drilling

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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.  

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.

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For normal design shale shaker, the clean
fluids discharged from the bottom of shale shaker. Fluids side discharge shale
shaker is a kind of shale shaker that the clean fluids after separation will be
discharged from both side of the shale shaker. It is widely used in many
countries, like Iran, UAE, Nigeria, Brazil, Argentina, etc…

Features of Fluids side discharge shale
shaker

For normal shale shaker, the fluids can only
be discharged to the tank under the shale shaker. Customs should use pump if
they want to transfer mud from shaker tank to other tanks. In case there are
heavy mud settle at the tank bottom, the shaker should be stop for tank
cleaning.

With side discharge shale shaker, the fluids
can be discharged from both side of the shaker deck, jobsite people can use
trough to lead the fluids to other tanks or other place, no need extra pump.

why need Fluids side discharge shale shaker

For example, during well cementation jobs,
operators will inject cement to the rig hole to reinforce the well wall, new
drilling fluids in need in this process, but there are still drilling fluids in
the well hole. With Fluids side discharge shale shaker, fluids from shaker can
be leaded to other place or other systems for treatment, rather than fall down
to the shaker tank.  

Other solids control equipment used together
with Fluids side discharge shale shaker

Desander & Desilter mud cleaner: Shale
shaker is the 1rst stage solids control equipment. After shale shaker, the
fluids will be transfer to desander or desilter separation by centrifugal pump.

Barite recovery decanter centrifuge: it is
the application of middle speed decanter centrifuge to recovery barite from
solids control system, and the recovered barite can be reused in the system.

Jet mud mixing system: it is used to mixing
new drilling mud. And barite recovered from decanter centrifuge also added to
the hopper of jet mud mixer and come to the system again.

Pumps: Different feeding pumps for desander,
desilter and decanter centrifugal, mixing pump, trip pump, charging pump, etc…

500bbls tanks is a common size mud tank for oil and gas drilling rigs. I can be used for mud mixing or mud storage. For HDD or CBM drilling, they normally do not use such big size mud tank.

Below is the parameters of GN design 500bbl mud storage tank, it is rectangular Mud Tank built as per API specification Schedule 40:

Mud tank usable capacity: 500 bbls approx.

Compartment quantity: the 500bbls mud tank can be divided into 1~3 compartments (Depends on customer request.). Capacity of each compartment: 250 bbls approx.

Mud tank dimension W x H x L: 13500×3000 x2650mm Or customized dimension.  

Electrical mud agitator model GNJBQ150-DD, with 36" impeller, 2-layer impeller. 20 HP driving motor, 460V – 60 HZ, RPM 1750 or 380V – 50 HZ, RPM 1450. 

Electrical mud agitator quantity – 2~4 each, with 2~4 each mud gun

Sufficient agitation to mix up 17 ppg mud. Bottom mud guns installed quantity – 4 each. Bottom mud guns installed size 2 in, model GNNJQ50A-3G, 3-nozzle mud gun.  

6" suction and 4" discharge line on either end of the tank with female cam lock connection to other tanks.  4" drain line with butterfly valve – 2, 8" Equalizing valve between compartments- qty 2~3. Depends on compartment quantity.

Cover with Grating top, collapsible hand rails surrounding, dual access- escape ladder

Skid: It is skid Mounted 3 runner oilfield skid mud tank with V crimp walls, it is easy for oilfield movement.

Other advantages of 500bbl mud storage tank for oil and gas drilling

1. Sand Blast Treatment before painting.

2. External paint and internal coating

3. Bottom painting for anticorrosive: Two pack Epoxy zinc, thickness 75 μ

4. Middle painting: Two Pack Epoxy hi-build containing anticorrosive pigmentstwice, thickness 250 μ

5. Surface painting: Surface pigmented with high quality light fast PU pigments, thickness 70 μ

6. Standard: API&ISO Certified Manufacturer