Shale shaker is the traditional process for the drilling mud recycling and separation. And the shale shaker is also the most popular processing equipment to treat drilling fluids. It utilizes shale shaker screens with different screen opening to remove cuttings and sand. The unusable cuttings and sands bigger than the screen opening cannot go pass the screen and will be discharged from the shale shaker separator, while the usable drilling fluids smaller than screen opening will go pass the screens and falls down to the holding tank under the shale shaker.

Dual tendam shaker

Most people may be not familiar with the Mud Cube technology, which is a technology developed by some company. Mud Cube technology is intended to replaces conventional shale shakers. There seems to be interest in the technology in many countries. The Mud Cube technology has its advantages. It can suit for some kind of drilling mud, but not suit for all kinds of drilling mud. And the cost and maintenance cost of mud cube is very high as the reason of its complicated design.

ViST Vacuum screen is developed by GN Solids Control. It is a vacuum screening unit using vacuum to recover usable drilling mud. It is not to replace traditional shale shaker. It is designed to use together with traditional shale shaker. There will be a holding hopper underneath the shaker screens of the shale shaker, and suction the usable drilling fluids with the vacuum power.

As shale shaker is still the most popular and cost effective solution, there are many popular brand for shale shakers, like Derrick, Swaco, Brandt, Fluids System, Elgin, GN Solids Control. And there are many different designs of shale shaker to suit for different applications. According to the screen Quantity, there are 2-panel shale shaker, 3-panel shale shaker, 4-panel shaker. According to the shale shaker quantity, there are single deck shale shaker, double deck shale shaker and 3 deck shale shaker. 3-panel and 4-panel single deck shale shaker is the most popular application.

GN Solids Control makes high quality composite material replacement screens for most of the popular shaker models.
Compared with the traditional metal frame screen and the dip process, composite material shaker screens are with more advantages. Its lifetime is more than double, and the manufacturing process is more environment friendly. The metal frame shaker screen and the dip process shaker screen can only stock for 1 year or max. 2 years. They are easy to become aged. But the composite material are made from fiber glass plastic, which can last for long time, the composite screen can be stocked for 5 years, and the plastic material can be recycled.

Besides above advantages, GN Solids Control offers rubber sealing plugs to repair the composite material shaker screens. In many cases, there is only small area wire mesh broken, but the screen frame and most areas are in good condition, after repairing the screen with GN rubber sealing plug, the screen can last another some days.
Below is the procedures of how to repair screens with GN rubber sealing plugs.
Step 1: Cut the broken mesh square hole by knife, ensure the cut edge to be flat and smooth, the hole edge mesh burr should be no longer than 1.5mm.
Step 2: Install Rubber sealing plug as show as the photo, from screen front side to bottom side. Use hammer carefully to make sure the rubber plug insert into the screen hole completely, but not damage the screen wire mesh.
Step 3: Plug top surface should not higher than screen surface. When the rubber plus inserts to the screen frame properly, it should be 1 ~ 2 mm lower than the screen wire mesh surface.
As the screen frame designs are different, some screen models may have more than 1 kind of rubber plug. Below is the rubber plug quantity for most of the popular shale shaker screen models from GN Solids Control:
1.1 Only request 1 kind plug screen model：T585、TMD3、BVS1、BVS2
1.2 Need 2 kinds of plug screen model：B380、B635、F737、G70F、G70E、G70D、G75F、G75E、G75D
Example:
As show as below photo, hole A an hole B are for the same screen model, but with different dimension. Choose the right size plug to repair screens.

Recently, a client contacted GN Solids Control to inquire for a Fixation compact unit on the trailer. The client want the Cutting treatment plant to be a Mobile Solidification Unit. The Mobile Solidification Unit will content 2 modulars:

The client want the first modular includes following:
1) 1 set flat tank with 1 set agitator and 1 ea mud gun.
2) 1 slurry centrifugal pump to circulate on closed loop
3) 1 shale shaker on top of the tank to remove solids

Automatic Drilling Cuttings Solidification Unit for CNPC Project

The client want the second modular includes following items:
1) The shale shaker from the first modular will discharge solids into the second compartment.
2) 2 boxes (1 for cement and 1 for lime storage) dropping mix into one compartment for solidification
Based on clients request, GN Solids Control recommended below items and equipment

For skid #1 GN Solids Control recommends:
1) 1 ea slurry tank 15m³, dimension can be 5×2.2×2.15m. In this case, the tank can be put into container for international shipment.
2) 1 ea 4-panel shale shaker model GNZS594F-SHBF (http://www.gnsolidscontrol.com/shale-shaker)
3) 1 ea 11kw (15hp) mud agitator, model GNJBQ110-DD, with double payer impellers and tank stabilizer at tank bottom.
4) GN Solids Control company does not recommend mud gun, as there is no pump line in the slurry tank, there is no feed for the mud gun. It cannot be used.

Besides all above equipment, GN Solids Control recommend a transfer pump to feeding for the shale shaker, transfer the slurry from the tank to outside system. The exact pump power depends on client’s request, normally, a 11kw or 7.5kw slurry pump should be fine for the drilling cuttings treatment plant.

2) 1 EA 36ft screw conveyor GNSC14A-36 can be used to collect cuttings from shale shaker and feed to the modular #2 solidification unit. http://www.gnsolidscontrol.com/screw-conveyor

3) For modular #2 the solidification unit, GN Solids Control recommends his drill cuttings solidification unit:
Client will only need the Lime storage tank & mixing tank skid. They do not need the drilling waste collection hopper and auger.

Recently, GN Solids Control got inquires from clients for the drilling cuttings treatment. Below is the client’s request.
They are proposing to use the cuttings blowing pump for drill cuttings transfer and disposal from an offshore jack up rig to a dedicated barge. The clients want to treat both OBM and WBM contaminated cuttings.

In addition to this, they will require some other equipment as follows:
Cuttings storage system: Bulk storage and retrieval systems 150bbls discharging at 30mt/hr
315hp, 1260cfm 150psi twin air compressor if available
100HP vacuum unit for spill containment (750 gal volume and 1600cfm flow)
40tph vertical cuttings dryer (DRY TO BELOW 5% OOC RATIO)
And they give note that it is of great importance that all equipment must be explosion proof.

Based on the client’s need, our sales people keep communicating with them for a suitable proposal for them.
The cutting transfer way can be effected by vacuum pump or screw conveyor. Vacuum pump is widely used to transfer oil sludge, 100% air running/operation, it can use for some special jobsite
Vacuum pump running video link, FYI: http://www.gnsolidscontrol.com/video/gn-drilling-cuttings-or-sludge-vacuum-transfer-pump-working-video

We have triple skip station to collect and transfer cuttings, and send drawings to clients for reference. Screw conveyor is another way to collect and transfer cuttings from mud processing equipment to the cuttings storage equipment.

And vertical cutting dryer is GN advantage. The Vertical cuttings dryer is mainly used to treat OBM cuttings. For WBM cuttings, GN recommended to use High G-Force drying shaker instead of vertical cuttings dryer to separate. GN attached some complete cutting management solutions for reference. And clients can also check jobsite videos on GN website.

GN Solids Control is leading manufacturer on solids control and waste management equipment. GN is also manufacturers for different models replacement screens. GN owns factories in Beijing China and have a big warehouse in Houston. Clients can visit GN website or contact GN sales team to get support.

GN Oil Sludge Treatment System is to use chemical to wash the oil sludge  with heat to temperature of 60-70 C degree. After washing the oil sludge  is pumped to  GN separation equipment to separate into oil, water and solids. The recycled water can be reused in the washing process which save a lot of cost to reduce the consumption of clean water, and the oil is clean enough to sell to the refinery company, the solids contain oil between 2%-3% which can be sent to biodegradation or thermal unit for final disposal.

The main components for oil sludge treatment include slurry transfer pump, pre-mixing slurry tank, primary shale shaker, decanter centrifuge, 3 phase disc vertical centrifuge, chemical dosing system, storage oil tank , storage water tank.

• Slurry Transfer Pump: The vacuum pump can be used to pick oil sludge from the pit and feed to the pre-mixing and heating tank. At this stage, chemical dosing system will feed chemical the mixing tank to improve the separation of the oil water and solids.
• A submersible is used to pump the slurry to feed to primary shale shaker for separation of coarse solids from the oil sludge.
• The screen on the shale shaker normally use 2 mm opening screen, after separation by shale shaker, a second pump which is a screw pump will pick up the fluids with fine solids and feed to the decanter centrifuge. The decanter centrifuge is the core equipment for the oil sludge treatment.
• After decanter centrifuge, the relatively clean fluids will be sent to a 3 phase disc centrifuge to be separated to water, oil and fine slurry.
• Later on, the water can be used to washing and mixing the slurry, the recovery oil will be sent to the oil storage tank.
  

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You can visit our website www.gnsolidscontrol.com to learn more information of oil sludge treatment decanter centrifuge.

According to the deck quantity of shale shakers, there are different forms of shale shakers:
1) The most popular is single deck shale shaker, for example: GNZS703, GNZS752, GNZS594 shale shaker, Derrick FLC 2000, FLC 500, DP 600 and Hyperpool series shale shaker, NOV Brandt Cobra, King Cobra, Mini Cobra, Venom and D380/D285P shale shaker, MI-Swaco MONGOOSE PRO, MONGOOSE PT & MEERKAT, ALS series
shale shaker

Dual tendam shaker

2) Double deck shale shaker is also popular as the obvious advantages on performance. For example: GNZS705, GNZS706, GNZS753; Brandt LCM-2D, MI-Swaco MS-2, and so on.
3) There are also many 3-deck shale shakers, like Brandt LCM-3D, MI-Swaco MS-3, NOV Brandt VSM300 series, etc…
The most popular shale model is single deck, as it is easier for operation and maintenance. Double deck shale shaker is also popular as the obvious advantages on performance. Below are some of the advantages of double deck shale shaker.
1) With the same bottom screen areas, the double deck shale shaker can handle more capacity. The double deck shale shaker can utilize big opening screens on the top deck for pre-separation, and then use a normal size or even finer size on the bottom deck.
2) The double deck shale shaker means 2-step separation, it can recovery more drilling fluids and it is more clean. With the same handling capacity, the top deck can remove the bigger size cuttings, and then the bottom screens can use a finer size screens for a better separation result.
3) Although the double deck shale shaker owns more screen quantity per unit, but as on the top deck, operators can use big opening steel screens to remove big cuttings, the big opening steel screens can last for a much long time compared with traditional wire mesh screens. And as the big cuttings will be removed by the top deck steel screens, it can protect the bottom wiremesh screens. The total screen cost for operators may be lower.
Although the double deck shale shaker has obvious advantages, but it is still not as popular as the single deck shale shaker. Why? The main reason is that, as there is a screen deck on top of the bottom screen deck, operators cannot easy observe the damage of the bottom screens, and operators have to remove the top deck screens in order to watch the situation of the bottom deck screens or to replace the bottom deck screens.

GN Solids Control is the first one Chinese solids control manufacturer who enterred in to US market and has warehouse and separate brand in Houston USA. GN Solids America is a 100% subsidiary of GN Solids Control. GN Solids America is existing in Houston USA for over 5 years. And now it becomes a more and more famous brand for mud solids control equipment, drilling waste management equipment and replacement shaker screens.

In order to offer clients fast services and delivery, GN Solids America does always have stock for the major equipment and the popular models. Below are some of the equipment normally available from GN Solids Control:

decanter centrifuge and shale shaker in stock

1) The NO. 1 sales product from GN Solids America is high quality replacement screens. GN Solids America is not only make and offer replacement screens for his own shaker model, but also offer replacement screens for other famous shaker models, like replacement screens for Swaco Mongoose shaker and ,mud cleaner, for NOV Brandt Cobra and Venom shale shaker and mud cleaner, and replacement screens for Derrick serious shale shakers.

2) GN Solids America has stocks of 2 popular centrifuge models: the 14inch decanter centrifuge and the mini size 9 inch decanter centrifuge. The 14inch centrifuge is the most popular decanter centrifuge models for drilling mud solids control, waste management. While the 9inch centrifuge is widely used in mining industry, and waste water treatment

3) Solids Control shale shaker is another hot sale equipment from GN Solids Control. Many customers when they visited GN Solids America warehouse and checked GN shale shaker, they are happy with GN advanced shaker design: the patent design sealing rubber and shaker deck angle adjustment system, the fast screen changing system. Another reason clients prepare GN shale shaker is that, shaker screen is a big part wearing parts for shale shaker. They know GN Solids Control is also the original manufacturer for replacement shaker screens. They can get high quality replacement screens from GN Solids Control with good price and fast delivery.

In the traditional drilling activities, there will only be mud solids control system for oil and gas drilling rigs. Pitless waste management recycling system is a new trend for oil field, and it becomes more and more popular in more and more countries and areas.
A Pitless waste management recycling system can also be known as Zero discharge system, or closed loop mud treatment system. It can be divided in to 2 parts:
The first parts is what we normally known as solids control system. It can be composed by solids control equipment as following:

mud cleaning system

1) The 4-stage solids control equipment: shale shaker, desander, desilter, mud cleaner, decanter centrifuge
2) Mixing system, such as mud agitator, mud hopper, jet mud mixer unit, shearing unit
3) Mud transfer equipment, like centrifugal pumps, screw pumps,
And other processing equipment, such as vacuum degasser, mud gas separator etc…
The solids control equipment is relative simple design, besides decanter centrifuge, all other equipment are not high tech. equipment.
Another part and the major part of pitless recycling system is what we normally called drilling waste management equipment. The drilling waste management system is used to treat the cuttings and liquids discharged from the solids control system, like the cuttings from shale shaker, desander, desilter, mud cleaner, or the soil from centrifuge. GN Solids Control is among the few manufacturers who can make full line drilling waste management equipment for pitless recycling system. Below are some major pitless recycling equipment made by GN Solids Control for your information, for anyone who wants for more information of pitless recycling system, you can contact GN Solids Control directly:
1) High G drying shaker. It is mainly used to treat water base mud and cuttings.
2) Vertical cuttings dryer: it is mainly used to treat oil base mud and cuttings. After VG dryer, the oil content can be reduced to 3% ~ 5%.
3) Dewatering unit
4) Screw conveyor auger system
5) Vacuum slurry transfer pump
6) Solidification unit

Many customers are interested in GN oil sludge separation systems. But the oily sludge separation is a new field to most companies. They have limited understanding of the process and technology of oily sludge separation. Below is a general introduction of GN Oily sludge separation system in order to let them to know more about GN oily sludge separation technology, especially for treatment of:
1) Crude Oil tank cleaning sludge
2) Refinery plant waste oil sludge
3) Drilling waste oil sludge

Question 1: What is the Process capacity of GN oily sludge separation unit?
GN Solids Control have 5 m³/h and 15 m³/h system, this capacity is after dilution and mixing before feeding to shale shaker.
Furthermore, GN Solids Control has a 1~2 m³/h unit. The 1~2 m³/h unit is a one-skid unit with very compact design. It is mostly used as test unit or for small capacity.

Question 2: What kind of specs (%solids and water) can be expected on the recovered oil, water and solids? Like BS&W of recovered oil; Hydrocarbon content in recovered water ; hydrocarbon content in recovered sand/soil/solid.
The recycled water from 3-phase centrifuge is 500-1000PPM. It can be reused in the washing process.
The BS&W of the Recovery Oil from 3-phase centrifuge is 2-3%. It is clean enough to sell to the refinery company.
The solids discharged from centrifuge contain oil between 2%-5% which can be sent to biodegradation.

Question 3: What temperature does it operate at?
The tanks include pipelines for heating media can be hot steam or hot oil. Temperature recommended to 60-70 C degree.
Does GN Oily separation system require the use of heating system, if so, please include all details ( type of heating system, Temperature range, power requirements, consumption, etc…)

GN Oil Sludge Treatment System is to use chemical to wash the oil sludge with heat to temperature of 60-70 C degree. There is heating lines in the tanks. But clients need to prepare Boiler, or Oil Heater to supply hot oil or steam to the heating line

Question 4: Is this unit is explosion proof or not!
Yes, all GN oily sludge separation systems are Explosion proof.

Dewatering unit, is also named as chemical dosing system, is widely used in waste water treatment and oily sludge treatment. The right and suitable chemical dosing is the core point of for a better separation result of oily sludge separation. The function of a chemical dosing dewatering unit is too treat the liquids to make it easier for next-step equipment process or improve the separation performance.

The 4-tank Automatic chemical dosing system is an optimized design by GN Solids Control. The system is including 2 chemical dosing unit:

1) The first chemical dosing unit is a 3-tank automatic power Polymer Mixing System. The chemical mixing tanks are made from stainless steel for longer lifetime. The 3 tanks are connected to each other on the top, each tank is equipped with an agitator to help for mixing.

When the power Polymer is fed by the auto-auger feeding system though the stainless mixing hopper, the power polymer will be mixed in the 1rst compartment. When the 1rst compartment is full, the mixed chemical liquid will flow to the 2nd tank. When the 2nd tank is full, then it flow to the 3rd storage tank.  And then it can be used by decanter centrifuge or premixing tank, or high G drying shakers. The chemical dosing system is including Solenoid valve, Piping System, Flow Meter and PLC

Control System for automatic continues operation. Operators can set the time for polymer mixing and dosing. During the chemical liquid flows from the 1rst to the 3rd tank, the chemicals will be quality for used. Then from the 3rd tank, the quality liquid chemicals can be transferred for dosing.

2) The 4th tank is a stainless steel tank with agitator for another chemicals mixing and dosing, it can be used to mix coagulant for  treatment. The previous design is with a separate Polyethylene tank. GN Solids Control update the design to combined together with the PAM mixing system. In this case, the total design is more compact and the material standard is higher. And it looks much nice now.