Solids control equipment plays a critical role in oilfield drilling operations, enhancing drilling efficiency, reducing costs, and contributing significantly to environmental protection efforts. Today, we are showcasing a solids control decanter centrifuge unit sold to a European drilling company. The system includes a decanter centrifuge, a lifting frame for the centrifuge, a screw pump, and other supporting components.
GNLW Series decanter centrifuge
The GNLW series decanter centrifuge is a highly efficient solid-liquid separation device. It seamlessly handles feeding, centrifugal sedimentation, and discharge operations at full speed. This capability is essential for recovering barite, removing fine solids, reducing drilling fluid solid content, managing the density and viscosity of drilling fluid, maintaining its performance, and ensuring efficient drilling operations.
Working Principle
The GNLW series decanter centrifuge operates based on the principle of centrifugal sedimentation to separate drilling suspensions. The suspension enters the rotating drum through a feed pipe and is distributed via liquid outlet holes on the spiral pusher. Centrifugal force pushes solid particles against the drum’s inner wall, and the blades on the spiral pusher transport them to the solids discharge port at the drum’s narrow end. Meanwhile, the liquid phase exits through overflow holes at the drum’s larger end.
Model and Performance
The customer selected the GNLW453DVFD model decanter centrifuge. This unit features a drum with a 450 mm diameter and a 1540 mm length. It delivers a processing capacity of up to 264 GPM (60 m³/h) and achieves particle size separation within the range of 2–5 µm.
Centrifuge Frame
The centrifuge frame is designed to optimize space utilization and enhance production efficiency. It ensures stable centrifuge operation while providing a compact and organized layout for the entire solids control system.
Screw Pump
The screw pump stands out for its simple structure, minimal attachments, small size, and ease of maintenance. Its wear parts, the rotor and stator, are straightforward to replace. The stator is crafted from synthetic rubber, making it particularly effective for transporting high-viscosity and abrasive waste slurry compared to alternative pump types.