The feature and structure of KOSUN drilling decanter centrifuge

Decanter centrifuge is used frequently to remove solids in oilfield drilling operation to achieve drilling fluids purification. Decanter centrifuge,also called horizontal screw discharge sedimentation centrifuge, is a special solids control equipment to conduct solid-liquid separation. It can accomplish each procedure of feed, centrifugal sedimentation, unloading, etc. Usually at least 2 sets decanter centrifuge should be used for 1 drilling rig.

The first decanter centrifuge with middle speed was acted as the fourth phase solids control equipment. It is used for recovery barite which is an expensive material for drilling mud. A decanter centrifuge with good barite recovery can help to reduce drilling cost and increase drilling efficiency.

The second generation of decanter centrifuge will be used for the treatment of the drilling cuttings. Usually,it is used downstream from vertical cuttings dryer,while after high G shaker,For WBM. It is used to cover useful drilling mud from drilling cuttings.

The feature and structure of KOSUN drilling mud decanter centrifuge

It is mainly made from SS321 or SS316L,SS316 material. It contains a spiral propeller, whose blades are welded with wear-resisting tungsten carbide for effective extension of propeller’s lifespan. Its inwall consists of wear-resisting antiskid ribs to both protect rotary drum and increase discharging efficiency. The slag hole at its narrow end is coupled with outlet sleeves made from YG wear-resisting materials. On the surface of the narrow end are matched with several changeable and wearable liquid level board used to adjust the depth of liquid level.

We mainly purchase nation-renowned explosion-proof electric motors due to their ability to effectively ensure the power supply to drilling equipment, stability and safety.

It has a gear reducing structure. Its shell is connected to rotary drum. Its input shaft is linked to auxiliary electric motor via belt-pulley. When they work together, they will generate differential rotational speed to the propeller inside drum. Differential gear is the key part in centrifuge, primarily used for supply of large torque and constant differential rotational speed . Its three drive structures are planetary gear, cycloid pin gear and hydraulic gear.

Its outer shell is explosion-proof, adopting welded steel plate structure made up of socket and control chamber. Master electric motor cabinet contains such original parts as AC contactor and thermal relay so that the motor will be protected to the greatest degree once emergency occurs. Besides, we also provides explosion-proof frequency conversion control tank.

It is a flexible hydraulic rotating device connected to master electric motor which thereby can start no-load centrifuge to reduce the starting current and protect the motor. If the load is too much, oil temperature inside will rise quickly above 120 degrees centigrade, oil will erupt via fusible plug, then the drive will be stopped and the motor and other components will be prevented from damage.

As a significant oil field solids control equipment, decanter centrifuge consists of a conical, horizontal steel bowl that rotates at high speed using a double screw type conveyor. The conveyor rotates in the same direction as the outer bowl but at a slightly slower speed.It is mainly used for recycling barite, eliminating small solid, reducing the solid content of drilling fluid, controlling the density and viscosity of drilling fluid, ensuring the performance of drilling fluid, and play an important role in drilling fluid circulation system.

The main decanter centrifuge supplier in China

KOSUN is the forerunner of decanter centrifuge in China, who supplies various specifications of decanter centrifuge, including high-speed decanter centrifuge, low-speed decanter centrifuge. The equipment can be customized in compliance with requirements from the clients, including other solids control equipment, like oilfield shale shaker, desander, desilter, centrifugal pump, mud agitator, etc.

what’s more, KOSUN will provides your perfect technical support and service,KOSUN will provide a suitable and reasonable solutions on equipment design and purchase to its customers based on their actual requirements and field situations before they buy and then begin to manufacture accordingly.

KOSUN engineers will accompany the customers to examine equipment and help draft construction scheme and detailed procedures.

KOSUN will dispatch technicians to offer guidance on equipment assembly, adjustment and training for operators when equipment arrive. And they will also be responsible for maintenance and reparation within the first 18 months of the equipment application.