mud

The drilling mud decanter centrifuge driven
by VFD will give many benefits to the clients. The adjustable bowl speed and differential
speed allows the operators to set the right G force and solids pushing speed
according to the drilling mud conditions.

To design the VFD Control Panel, the
contractor needs the power supply specifications. Normally it is 460V/60HZ for
USA standard or 380V/50HZ for Europe and China standard. Than the pulley size
of the motor and bowl side will decide the bowl driving speed at different
frequency. After confirming the bowl speed formula, the contractor needs the
formula for calculation of the differential speed. For GN Decanter centrifuge,
the Sun-Wheel gear box ration is 57:1. So the differential speed will be the
bowl speed minus the gearbox input speed and divided by 57.

For the VFD Control panel, there is
different explosion proof standard. In China, it is CN Explosion proof which is
close to IEC Ex standard. In Europe, it is ATEX Explosion proof. And in North
America, the explosion proof standard is UL for USA, and CSA for Canada.

GN Pressurized VFD Decanter Centrifuge control
panel is specially design for Zone 1 or Zone 2 standard with ABB VFD and
stainless steel cabinet. The PLC smart control allows the user to operate the
drilling mud decanter centrifuge by HMI screen.

GN VFD decanter centrifuge has been
exported to over 30 countries and regions, GN Solids Control VFD decanter
centrifuge is available in different sizes including: GNLW223C-VFD (9inch)
bowl, GNLW363C-VFD(14inch bowl), GNLW453C-VFD (18inch bowl), and the big bowl
big volume centrifuge with 22inch bowl and model is GNLW553C-VFD.

To support the worldwide operators, GN
Solid Control keep expanding our branches, now , GN service and support are
available from Beijing, China, Houston, USA, and Russia. Some other areas are
covered by GN local partners who are the professional solids control service
companies.

With more and more cooperation between
China government and Russia Government, there also more and more cooperation
between China companies and Russia companies. As China leading manufactures in
China, GN Solids Control Ltd have more and more development in Russia.

Now the world economic environment is not
good, industry companies becomes more and more difficult under this conditions.
Many companies, even many big and famous companies and cannot survive at the
bad condition. But GN Solids Control can keep improving and developing. With
the advanced design equipment, reliable and fast services, and international
services net, GN Solids Control get more and more marketing share from the
international market.  

Recently, 4 sets solids control shale
shaker
as well as 4 sets solids control mud cleaner dispatched to the port for
Russia clients.

It is not the first time the clients buy
from GN Solids Control Company. But GN Solids Control is the first suppliers
for this client from China. Before buy the solids control equipment from China,
the clients only buy big equipment from America and European.

Why the client finally decided to buy from
GN Solids Control

1) GN Solids Control is China leading
manufacturer for mud solids control and drilling waste treatment system

2) GN Solids Control is China leading
company for drilling waste treatment system. GN engineering group have good
expericent on the drilling waste management field

3) GN Solids Control prompt response to
clients. The client oriented services.

4) Advanced and user friendly design on the
solids control and drilling waste treatment systems.

5) Cost-effective price. GN only make top
quality products and offered with reasonable price. Clients will follow GN after the first
deal, they will give repeat orders and recommend new customers to GN Solids
Control company.

6) One top service and turn key solution:
from solids control linermotion shale shaker, mud cleaner, desander, desilter,
mud mixing system, variable pumps, mud agitators, mud guns, mud tanks,
electrical control systems, decanter centrifuge, vertical cuttings dryer…

500GPM is the most popular capacity mud system for HDD, CBM and other trenchless activities. GN Solids Control dispatched a 500GPM mud system to clients.
Firstly, remove the shaker box locking device of shale shaker GNZS703E-HB and mud cleaner GNZJ703E-D8N (Please refer shaker user manual and mud cleaner user manual for detailed operation). Then have a trial operation to shale shaker and mud cleaner.
All valves for pipelines are on off state after dispatch from the manufacturer’s factory. Before start up the system, operator should open values first and ensure all of them unblocked.

Then, start up shale shaker GNZS703E-HB and mud cleaner GNZJ703E-D8N. After the shaker and mud cleaner is running stably, start up submersible slurry pump to feed for the shale shaker. It is the first stage separation. When the mud reaches to three quarters of the 1# compartment underneath shale shaker (about 1 minute), start up the desilter feeding pump (1# sand pump GNSB6x5A-12J). Mud will be transferred to the mud cleaner 4’’ desilter cyclone from the 1﹟compartment, at a pressure of 0.25~0.40MPa. It is the
second stage separation. The clean mud from 4’’ desilter cone flow to the #2 compartment. When the mud height reaches to the overflow pipeline, it will overflow to #3 compartment. The user-owned mud pump is connected to the suction line of the 500GPM mud system tank and transfer qualified mud to wellhead. The clean mud can also directly flow to outside storage tank through the desilter output pipe.
When needed, users can start up the mixing pump (2# sand pump GNSB6x5A-12J) and feed to the mixing hopper GNSLS35A. The weighted mud from mixing hopper flows to 3# compartment. The suction port and discharge port of mixing pump are equipped with T-pipe, it can also mixing/discharge mud from/to outside tanks.  
Pay attention to the performance of the desilter cyclone. Ensure it works properly. If not, adjust the cyclone adjustment cap for a better performance. Pay attention to the figures on the pressure gauge of desilter cyclone, ensure it is under the scope of the working pressure. The working pressure of 4’’ desilter cyclone is 0.25~0.40MPa.

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Oilfield screen shaker separator normally called oilfield shale shaker or screen separator. It is the first step solids control equipment used in oil field and other drilling activities. It is the necessary solids control equipment for mud systems, no matter for oil and gas drilling, HDD, CBM, TBM, or piling.

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Per the motion type of screen shaker separator, there are linear motion screen shaker separator and balance elliptical motion screen shaker separator.  
Oilfield screen shaker separator is normally linear motion type. And linear motion screen shaker separator is the most popular and long history type. Linear motion is more reliable. It can suits more kinds of jobsite condition.
While Balance elliptical screen shaker separator is very limited with jobsite and mud condition. When there are big load of mud, or the mud fall onto screen shaker deck unequally, the motion will be damaged and the BEM shaker cannot be working well. Mud will be over flow.

Per shaker deck quantity, there are single deck screen shaker separator and double deck screen shaker separator. Double deck screen shaker separator can be used for scalping shaker separator. The top deck use coarse mesh screen for pre-separation, while the bottom deck use normal mesh wire screen per jobsite condition.

Per the difference of applications and G force, screen shaker separator can be divided into solids control screen shaker separator and drilling waste management high G screen shaker separator. Beside the application G force is different, for solids control screen shaker separator and drilling waste high G force screen shaker separator, the feeding type of the 2 screen shaker separator is also different.
Solids control screen shaker separator is normally use top type or back type weir feeder, or box feeder, while drilling waste screen shaker separator is use hopper feeding.
Solids Control screen shaker separator can be fed by slurry pump or fed directly from the rig manifold under gravity. While drilling waste screen shaker separator can be fed by screw conveyer or cuttings transfer pump.  

GN Solids America, it is the branch company of GN Solids Control Company Limited. It is located in Houston Texas. With its own office building and warehouse.

GN Solids Control and GN Solids America took part in 2015 OTC oil show with great success. The head company GN Solids Control takes its latest design drilling waste management equipment (high speed decanter centrifuge, vertical cuttings dryer) for the show. And GN Solids America show the mud cleaner separator machine for the OTC oil show. Mud cleaner is a 3-in-1 machine, with the function of desander, desilter, and a under flow shale shaker.

GN solids control mud cleaner for oil and gas drilling showing on OTC
1) Mud cleaner model: GNZJ594E-2S12N
It is the combination of under flow shale shaker GNZS594E, a 2-cone desander, and 12-cone desilter.
2) Capacity of the mud cleaner: 240m3/h (max.)
The capacity of mud cleaner depends on the desander cone and desilter cone capacity. The smaller one is the treating capacity of the whole treating capacity.
Desander cone and desilter cone is on D100 separation machine. There will be some amount of useful mud discharged together with dirty mud. So the function of underflow shale shaker is to further treat and recovery mud and dry the solids discharge.
Some jobsite may use desander or desilter with not under flow shale shaker to save cost. But the performance is surely not as good as the combined one.
3) Feeding pipe size of the mud cleaner is 6’’ and the output size if 8’’. GNSB8*6 centrifugal pump is mostly used to feeding for the desander and desilter.
4) Shaker screen of the GNZJ594E-2S12N mud cleaner: the under flow shale shaker is a 4-panel shaker with long shaker deck. It can make the solids more dryer. The shaker screen is pretention type, and mounted with wedge for fast screen changing.
5) GN patent design for Synchronous adjusting of the deck angle. When the operator adjust shaker angle at any side, both sides will be up or down with exactly the same angle. It saves time of jobsite people and easy for operation.