under tough field conditions.

The system is supported by ten mud tanks, providing ample space for fluid processing, mixing, and storage. Each tank is outfitted with the necessary internal piping and electrical fittings. To keep the fluids in motion and prevent solids settling, nineteen mud agitators are strategically installed. Additionally, seventeen mud guns are provided for supplemental agitation and tank cleaning.

For drilling fluid preparation, the package includes two jet mixing hoppers, allowing efficient mixing of new chemicals or bentonite into the active system. All equipment is powered and coordinated by an integrated electrical control system, engineered for reliability and operational safety.

This delivery marks another key step in GN Solids Control’s ongoing cooperation with major oilfield service companies in India. By providing equipment that complies with international standards and offers exceptional durability and performance, GN continues to expand its footprint in South Asia’s energy sector.

For more details on GN Solids Control’s customized solutions of high-spec drilling rigs, please feel free to contact us.

GN Solids Control recently completed the commissioning of a high-standard 1000HP drilling rig mud tank system for a key domestic client in Yunnan Province, China. The project marks another successful deployment of GN’s advanced solids control solutions tailored for deep drilling operations.
The entire system is designed to support a 1000HP drilling rig with efficient, safe and continuous solids-liquid separation and fluid circulation, meeting the demands of complex geological formations.

Key Components of the System:
4 Mud Tanks
Designed to accommodate various drilling fluids processes such as active mud, reserve, mixing, and intermediate storage, the mud tanks provide a solid and corrosion-resistant structure for field operations.
3*GNZS594K Shale Shakers
These high-performance linear motion shale shakers are configured in parallel to handle large volumes of drilling fluids. Equipped with GN’s patented shaker screen technology, they offer excellent cuttings removal efficiency, longer screen life, and easy maintenance.
1 × GNZCQ270 Vacuum Degasser
Designed to remove entrained gas from drilling mud, the vacuum degasser ensures the density and stability of the fluid are maintained, preventing potential well control issues.
1 × GNZJ752K-2S Desander & 1 × GNZJ752K-12N Desilter
These dual-stage hydrocyclone units are integrated with mini shale shakers underneath. The desander (10” cones) and desilter (4” cones) remove fine solids down to 20–25 microns, improving downstream equipment performance and extending drilling fluid life.
1 × GNLW452D Decanter Centrifuge
As a medium-speed centrifuge, this model efficiently separates fine solids and recovers barite. It is a critical component for maintaining fluid properties and optimizing the overall mud program.
Supporting Equipment
The system includes agitators, centrifugal sand pumps, mixing hoppers, and a centralized control system, ensuring smooth mixing, circulation, and automation across the tanks. All electrical components are explosion-proof to meet on-site safety regulations.

On-Site Commissioning & Support
GN’s technical service team was deployed to Yunnan for on-site commissioning and training. The system was tested and verified for performance, fluid handling capacity, and process integration, achieving full operational readiness with high customer satisfaction.

Reliable Partner for Drilling Solids Control
As a leading manufacturer in the solids control industry, GN Solids Control continues to support oil & gas operators worldwide with custom-engineered solutions, modular systems, and prompt after-sales service. From shale shakers to complete mud tank systems, GN’s equipment is field-proven in both domestic and international drilling markets.

For more details about GN drilling mud systems or to discuss your project requirements, feel free to contact our team.

GN Solids Control is proud to announce the successful delivery of a complete 750HP Workover Rig Solids Control System to a well-known oilfield service company in China. This customized system is designed to ensure efficient drilling fluid recycling and waste minimization during workover and drilling operations, helping the client improve operational efficiency and meet environmental compliance standards.

The system is tailored to match the needs of a 750HP workover rig, comprising essential solids control equipment, including:
Mud Tank System:
The foundation of the setup is a high-strength, corrosion-resistant mud tank that serves as the base for all solids control processes. It is designed for optimal fluid management, providing compartments for different fluid stages, and integrating walkways and handrails for safety and accessibility.

Dual Shale Shakers GNZS594K:
The system features two GNZS594K linear motion shale shakers, known for their high G-force vibration and large screen area. These units effectively remove large solids from the drilling mud, extending the life of downstream equipment and reducing overall waste volumes.

Mud Cleaner GNZS594K-2S12NK:
Following the shale shakers, GN provides a GNZS594K-2S12NK mud cleaner, combining desander and desilter cyclones mounted over a shale shaker. This compact unit offers efficient three-stage solids control within a small footprint and is ideal for workover rig applications.

Decanter Centrifuge GNLW452D:
A GNLW452D medium-speed decanter centrifuge is used for the final stage of solids removal, targeting ultra-fine particles in the drilling fluids. With a bowl diameter of 18 inches and reliable VFD control, this centrifuge ensures precise and stable performance even under fluctuating mud conditions.

Auxiliary Equipment:
To support the system, GN has also provided high-performance centrifugal pumps, mud agitators, jet mud mixers (mud hopper), and a centralized electrical control system. These components are fully integrated into the tank layout, offering reliable operation and easy maintenance.

The entire system is manufactured in GN’s ISO-certified facility, adhering to strict quality control procedures and using internationally sourced key components for critical parts. GN’s expertise in solids control system integration allows the client to deploy the equipment with minimal on-site assembly and commissioning time.

This successful delivery further strengthens GN’s position as a trusted provider of complete solids control solutions for workover and drilling applications. GN Solids Control remains committed to supporting domestic and international clients with high-performance, cost-effective systems that improve drilling efficiency while protecting the environment.
For more information about GN’s solids control equipment, please feel free to contact us anytime.

The Offshore Technology Conference (OTC) 2025 held at the NRG Center in Houston once again served as a vital platform for global energy professionals to connect, collaborate, and explore advanced technologies. GN Solids America, a subsidiary of GN Solids Control, proudly showcased its latest innovations and solid control equipment at this prestigious event, reinforcing its growing presence in the North American market.

As one of the leading manufacturers of solids control and waste management equipment, GN Solids America drew considerable attention from visitors, including drilling contractors, service companies, and engineers focused on efficiency and environmental compliance. Our booth featured several flagship products that reflect our commitment to reliable, cost-effective, and high-performance solids control solutions.

Among the equipment showcased, the GNLW223D Decanter Centrifuge stood out as a highlight. With a 9-inch bowl diameter, this compact centrifuge is specifically designed for small-volume but high-precision separation applications. It is widely used in oil sludge treatment, core drilling fluid testing, and small-capacity dewatering projects. Capable of operating at speeds up to 4500 RPM, the GNLW223D delivers excellent separation performance in a small footprint, making it a perfect solution for labs, mobile units, or pilot projects.

In addition to the centrifuge, GN also featured its GNZS594 Shale Shaker, a four-panel vibrating screen with high G-force and robust structure. This shaker, combined with GN’s high-quality composite shaker screens, offers reliable and cost-effective primary solids control in drilling operations.

Another important system on display was the GNSP-10B Vacuum Pump, designed to handle high-viscosity sludge and drilling cuttings. Fully air-operated and explosion-proof, this pump is ideal for hazardous areas such as offshore platforms or refineries.

GN Solids America emphasized its localized support, with a Houston-based warehouse offering spare parts, equipment inventory, and technical service for North and South American clients. The positive feedback and interest received at OTC reaffirm GN’s commitment to delivering innovative, practical, and responsive solids control solutions globally.

We sincerely thank all the visitors, partners, and friends who stopped by the GN booth during OTC 2025 and look forward to building stronger collaborations in the future.

GN Solids Control has successfully delivered a complete set of mud treatment equipment—including a high-performance decanter centrifuge and centrifugal pumps—to an offshore drilling contractor. This delivery reflects GN’s commitment to supporting efficient and environmentally responsible drilling operations in the offshore oil & gas sector.

Offshore Projects Demand Reliable Mud Management
In offshore drilling, managing drilling mud is more than just a technical necessity—it directly impacts drilling efficiency, equipment integrity, and environmental safety. The high cost of fluid loss and the limited space and logistics offshore make closed-loop mud treatment systems a crucial component.
To help the client achieve these goals, GN Solids Control supplied a GNLW series decanter centrifuge along with several SB series centrifugal pumps designed for continuous-duty operation in marine environments.

GNLW Series Decanter Centrifuge: Compact Yet Powerful
The GN GNLW centrifuge excels in fine solids removal, especially for offshore applications where mud properties must be kept within tight parameters. With variable speed control and automatic operation, the centrifuge efficiently removes ultra-fine solids and recovers valuable barite, helping extend the life of drilling fluid and reduce environmental discharge.
Key technical advantages:
Adjustable bowl speed for flexible operations (up to 3200 RPM)
Wear protection for all critical components
Optional ATEX / IECEx explosion-proof controls
Skid-mounted design ideal for limited offshore space
This ensures compliance with offshore environmental regulations while improving drilling stability.

GN Centrifugal Pumps: The Workhorse of Fluid Transfer
The supplied GN SB series centrifugal pumps are built for reliability and performance. These pumps are essential in delivering mud to the centrifuge and recirculating processed fluid, maintaining consistent flow rates under pressure. Their rugged build and efficient hydraulic design reduce energy use and minimize downtime.
Pumps are available with:
Mission Magnum-style compatibility
Mechanical seal for leak-free operation
Compact layout and easy maintenance access
Explosion-proof motors for offshore safety
Together, the pump-centrifuge package creates a seamless mud treatment line, ensuring that the offshore operator achieves maximum solids removal with minimum manual intervention.

Supporting Sustainability and Performance Offshore
As the global oil industry places increasing emphasis on sustainability and environmental compliance, GN’s integrated solids control solutions offer a significant advantage. By improving solids removal, reducing waste volume, and enhancing fluid reuse, the systems of GN Solids Control contribute to greener, safer, and more cost-effective offshore operations.

This project showcases GN Solids Control’s ability to deliver tailor-made solutions for offshore clients, from equipment design and manufacturing to logistics and technical support.
GN Solids Control continues to serve offshore projects with innovative equipment that meets stringent standards and delivers performance in the most challenging environments.