Shale Shaker

This week GN solids control shipped one unit of HDD mud recycling system and dewatering unit to Sinopec project. HDD is one of our major applications, GN equipments 4 major applications including oil & gas industry solids control system and drilling waste management system and oil sludge separation system, HDD & CBM industry mud recycling system, Piling & TBM desander unit, Industry waste water treatment.


The technical configuration is as below:
1) 3 phase cleaning mud recycling system mud tank, with containerized frame for convenient transportation, the user can put the mud tank and the frame with equipments on the trailer and move to another site from one site.
2) 1 unit of GNZS703F shale shaker as the first phase cleaning equipment, equipped with 3pcs of durable composite material shaker screens with customized API mesh screen. We produce OEM composite material shaker screens from API 20 to API 325 as per client’s requirement.


3) 1 unit of GNZJ703F-1S8N mud cleaner, with under flow shaker, desander cone and desilter cone combination unit. Equipped with 2 units of centrifugal pumps as feeding pump of desilter cone and desander cone.
When the drilling fluids temperature is over 70 degree, we will use special material hydrocyclones for longer working life.
4) Dewatering system with same dimension mud tank
5) Decanter centrifuge GNLW363C-VFD is the 4th stage cleaning to separate fine solids smaller than 15 microns. After several years working, more and more fine solids are accumulated in the tank bottom, these fine solids can not be separated by the desilter cone, then high speed decanter centrifuge is required to clean the drilling fluids, otherwise it can not be reused for drilling again.

Last week, GN finished production of 2 m3/h oil sludge separation system for USA client, this week, we finished production for 15 m3/h oil sludge treatment system for Europe client, this is the repeat order for this client, they bought one unit of 1 m3/h compact design oil sludge separation system for the same project. They are satisfied with the separation result, so repeat order for a bigger treating capacity system.
The configuration of the containerized 15m3/h oil sludge separation system:
1) Premixing tank: The sludge vacuum pump transfer the oil sludge from the waste pit to the pre- mixing tank, which is equipped with heating line inside the tank around, and the mud agitator installed on the tank to agitate the oil sludge to prevent the solids from accumulation in the tank bottom. The system will be used in cold weather area, we put them in the container to keep the equipments warm.


2) Shale shaker tank, to separate coarse solids from the oil sludge, this is to protect the decanter centrifuge, coarse solids will wear the centrifuge screw very quickly, GN decanter centrifuge screw is made of stainless steel 304 by heating, the flights are protected by tungsten carbide tiles, it is fixed by special glue and bolts.


3) Decanter centrifuge modular: With one unit of 22 inch bowl decanter centrifuge installed inside the 40ft container, the screw pump is installed on the centrifuge skid, the screw conveyor is installed under the centrifuge solids discharge port to transfer the solids outside the centrifuge container.

One set of complete oil sludge treatment system ready for delivery this week, this is a 2m3/h customized design oil sludge treatment system as per client’s requirement. The main purpose of the client is to recover the oil from the oil sludge. It can be widely used for refinery oil tank bottom cleaning, oil sludge separation, oil based cuttings treatment, contaminated soils treatment, hazardous waste treatment, etc. applications.


The technical configuration is as below:
1) Premixing Tank Module
The vacuum pump transfer the oil sludge from the waste pit to premixing tank, which is equipped with heating lines, mud agitator, the oil sludge will be washed, heating and agitating, mixing with chemicals for flowability.


2) Classify System: The oil sludge from premixing tank will be transferred to a V bottom tank with screw conveyor on the bottom for solids sedimentation and liquid classification. The top layer will flow to disc centrifuge for oil and water separation. The bottom layer will be washed with chemical jetting, which will be shipped to solids control module.


3) Solids Control module
The solids control module consist of course solids shale shaker and fine solids decanter centrifuge, the 2 panel shale shaker is the mini shale shaker among GN all the shale shaker models, it will reduce the solids content and separate the big solids bigger than 1mm, so that the decanter centrifuge will not be damaged.

The decanter centrifuge is the mini decanter centrifuge with 9 inch bowl, the highest speed is 4500rpm, the separation cut point is 2~5 microns. With good efficiency of the centrifuge, the clean fluids will flow to disc centrifuge for water oil separation, otherwise the high solids content will influence the separation result of the disc centrifuge.

This week GN shipped one set of workover rig solids control system to Australia. The configuration is as below:
1) Shaker tank with 2 units of shale shaker to clean the drilling mud


2) Mixing tank with mixing hopper, 2 units of centrifugal pump to prepare for new drilling fluids
3) Mud agitator, mud gun, pipelines, valves all equipped with both mud tanks
The difference for this solids control system between normal solids control system:
1) All the electric control system include cables, glands, electric components, and the design should be comply with Australia explosion proof standard
2) The lifting pad, walkway, handrail, the distance between adjacent components, etc should be comply with Australia safety regulations
3) The welding and painting standard is also very strict in Australia, the tank top surface is fixed with high strength glass fiber reinforced plastics.


4) The clean gate is with high position gate valve type clean gate for convenient operation and cleaning of the accumulated solids
GN design and manufacture the workover rig solid control system as per the client’s special requirement and Australia standard. This is not the first unit of solids control system shipped to Australia, we had sold over 30 units of mud recycling system for HDD industry.

Recently GN solids control shipped 8 sets of shale shaker without vibration motor shipped to our clients, the client will install the vibration motors by themselves who had installation capability. This is not the first order from this client, they repeat orders because they are satisfied with the working performance of GN shale shakers which they ordered before.


Shaker deck is the most esscential components for a shale shaker, the bottom material treatment before painting, we owns our ball blasting machine, the ball blasting degree is 2.5 with working life 10 years more, we can control the bottom treatment quality better, unlike other solids control manufacturer in China, they use sand blasting which is provided by third party supplier. 3 layers painting and coating by choosing Japan Kansai or US ppg brand painting, to promise the shaker deck not to get rusty and abrasion during the operation. In some tenders, it required the complete the shaker deck( all the vibration and non vibration components) are made of stainless steel material, it will increase the shaker production cost a lot and the the client has to pay more money.


The deck bottom of GN shaker is made of stainless steel material, and the unique rubber sealing technology to ensure the reliable performance of the rubber sealings, we also use GN own made composite material shaker screens, the working life is 2 times compared with the traditional steel frame shaker screens.