dewatering

Drilling waste decanter centrifuge can be used together with Chemical enhance dewatering unit. We call it dewatering unit. The total system is normally put in a 20ft container or a 40ft container, per customers’ request.

Chemical enhance dewatering unit, frankly speaking, it is a mixing system for chemicals. Chemical can be mixing and storage in the system per the set conditions. And then the qualified chemicals can be transferred to decanter centrifuge feeding pipe and mixed with mud before center into centrifuge for treatment.

Some customer is wondering: the decanter centrifuge is used to separate the fine solids from drilling mud, why chemical enhance dewatering unit is need together? And in which condition, the chemical enhance dewatering unit is needed?
The reason is that, decanter centrifuge is a kind of physical separation. It applies high G force and the differential speed to separate fine solids above 2 ~ 5 microns from drilling mud. For the even more fine solids smaller than 2 ~ 5 microns, decanter centrifuge is not worktable. They will be left in the fluids after separation. If customer want to separate this part of the ultra fine solids and get more pure water, chemical treatment is requested.    
The function of the chemical enhance is to make the fine solids in a bigger size, in this case, decanter centrifuge can treat it.

Then customer have another question, how they get the chemicals? How should they know which kind of chemicals should be add? How much should be add? How long time should be wait? How long time for mixing with drilling mud? If they buy centrifuge dewatering unit from GN Solids Control, can GN company offer chemicals to them? …
Answers as below: The centrifuge manufacturer or dewatering unit manufacturer, they normally only make the machine, they do not supplier chemicals. There are chemical company for all the jobs. What you should do then is to find a reliable chemical supplier, send them samples of your materials, and tell them result you want to get, the chemical engineer will test and offer you the suitable chemicals and instruct you how to use it.

Applications of dewatering unit
1) Dewatering unit is an important part for waste water treatment.
2) Combined with high speed or super high speed decanter centrifuge, dewatering unit is widely used for water base mud drilling cuttings treatment.
3) Dewatering unit can be used in TBM (Tunnel Boring Machine) drilling mud system
4) Dewatering unit can be used in dredging slurry separation system in civil projects. In this case, it is used together with belt compressor.

Flocculants is the most important part to effect dewatering unit performance. In order to insure a better performance of dewatering unit, we should pay attention on below points:
(1) If the surface of the flocculants powder is dissolved too rapidly, there will be particle mutually attached, therefore it will cause the particle interior does not be dissolved completely; the usual operation is to use various types of dispersing and dissolving device.
(2) Per different conditions, the time used to dissolve the flocculants varies. The main factors may as below:
A. The types of flocculants be used;
B. The water quality used as dissolution;
C. The temperature of water
D. The mixing efficiency.
Normally, its takes around 1hour for flocculants powder to be fully dissolved. If the flocculants cannot be mixing completely, it will reduce the performance.

Dewatering unit Design in drilling waste management field
Dewatering unit is usually put into container. GN Solids Control company offers 20ft containerized dewatering unit and 40ft containerized dewatering unit.
Dewater centrifuge for dewatering unit can be put into the container, inside the container or even on the top of container.

When dewatering unit is used together with decanter centrifuge. It should pay attention to that: the chemicals should add on centrifuge feeding pump outlet pipe, and before enter into centrifuge. The mud cannot be mixed with chemicals and then transfer to centrifuge. Pls refer our former mail for dewatering unit pipeline.

A customer contact GN with their inquire that, they want to carry out the reclamation (Treatment and disposal) of the drilling cutting waste which collected and storage in the lined pit by utilizing the routine process as well as this process shall be proceeded when the drilling operation is finalized and the rig moved to other location. Therefore, by researching and studying, they have find out new methodology of treatment and disposal these waste by new technology that was utilized in various global oil and gas industries, instead of the old treatment and disposal process.  

The customer would like to get and utilize this Drilling waste management unit for carrying out the treatment and disposal process of the collected drilling cutting waste in the lined pit. They want to know, if there is available alternative equipment (Unit) in our firm or if GN-Solid Control  Company can provide such equipment (Unit).

Yes, indeed, GN Solids Control cpmpany is the only 1 API manufacturer who is responsible for solids control system, as well as big bowl centrifuge, vertical cuttings dryer, screw conveyor, dewatering unit for drilling waste cuttings management. GN system is used used to recover oil and drilling fluids and reduce the cost.

GN hot sale unit for drilling cuttings waste management:

1-       Augers (or Conveyors): to convey cuttings from shakers and other solid control equipment to Cuttings Dryer.

2-      Cuttings Dryer: to remove excess mud from cuttings.

3-      Fixation Equipment: which is consist of a Mixer and cement Silo and related augers and containers.

4-      Flocculation unit: to flocculate waste water or dumped mud prior to centrifuge.

5-      GBD low speed centrifuge to finalize dewatering process.

If you need more information of GN drilling waste management system, contact GN group.

GNLW363 centrifuge is widely choosed for dewatering unit. GNLW363 centrifuge, with Derrick DE-1000 centrifuge and Swaco 518 centrifuge, they are the most hot sale model worldwide.

GNLW363 dewatering centrifuge is with bowl size 14 inch. And with bowl length 50 inch. It is the most popular size centrifuge model.

Derrick and Swaco dewatering unit sometime put the centrifuge in the same container of the dewatering unit. While GN Solids Control recommend to put the centrifuge outside the dewatering unit, for easy maintenance and operation.

GN Solids Control manufactures customized dewatering units.

GN design dewatering unit is complete containerized unit with various pump and decanter centrifuges.

20’ Containerized Dewatering Unit is a smaller size dewatering unit, GN have big size 40ft for option.

GN provide optimum performance when combined with GN proprietary dewatering centrifuge. with PLC control. It is easy for operation and reliable for running.

GN 20’ mobile dewatering unit can be transported as a standard container for overseas and land shipping. The system includes all the standard dewatering components with the centrifuge mounted on a separate telescoping skid or on your own mud tank.