GN Solids Control has successfully delivered a complete drilling waste treatment package to an Africa-based drilling company, featuring two decanter centrifuges (GNLW363CD-VFD) and one vertical cuttings dryer (GNCD930G), along with matching screw conveyors, centrifuge feed pumps, and cuttings dryer washing pumps. This integrated solution is designed to improve drilling waste management efficiency while meeting environmental and operational requirements in challenging field conditions.

Drilling operations in Africa often face harsh environments, variable waste characteristics, and increasing pressure to reduce disposal volumes and recover valuable drilling fluids. GN’s combined centrifuge and cuttings dryer solution addresses these challenges by separating solids from drilling fluids efficiently and producing drier cuttings suitable for easier handling and disposal.

At the core of the system are two GNLW363CD-VFD decanter centrifuges, which are designed for continuous solid-liquid separation of drilling fluids. The 14-inch bowl centrifuges are equipped with variable frequency drives (VFD), allowing operators to precisely adjust bowl speed and differential speed based on feed conditions. This flexibility ensures stable performance even when drilling fluid properties change, such as variations in solids content or viscosity.
The centrifuges feature wear-resistant materials, including hard-facing protection on the screw flights and replaceable wear sleeves, making them well suited for abrasive drilling solids. By efficiently removing fine solids, the centrifuges help maintain drilling fluid quality, extend the service life of downstream equipment, and reduce overall drilling fluid consumption.

Complementing the centrifuge units is the GNCD930G vertical cuttings dryer, a key component for oil-based and synthetic-based drilling waste treatment. The cuttings dryer further processes drilled cuttings discharged from shale shakers, using high-speed centrifugal force to reduce liquid content on the solids. Typical results show significantly reduced oil-on-cuttings levels, helping operators meet environmental regulations while recovering valuable base oil.
The GNCD930G is designed with a robust vertical structure, an adjustable scraper system, and a reliable lubrication system to ensure continuous operation with minimal maintenance. Its compact footprint makes it suitable for both onshore and offshore drilling sites, where space efficiency is critical.

To ensure smooth and reliable operation, GN also supplied matching screw conveyors for solids transfer, centrifuge feed pumps for stable slurry feeding, and washing pumps for the cuttings dryer. These auxiliary systems play a crucial role in maintaining consistent flow, preventing blockages, and supporting automated operation across the entire waste treatment line.
All equipment was manufactured and tested according to GN’s strict quality control standards before shipment. Factory testing included mechanical inspections, vibration checks, and performance verification to ensure reliability upon installation at the drilling site.

With this project, GN Solids Control once again demonstrates its capability to provide integrated drilling waste management solutions tailored to regional requirements. By combining decanter centrifuges, vertical cuttings dryers, and supporting equipment, GN helps drilling contractors in Africa improve operational efficiency, reduce waste disposal costs, and enhance environmental compliance.

GN continues to support oil and gas projects worldwide with proven separation technology, durable equipment design, and professional technical support.

GN Solids Control has successfully delivered a decanter centrifuge treatment system for an oilfield wastewater treatment project in Africa. Designed to handle complex oilfield waste streams, this system integrates mixing, centrifugal separation, chemical dosing, and clean water recovery modules, providing an efficient and reliable solution for wastewater reduction, solids removal, and water reuse in demanding field conditions.

Oilfield wastewater in Africa often contains fine solids, residual oil, chemical additives, and high salinity, making treatment challenging with conventional settling methods. GN’s decanter centrifuge system addresses these challenges through a compact, modular design that ensures stable performance, high separation efficiency, and ease of installation on remote job sites.

The system begins with a mixing module, where incoming wastewater is homogenized to ensure consistent feed conditions. This module is equipped with heavy-duty agitators and transfer pumps that prevent solids settling and allow for uniform distribution of chemicals. Proper mixing is essential to stabilize the feed slurry and maximize the effectiveness of downstream separation.
At the core of the system is the GN decanter centrifuge module, engineered for continuous solid-liquid separation. The high-speed rotating bowl generates strong centrifugal force to separate fine solids from the wastewater efficiently. The centrifuge is designed with wear-resistant materials and protective liners to handle abrasive particles commonly found in oilfield waste streams. With adjustable differential speed and optimized scroll design, the centrifuge can adapt to changing feed properties while maintaining consistent discharge of dewatered solids.

To further enhance separation performance, the system incorporates a chemical dosing module. This automated unit accurately injects flocculants or coagulants into the wastewater stream, promoting particle agglomeration and improving solids capture efficiency. By combining chemical treatment with centrifugal separation, the system achieves lower residual solids in the clarified water and produces drier solids for easier handling and disposal.

Following separation, the clean water recovery and transfer module collects clarified water from the centrifuge and pumps it to storage tanks, reuse systems, or discharge points. The recovered water can be reused for drilling operations, equipment washing, or other on-site applications, significantly reducing freshwater consumption and operating costs. This closed-loop approach supports sustainable oilfield operations and helps operators comply with increasingly strict environmental regulations.

The entire system is built with a modular skid-mounted structure, allowing for fast transportation, installation, and commissioning. This is particularly important for African oilfield projects, where logistics and site access can be challenging. GN’s standardized modules reduce on-site assembly time while ensuring reliable operation under harsh environmental conditions.

With this project, GN Solids Control once again demonstrates its capability to deliver customized wastewater treatment solutions for the global oil and gas industry. By integrating mechanical separation with chemical treatment and water recovery, GN’s decanter centrifuge system helps oilfield operators reduce waste volume, lower disposal costs, and improve environmental compliance.

GN continues to support oilfield wastewater treatment projects worldwide with proven technology, robust equipment design, and professional engineering support.

GN Solids Control is pleased to announce the successful delivery of a complete package of drilling cuttings treatment equipment to a long-term Middle East customer. The package includes three high-G drying shale shakers (GNZS594K) and two vertical cuttings dryers (GNCD930G), forming a highly efficient solution for solids control and waste management in challenging drilling environments.

Advanced High-G Drying Shale Shakers: Maximizing Primary Solids Removal
The GNZS594K High-G drying shale shakers are designed to handle heavy drilling cuttings with exceptional efficiency. These units are widely used in offshore and onshore drilling sites where strict fluid recovery and waste reduction standards are required.

Key features of the GNZS594K include:
High G-force up to 8.0G, effectively removing moisture from cuttings and improving fluid recovery
Four-panel shaker deck with quick-change pretensioned screens
Simple adjustment of deck angle for various drilling conditions
Low noise, stable vibration performance, and extended screen service life
By deploying three units, the customer will ensure continuous and stable processing during high-volume drilling operations.

Vertical Cuttings Dryers: Efficient Oil-Based Cuttings Management
The package also includes two GNCD930G Vertical Cuttings Dryers, a core component for oil-based drilling waste treatment. The GN vertical dryer is specifically engineered to reduce oil retention on cuttings and recover valuable drilling fluids.

Technical advantages of the GNCD930G:
High-speed rotor to achieve low oil content on discharged solids (<5% typical results) Patented automatic oil lubrication system for reduced maintenance Adjustable scraper system to prevent screen blockage Robust stainless-steel construction suitable for harsh Middle East drilling operations The vertical dryer significantly decreases waste transportation volumes and reduces disposal cost, making it a preferred solution for environmentally regulated regions. A Complete Solution for Drilling Waste Reduction When used together, the high-G drying shakers and vertical cuttings dryers form a powerful cuttings treatment line: High-G shaker removes large quantities of drilling fluid from cuttings at the primary stage. Vertical dryer further processes the damp cuttings, recovering additional base oil. The combination helps operators: Reduce waste volumes Lower drilling fluid consumption Improve environmental compliance Increase overall drilling efficiency This integrated system meets the high performance expectations of Middle Eastern drilling contractors who require both reliability and cost-effectiveness in their solids control operations. Supporting Major Oilfield Projects in the Middle East GN Solids Control continues to strengthen its presence in the Middle East, providing turnkey solids control equipment, drilling waste management systems, and customized mud treatment solutions. With local service support and proven field performance, GN remains a trusted partner for major oilfield service companies in the region.

For more information about GN drilling waste management solutions, please feel free to contact us.

GN Solids Control has completed a new equipment delivery to a European drilling service company, supplying a set of high-efficiency drilling mud centrifugal pumps and shear pumps designed for mud transfer, circulation, and rapid mixing operations. This project reflects the growing adoption of GN’s advanced pumping technology across Europe, where operators are increasingly focused on improving mud quality, reducing equipment downtime, and optimizing the total cost of ownership.

For this project, the client required a pumping solution capable of operating under harsh drilling conditions, handling abrasive fluids, and ensuring precise flow performance for downstream solids control equipment. GN’s engineering team selected the GNSB Series centrifugal pump as the core transfer unit. Built with a hardened, wear-resistant pump casing, high chrome alloy components, and a robust mechanical seal, the GNSB pump is well suited for continuous operation in challenging drilling mud environments.

One of the advantages emphasized by the European client is GN’s fully interchangeable design. The GNSB pump shares common dimensions with major global pump models, enabling convenient replacement of parts and seamless integration into existing mud systems. This compatibility minimizes spare parts inventory and reduces long-term maintenance cost — a non-negotiable requirement for many European drilling operators working under strict cost-efficiency guidelines.

Complementing the transfer pump, GN also supplied the GNJQB Series shear pump, which plays a critical role in drilling mud preparation. The shear pump is engineered to break down bentonite and polymers rapidly, significantly improving hydration and ensuring uniform mud properties. Unlike standard centrifugal pumps, the GN shear pump produces a powerful shearing effect that enhances fluid structure, stabilizes gel strength, and shortens mud mixing time.
For drilling contractors, optimized mud mixing directly translates into better wellbore stability, reduced chemical usage, and more consistent drilling performance. With environmental regulations tightening across Europe, the ability to reduce additives without compromising mud performance is a major operational advantage.

Before shipment, all equipment underwent GN’s comprehensive quality inspection, including:
mechanical seal performance testing
flow curve verification
casing pressure endurance tests
motor safety and electrical reliability checks
dynamic balancing for impellers
This stringent testing ensures each pump performs reliably in the field and meets European compliance requirements. The equipment is provided with CE certification, making it suitable for both onshore and offshore operations.

Another important aspect of this project is GN’s engineering support. GN worked closely with the client to review the mud system arrangement, recommend optimized pump configurations, and ensure correct alignment of inlet/outlet pipelines. This engineering cooperation helped the client reduce installation time and avoid future operational issues.

GN Solids Control continues to strengthen its presence in Europe by providing technologically advanced, cost-effective, and durable pumping solutions. With decades of experience in solids control and fluid management equipment, GN remains a trusted partner for drilling companies seeking reliable mud treatment technologies.

As hydrovac excavation continues to expand across global markets, efficient slurry management has become a critical operational requirement. Hydrovac trucks generate large volumes of water-soil mixtures that must be processed, dewatered, and disposed of in a cost-effective and environmentally compliant manner. To help contractors reduce disposal costs, recover reusable water, and minimize downtime, GN Solids Control has delivered its GNLW454GT Mud Dewatering Centrifuge, designed specifically for hydrovac slurry treatment applications.

The GNLW454GT is a high-capacity, 18-inch bowl decanter centrifuge, engineered to handle fine solids separation while maintaining continuous and stable operation. Hydrovac waste typically consists of fine clay, silt, sand, and suspended solids with varying densities. These characteristics require a centrifuge with strong torque output, precise control of differential speed, and high G-force to achieve effective liquid-solids separation. The 454GT meets these challenges through its enhanced torque gearbox, wear-resistant bowl design, and optimized scroll geometry.

One of the major advantages of using the GNLW454GT in hydrovac slurry treatment is its ability to significantly reduce the volume of liquid waste, producing a drier solids discharge. The dryer the solids, the lower the disposal cost—and for many hydrovac contractors, disposal fees represent the largest operating expense. With the GN centrifuge, customers have reported substantial reductions in the number of truckloads sent to disposal sites, improving both operational efficiency and profitability.
In addition to solids reduction, the centrifuge produces clearer effluent water, which can be reused on site for hydrovac operations or discharged according to local environmental regulations. This not only minimizes fresh water consumption but also supports more sustainable jobsite practices.

The GNLW454GT is built with robust, industry-proven materials, including tungsten carbide wear protection on the scroll, tiles along the bowl inner surface, and an abrasion-resistant feeding system. All components are designed to withstand the highly erosive nature of hydrovac slurry, ensuring long service life and reduced maintenance frequency. The machine is available with either VFD control or fixed-speed operation, with the VFD package allowing operators to adjust bowl speed, differential speed, and feed rate in real time to achieve optimal performance under changing conditions.

For mobile jobsite requirements, GN also provides skid-mounted or containerized system options, integrating pumps, polymer dosing units, and control panels into a compact processing unit. This allows the GNLW454GT centrifuge to be deployed at transfer stations, hydrovac dumping facilities, recycling centers, or directly at project sites.

With decades of experience in solids control and separation technology, GN Solids Control continues to support customers in the hydrovac, tunneling, construction, mining, and drilling sectors worldwide. The successful deployment of the GNLW454GT Mud Dewatering Centrifuge demonstrates GN’s commitment to offering reliable, efficient, and field-proven solutions for demanding slurry management applications.

GN Solids Control is pleased to announce the successful delivery of a complete solids control package to a European drilling contractor operating a 2000HP drilling rig. This latest shipment includes three GNZS594K high-performance shale shakers, one GNZJ594K-3S16N mud cleaner, one GNZCQ360 vacuum degasser, and one GNLW363D decanter centrifuge. The package forms a fully integrated solution designed to optimize drilling fluid quality, improve solids removal efficiency, and support overall rig performance in demanding drilling environments.

At the front end of the system, the three GNZS594K shale shakers handle the primary solids removal duty. The GNZS594K is GN’s flagship linear-motion shaker, equipped with a large 4-panel screen deck and engineered for high G-force vibration. The unit ensures effective separation of cuttings and protects downstream equipment by reducing solid loading. With quick-change screen technology, composite frame screens, and a robust mechanical structure, the GNZS594K provides the durability and efficiency required for 24/7 rig operations.

To further enhance solids control, the package includes one GNZJ594K-3S16N mud cleaner, an integrated unit combining a high-capacity shale shaker with 3 × 10-inch desander cones and 16 × 4-inch desilter cones. This three-stage separation system removes both sand-size and silt-size solids to maintain the drilling mud within the required parameters. By integrating hydrocyclone separation with fine-screen drying, the mud cleaner minimizes waste volume and reduces dilution costs for the rig operator.

Gas entrainment in drilling fluids can lead to pump cavitation, reduced mud density, and safety risks. To address this, GN supplied one GNZCQ360 vacuum degasser, designed specifically for high-capacity drilling rigs. The unit effectively removes entrapped gas from the drilling fluid without disturbing the mud properties. Featuring a belt-driven structure, stainless-steel components, and a maintenance-friendly design, the GNZCQ360 ensures stable mud density and protects the operation of centrifugal pumps and mud mixing equipment.

Completing the solids control line is the GNLW363D decanter centrifuge, one of GN’s most widely used models for barite recovery and fine-solids management. With a 14-inch bowl and a high-speed capability, the centrifuge efficiently removes low-gravity solids while allowing valuable barite to be reused. The GNLW363D provides consistent performance, simplified maintenance, and reliable operation under varying drilling conditions.

This package represents GN’s commitment to supporting global drilling contractors with advanced, field-proven solids control equipment. For operators in Europe, where environmental compliance, efficiency, and operational reliability are top priorities, GN provides a balanced solution that enhances mud quality, reduces waste, and helps lower overall drilling costs.

GN Solids Control continues to expand its footprint in the European oil and gas market by delivering reliable equipment solutions backed by professional service, fast delivery, and comprehensive technical support.

GN Solids Control has successfully delivered two complete 1000GPM HDD mud cleaning systems to a valued customer in Australia. These systems are designed to provide efficient drilling fluid recycling and solids separation for horizontal directional drilling (HDD) and other trenchless construction projects. With GN’s proven technology and modular design, the systems ensure cleaner drilling mud, reduced environmental impact, and improved project efficiency.

Each 1000GPM system consists of a 11.5-meter mud tank, two double-layer shale shakers, two 10-inch desander cyclones, ten 5-inch desilter cyclones, three centrifugal pumps, one jet mud mixing hopper, and one mud agitator. Together, these components form a compact, complete, and efficient mud recycling package capable of handling high mud volumes while maintaining consistent performance.

The dual-deck shale shakers serve as the first stage of solids control, effectively removing large and medium-sized particles from the drilling mud. The upper deck handles coarse solids, while the lower deck processes finer materials, maximizing solids removal efficiency. Equipped with GN’s high-quality composite frame shaker screens, the units ensure long life, easy maintenance, and fast screen replacement.

The desander and desilter cyclones represent the second and third separation stages. Made of wear-resistant polyurethane, the two 10-inch desander cones remove particles down to 45 microns, while the ten 5-inch desilter cones capture solids as fine as 20 microns. This multi-stage design guarantees a stable mud quality that meets the requirements of modern HDD operations.

The centrifugal pumps supplied with the system are GN’s GNSB series, known for their compact structure, high efficiency, and interchangeability with international brands. These pumps are used for both feeding the cyclones and mixing drilling fluids through the jet mud mixing system, which includes a venturi hopper to add bentonite or other additives efficiently.

All equipment is mounted on a heavy-duty mud tank with integrated walkways, ladders, and handrails for safe and easy access. The tank is coated with an anti-corrosion epoxy finish, ensuring long service life under harsh job site conditions.
The successful delivery of these two 1000GPM HDD mud cleaning systems once again highlights GN Solids Control’s expertise in providing turnkey trenchless mud treatment solutions. With years of experience and a strong presence in global HDD markets, GN continues to support customers with reliable, cost-effective, and environmentally responsible solids control equipment.
For more details about GN’s HDD mud recycling systems, please feel free to contact us.

GN Solids Control is proud to announce the successful delivery of multiple K Series shale shakers to a reputable oilfield service company in the Middle East. This project once again reinforces GN’s strong presence in the region and demonstrates our capability to provide high-efficiency solids control equipment for demanding drilling environments.
The GN K Series shale shaker, specially engineered for oil & gas drilling rigs, plays a critical role in the first-stage separation of drilling fluids. By efficiently removing large cuttings from the drilling mud, the unit helps maintain optimal mud properties, reduces wear on downstream equipment, and significantly lowers overall drilling costs.

🌟 Key Advantages of GN K Series Shale Shaker
✅ High G-force Linear Motion Design
Up to 7.5G vibration strength ensures excellent separation efficiency even with high-viscosity drilling mud.
✅ Quick Screen Replacement System
Wedge-locking technology allows fast and safe screen installation, minimizing rig downtime.
✅ API RP 13C Compliant Screens
GN’s own premium composite screens provide longer lifespan and higher conductance, improving total solids removal performance.
✅ Flexible Flow Capacity for Different Rig Sizes
Models like GNZS594K or GNZS703K are available to match drilling rigs from 1000HP to 3000HP.
✅ Use of International Brands for Key Components
Vibration motors and electrical components can be ATEX / IECEx certified for hazardous operating areas.

🛠 Designed for Harsh Middle East Conditions
Middle Eastern drilling fields are known for:
• High ambient temperatures
• Abrasive drilling formations
• Strict reliability requirements
GN K Series shale shakers are built with:
• Heat-resistant paint and corrosion protection
• Rugged structural design for extended service life
• Optional offshore skid package for platform rigs
These units have been fully tested before shipment to ensure a trouble-free installation and smooth commissioning.

✅ Result: Improved Mud Recycling & Lower Cost
After integration into the customer’s solids control system, the GN shakers are expected to:
• Enhance mud quality and drilling efficiency
• Reduce disposal volume and transportation cost
• Extend the lifecycle of downstream centrifuges and pumps

📌 Conclusion
The successful deployment of the GN K Series shale shaker showcases our continuous effort in supporting Middle East energy development. GN Solids Control will keep delivering innovative separation solutions, professional technical support, and fast local service to global partners.
For more details about shale shaker solutions or onsite support — GN is always here to help.

GN Solids Control has successfully delivered eight sets of GN Jet Mud Mixing Hopper Units to a valued client in Europe. These systems will be used to support various drilling and mud preparation projects, ensuring precise and efficient mixing of drilling fluids for stable drilling operations.

Each mud mixing package includes a GNSB8×6 centrifugal pump (90kW), a venturi mud mixing hopper, and a heavy-duty skid base. The system is designed for rapid and homogeneous mixing of bentonite, barite, and other drilling additives into the active mud system, ensuring proper fluid properties for both onshore and offshore drilling applications.
The GNSB8×6 centrifugal pump serves as the power source for the jet mixing process. Built with wear-resistant materials and a compact design, the pump ensures long service life and easy maintenance. Its high flow rate and stable pressure performance make it ideal for continuous mixing operations in demanding drilling environments.

The venturi mixing hopper is equipped with a scientifically designed venturi nozzle that creates a strong suction effect, enabling fast and efficient blending of dry additives into the circulating drilling mud. The hopper is made of durable carbon steel with an anti-corrosion coating, ensuring reliability and consistent performance under high-pressure conditions.
All components are mounted on a solid structural skid base, allowing easy transportation, installation, and integration with existing mud systems. The modular design also enables flexible configuration with mud tanks, mixing systems, or solids control units, depending on site requirements.

The Jet Mud Mixing Unit is an essential part of any modern drilling fluid system, ensuring accurate control of mud density and viscosity. Properly mixed drilling mud not only stabilizes boreholes but also improves drilling penetration rates and reduces equipment wear.

GN Solids Control designs and manufactures a full range of mud mixing and solids control equipment, including shale shakers, mud cleaners, decanter centrifuges, and slurry vacuum pumps. With decades of experience and an extensive project record across more than 80 countries, GN provides customized and efficient solutions for oil & gas drilling, HDD, tunneling, and geothermal projects.

The successful delivery of these 8 Jet Mud Mixing Hopper Units once again demonstrates GN’s capability to provide reliable, field-proven equipment that meets international standards and supports global drilling operations.

For more information about GN’s mud mixing systems and other drilling fluid solutions, please feel free to contact us.

GN Solids Control has recently completed the delivery of three customized mud desilter systems for an offshore oilfield project in South America. Designed to meet the demanding requirements of offshore drilling, these systems provide high-efficiency solids control within a compact, transportable footprint that fits perfectly into the platform’s limited space.

Each mud desilter package includes a hydrocyclone desilter, a bottom shale shaker, and a mud tank assembly. The system is engineered to handle fine solids separation, removing particles down to 15 microns from the drilling fluid. This ensures the mud’s viscosity and density remain within optimal parameters, which is critical for maintaining drilling stability and preventing equipment wear.

To accommodate offshore transport and installation constraints, GN’s engineers developed a modular design where the desilter assembly can be placed inside the mud tank for shipment. This innovative configuration minimizes space usage during logistics and reduces offshore installation time. Upon arrival at the platform, the units can be quickly assembled and connected to the existing mud circulation system, significantly accelerating the project’s commissioning process.
The hydrocyclones used in the desilter are made of high-grade polyurethane, providing excellent resistance to wear and corrosion while maintaining consistent separation efficiency. The bottom shaker, equipped with GN’s linear motion vibrating deck and high-strength composite frame screens, delivers powerful solids removal with reduced fluid loss. This combination guarantees long-term, stable operation even under heavy load conditions.

The mud tanks are designed for offshore use, featuring marine-grade steel construction and anti-corrosion epoxy coating, ensuring long service life and safety in marine environments. Each tank includes all necessary accessories—lighting, walkways, handrails, and ladders—complying with offshore operation standards.

This project further strengthens GN’s position as a global leader in solids control and drilling fluid management solutions. With extensive experience in offshore applications, GN offers a full range of equipment, including shale shakers, mud cleaners, decanter centrifuges, and vacuum pumps. The company’s solutions are widely used in offshore, onshore, and trenchless drilling operations across more than 80 countries.

By integrating efficiency, durability, and environmental responsibility, GN Solids Control continues to deliver high-performance systems that support the success of offshore drilling projects worldwide.
For more information about GN’s offshore mud desilter systems, please feel free to contact us.