GN Solids Control is a Chinese company that has established itself as a global leader in the design, manufacturing, and service of equipment for solids control, drilling fluid purification, and drilling waste management.
This compact system for offshore platform mainly consists of 2 parts.
- Mud Tank
- Desilter
GN would design and build a Customized, Skid-Mounted Solids Control System that is pre-assembled and tested onshore for easy installation offshore.
1. Design and Layout
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Compact & Modular Design: GN uses 3D modeling to create a space-efficient layout that fits the platform’s specific footprint. The system is often built into multiple, interconnecting skids.
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Baffle System: Internal baffles are crucial offshore to dampen fluid surge (sloshing) caused by the vessel’s motion. This maintains stability and ensures consistent suction for the pumps.
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High-Efficiency Layout: The tank is divided into specific compartments that form a logical flow path for the drilling fluid:
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Possum Belly / Shale Shaker Back Tank: Receives fluid directly from the flow line.
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Settling Compartments: Allows for initial gravity separation.
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Suction Compartments: Where the mud pumps draw clean fluid from.
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Additive & Mixing Compartments: For treating and weighting up the fluid.
GN Solids Control Desilters for Offshore Platforms
GN offers robust desilter units specifically engineered for the harsh conditions of offshore operations. Key models often include the GNZJ Series.Key Components of a GN Offshore Desilter Unit:
Hydrocyclones (The Core Component):Size: GN desilters typically use 4-inch or 5-inch hydrocyclones. A 4-inch cone is standard for fine silt removal.
Lining: For offshore durability, the cones are often lined with polyurethane or other abrasion-resistant materials to withstand the constant erosion from fine, abrasive solids.
Arrangement: Multiple cones (e.g., 8, 10, 12, or 16 per unit) are mounted on a single manifold to handle the high flow rates common in offshore drilling.
Skid-Mounted & Compact Design:
Offshore space is at a premium. GN designs its desilter units to be compact, modular, and skid-mounted for easy installation, integration, and movement on the rig.
The unit is pre-assembled and tested onshore to minimize commissioning time offshore.
Feed Pump:
A dedicated, high-head centrifugal pump (often a GN brand pump) supplies pressurized drilling fluid to the hydrocyclone manifold. Proper pressure (typically ~75 psi / 0.52 MPa at the inlet) is critical for efficient separation.
Shaker Deck (Integrated Mud Cleaner Option):
Often, the desilter unit is mounted over a fine-mesh screen shale shaker. This combination is called a Mud Cleaner.
The shaker processes the “underflow” (the waste slurry of fine solids and a small amount of liquid) from the hydrocyclones. This allows for the recovery of valuable liquid phase back into the active system, which is especially important with expensive oil-based or synthetic-based muds used offshore.
For more case info, please find Michael.
- Whatsapp: + 86 178 0179 9913
- Email: michael@gnseparation.com/michael@gnsolidscontrol.com
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