Horizontal spiral type decanter centrifuge for drilling mud solids control system in oilfield

Decanter centrifuge is the final processing units in the arrangement of solids control equipment. It could be used to process unweighted and weighted, 

water-based and oil-based drilling fluids (muds).

On oilfield, middle speed centrifuge is used to recycle the the barite and bentonite in solids control system, high speed decanter centrifuge could 

separate the fine solids in drilling mud after the desilter unit. Meanwhile, high speed centrifuge centrifuge is always applied in drilling waste 

management to recover the valuable drilling fluids. Typically, oilfield decanting centrifuge is preceded by gas busters, gumbo removal equipment 

(if utilized), shale shakers, mud Cleaners (if utilized), Vacuum degassers and hyrdocyclones.

Decanter Centrifuge is the last stage equipment in drilling mud system for solids control and mud cleaning. The superiority of Decanting Centrifuge 

is embodied in the solids processing size. Decanter Centrifuge could remove the solid particles with size 2-7 microns using the principle of 

centrifugal action, it is an ideal choice for separating particles in drilling mud. Always there is a screw pump or submersible pump to feed the mud 

to Decanter Centrifuge. After the drilling fluids being fed into the centrifuge drum, under the function of centrifugal force, solid phase particles are 

pushed to the internal wall of the drum, then to the solid discharge export of the small end of the drum and excreted. While the fluids is excreted 

from the overflow hole of the large end. Such cycle is to achieve the purpose of continuous separation. High speed decanting centrifuge are more 

effective for separation of fine solids.

Drawing:

Technical data:

Max. capacity: 9m3/hr, 45m3/hr, 57m3/hr, 80m3/hr, 114m3/hr

Effective capacity: 6m3/hr, 30m3/hr, 40m3/hr, 60m3/hr, 90m3/hr

Separation point: 2~5um, 5~7um

Application field:

Oil well drilling: It is used to separate 2-5 μm and 5-7 μm solid particles in the drilling fluid, balance the viscosity and specific gravity of the drilling fluid, recover barite powder, and ensure the lifespan of the drill bit and drilling tools.

Coalbed methane/sale gas drilling: By separating ultra-fine solid particles (above 2μm), this technology solves the problem that the vortex device cannot handle, and optimizes the performance of the drilling fluid. 

Environmental-friendly treatment of waste slurry: Recovering the solid particles in the slurry, reducing the processing cost, and meeting environmental protection requirements.