Introduction
In the realm of oilfield drilling, solids control equipment is of utmost significance as it enhances drilling efficiency, cuts costs, and benefits the environment. Today, we present a solids control decanter centrifuge unit, equipped with a centrifuge, lifting frame, screw pump, and other auxiliary devices, that has been supplied to a European drilling company.
Compact Structure of Centrifuge Unit
GNLW Series Decanter Centrifuge
The GNLW series decanter centrifuge stands as an effective solid-liquid separation tool. It excels in performing feeding, centrifugal sedimentation, and unloading processes at top speeds, making it indispensable for applications such as barite recovery, fine solid removal, drilling fluid solid content reduction, drilling fluid density and viscosity control, drilling fluid performance assurance, and accelerated drilling.
Working Principle
The operational principle of the GNLW series decanter centrifuge revolves around centrifugal sedimentation for separating drilling suspensions. The suspension is introduced into the rotating drum through the feed pipe, specifically via the liquid outlet holes in the spiral pusher. Here, under the intense centrifugal force, solid particles are pressed against the drum’s inner wall. These particles are then propelled towards the solids discharge port located at the drum’s smaller end by the spiral pusher’s blades. Simultaneously, the liquid phase flows out through the overflow holes situated at the drum’s larger end.
Model and Performance
The customer has opted for the GNLW453DVFD model decanter centrifuge, featuring a drum diameter of 450mm and a drum length of 1540mm. This model boasts a processing capacity of up to 264GPM (60m³/h) and is capable of separating particles sized between 2~5µm.
The screw pump is preferred due to its minimal attachments, compact structure, small footprint, and ease of maintenance. The pump’s rotor and stator are the wearable components, designed for simple replacement. Notably, the stator is crafted from artificial rubber, granting it a unique edge in transporting high-viscosity and tough suspended waste slurry compared to alternative pumps.