May 25

Decanter centrifuge is one of the equipment in solids control system on oil field. It consists of a conveying screw inside a rotating bowl By exerting increased G-force on the drilling fluid, the particles are accelerated and settle on the outside of the bowl The free liquid pool is removed and the solids are pushed away and discharged from the bowl. It have several functions

Dewatering By Centrifuge

For unweighted drilling fluid, the centrifuge use appears cost justified when the drilling fluid and fluid disposal costs increase. This is based solely on the economics of dewatering hydrocyclone underflow. As fluid costs increase, centrifuge use is highly recommended for reducing costs. Greater portions of the circulating flow should be processed. The improved separation efficiency that can be derived from wider use of centrifuges is recommended for reducing drilling wastes.

Drilled Solids Removal By Centrifuge

To minimise the dilution rate in an unweighted mud, the centrifuge is cost effective operating on the active mud system. With solids content less than 10%, a centrifuge can operate at high speeds, thus removing a larger volume of the clay size solids. In some cases, this process can be enhanced with the use of a polymer flocculation system.

Control Of Mud Properties By Centrifuge

To minimise drilling waste on weighted muds (oil/water) two stage centrifuging is viable provided the centrifuges are properly chosen and adjusted. The first centrifuge should be adjusted for solids recovery, with the second centrifuge providing maximum liquid-solids separation. This process also can be enhanced by using a polymer flocculation system on the water base muds only.

Decanter centrifuge is very important on oil field drilling industry with the above functions, Please contact GN Solids for inquiry freely

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written by GN Shale Shaker \\ tags: , ,


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