Category: centrifuge

GN Decanter Centrifuge System for Africa Oilfield Waste Water Treatment

A complete package of a wastewater treatment centrifuge unit has been fully manufactured and is now ready for delivery to an oil and gas drilling project in Africa. This system is designed specifically to treat wastewater generated during drilling operations, where effective separation of ultra-fine solids is critical to meeting environmental discharge and reuse requirements. Oil and gas drilling wastewater typically contains fine particles, residual drilling fluids, and chemical additives, which require a high-performance dewatering solution with stable and continuous operation.

This centrifuge unit represents a high-standard wastewater dewatering system, engineered to handle ultra-fine solids from treated water streams with high separation efficiency. At the core of the system is a high-speed, large-bowl decanter centrifuge. The large bowl diameter and optimized bowl length provide an extended clarification area and higher centrifugal force, allowing the centrifuge to effectively remove very fine solids while maintaining high throughput and low moisture content in the discharged solids.

To ensure smooth and controlled feeding into the decanter centrifuge, the package is equipped with a matched feeding screw pump. The screw pump is specially selected for its ability to handle variable flow rates and abrasive slurry without causing excessive shear, ensuring stable operation and protecting both the pump and the centrifuge from premature wear.

The system also includes a complete chemical dosing unit, which allows precise injection of flocculants or other treatment chemicals into the wastewater stream. Proper chemical dosing enhances particle agglomeration, significantly improving the separation efficiency of ultra-fine solids and reducing the load on the centrifuge.

In addition, a clean water tank with a dedicated transfer pump is integrated into the package. The clarified water separated by the centrifuge can be collected, stored, and transferred for further treatment, reuse, or safe discharge in accordance with local environmental regulations.

All components of the centrifuge unit are mounted on a telescopic skid structure designed to support and secure the entire package. This skid-mounted design ensures ease of transportation, installation, and on-site integration, while providing structural stability during operation. The complete system reflects a reliable and efficient solution for wastewater treatment in oil and gas drilling fields.

16 Packages GN Solids Control Centrifuge for Offshore Drilling Company

Offshore drilling operations demand significantly higher standards in terms of material grade selection, mechanical design, surface treatment, and painting processes. Equipment used in offshore environments must withstand harsh conditions such as high humidity, salt spray, continuous vibration, and strict safety and environmental requirements. As a result, every component—from structural materials to control systems—must be carefully engineered, manufactured, and tested to ensure long-term reliability and stable performance.

GN Solids Control is a professional manufacturer and solution provider specializing in solids control equipment for offshore drilling mud treatment systems. With extensive experience in both onshore and offshore projects, GN fully understands the stringent technical and quality requirements imposed by offshore operators and classification standards. From the initial design stage through fabrication, assembly, painting, and final inspection, all processes are strictly controlled to meet offshore application standards.

Recently, GN Solids Control successfully completed the manufacturing of 16 sets of high-speed decanter centrifuges for a leading offshore drilling company. These centrifuges are designed specifically for offshore drilling mud treatment, where high separation efficiency, compact footprint, and reliable continuous operation are critical. The equipment adopts high-grade materials and reinforced structural design to ensure durability and corrosion resistance in marine environments.

 

Each centrifuge package is delivered as a complete and integrated unit. The scope of supply includes the high-speed decanter centrifuge, a matched feeding pump, a small holding tank, and an integrated control panel. This skid-mounted and modular design allows for easier installation, commissioning, and operation on offshore platforms or drilling vessels, where space is limited and installation time is critical.

The integrated control panel enables centralized monitoring and control of the centrifuge system, improving operational safety and efficiency. All electrical and control components are selected to comply with offshore standards and are properly protected to ensure stable operation under demanding conditions.

By delivering these 16 complete centrifuge packages, GN Solids Control once again demonstrates its strong manufacturing capability, strict quality control system, and commitment to providing reliable solids control solutions for offshore drilling operations worldwide.

GN Decanter Centrifuge and Cuttings Dryer for Africa Drilling Company

Vertical cuttings dryers and decanter centrifuges are core processing equipment used downstream of the drilling mud solids control system. After the shale shakers, desanders, desilters, and mud cleaners separate the coarse and medium solids from the drilling fluid, a significant amount of fine solids and liquid remains trapped in the drill cuttings. To meet environmental regulations, reduce drilling waste volume, and recover valuable drilling fluid, further treatment of these drill cuttings is required. Vertical cuttings dryers, together with high-speed and low-speed decanter centrifuges, play a critical role in achieving this objective.

The vertical cuttings dryer is primarily designed to treat drill cuttings discharged from shale shakers when drilling with oil-based or synthetic-based mud. By utilizing high-speed centrifugal force, the dryer effectively removes residual liquid from the cuttings, significantly reducing oil-on-cuttings (OOC) and producing drier solids suitable for disposal or further handling.

Meanwhile, decanter centrifuges are used to process the liquid phase recovered from the dryer, as well as overflow from the solids control system, enabling fine solids separation and efficient recovery of drilling fluids. High-speed centrifuges focus on ultra-fine solids removal, while low-speed centrifuges are applied for barite recovery and density control, ensuring optimal mud performance and cost efficiency.

GN Solids Control offers a complete range of high-quality vertical cuttings dryers and decanter centrifuges designed to meet the diverse technical, operational, and regulatory requirements of different markets worldwide. The equipment is engineered with robust mechanical design, wear-resistant materials, and reliable control systems to ensure stable operation in harsh drilling environments.

Recently, GN Solids Control successfully delivered one (1) vertical cuttings dryer model GNCD930G and two (2) variable-speed decanter centrifuges model GNLW363D-VFD to an African drilling company. The decanter centrifuges are equipped with electrical variable frequency drives (VFD), allowing precise adjustment of bowl speed and conveyor differential speed. This flexibility enables the centrifuges to adapt to various applications, including fine solids removal, barite recovery, and fluid clarification, under different mud types and operating conditions. The supplied system provides efficient cuttings treatment, reduced environmental impact, and improved overall drilling fluid management for the project.