GN Solids Control finished a complete a solids control mud system for a drilling company in India. It is a 3-tank mud system plus a separate trip tank and separate pill tank.

The trip tank is equipped with mud agitator and a small size centrifugal trip pump. And plus, there is a radar level gauge equipped on the trip tank for the auto start / stop of the trip pump.

There are 2 active tanks and 1 water tank, each tank with usable capacity 250bbl. The #1 active tank is shaker tank, which is holding 2 sets of solids control shale shaker, a 1200GPM vacuum degasser, a desander, and a desilter mud cleaner. As the mud system is designed for offshore rigs, the double deck shale shaker GNZS706 is applied in the system. It is a 6-panel double deck shale shaker with linear motion.

After shale shaker and before desander, desilter separator, there is a 1200GPM vacuum degasser applied in the system. All the mentioned separation equipment are allocated on the shale shaker tank. And there are electrical control panels on the tank top to control all the equipment in the system. 37KW (50hp) centrifugal pumps are used as feeding pump of desander and desilter.

The #2 active tank is mixing tank. And plus, there is a 14 inch high speed centrifuge applied in the system. It is a fixed speed decanter centrifuge with high speed for low gravity separation. Vertical slurry pumps are used in the system to feed for the decanter centrifuge. The model of the feed pump is GN50YZ40-10B with 5.5kw explosion proof motor. There are 2 feeding pumps in the system, one for feeding, another one is for back up. A vortex and venturi mixing hopper unit is used in the system for mud mixing. A 37KW (50hp) centrifugal pump is used as mixing pump for the hoppers.

The # 3 mud tank is a 250bbl water tank. There is no separation or mixing equipment used in the water tank. There are pipelines connecting the water tank to all the rest active tank and mixing tank compartment.

Decanter centrifuge and disc centrifuge are both widely used in oily sludge separation system. Compared with filter press, centrifuge separation has the advantages of supporting continue separation, and less human being involved in.

Before centrifuge separation, double deck shale shaker is used to remove the big particles and sand, and to reduce the mud weight. The advantage of using a double deck shale shaker in the oil sludge treatment system is that it does not block the screen in the presence of fibrous or coarse particle materials. Customers choose the screen opening or API size of the upper coarse screen and lower fine screen based on the distribution of the incoming materials.

Hydro cyclone is not used in oil sludge treatment systems because the viscosity of the oil sludge material is usually high, and the cyclone separator can easily block. The bottom fine mesh screens of the double-layer shale shaker can replace the separation effect of the cyclone. Compared to cyclone separation, the separation efficiency of shaker screen particles is 100%, and particles larger than the screen aperture will be 100% separated.

Below is a general introduction of decanter centrifuge and disc centrifuge.

Decanter centrifuge is horizontal type centrifugal separator. There are 2 phase decanter centrifuge and 3 phase decanter centrifuge. 2 phase decanter centrifuge is for liquid and solids separation. It can allow solids content till 15% ~ 20%. But the less solids content, the better separation result.

3 phase decanter centrifuge is for oil, water and soil separation. Operators can change the degree of the liquid discharge dam to adjust the clearness of oil and water. The recovered water and oil can be reused in the system. But it is for a general separation, the water is not clean, and the oil is not pure still with soil and water. And the soil cake is not dry.

Disc centrifuge is a kind of vertical centrifuge. It is for 3 phase separation. Disc centrifuge can get relative clean water, and oil, and get dryer soil cakes. But disc centrifuge is easy to be blocked, it must be check and viewed timely. It means it can only allow small soil content before enter into the disc centrifuge. Hence the disc centrifuge is normally used after 2 phase decanter centrifuge or 3 phase decanter centrifuge.

CIPPE in Beijing is the largest exhibition related to oil and gas industry and petroleum field. 2023 Beijing CIPPE was hold from 31 May to 2nd June 6. Although the weather is hot, large number of visitors and exhibitors were coming from long away. GN Solids Control got back from the big event Beijing CIPPE oil show. Old clients and new clients were meet on GN booth, and arrange factory visiting outside the exhibition.

In order to help clients have a better understanding on the development and improvement of GN Solids Control, and do not need to go here and there, GN took its major separation equipment and transfer equipment on the booth.

Item #1 on display: Transfer equipment Solids and sludge vacuum pump.

Item #2 on display: Transfer equipment Screw conveyor

Item #3 on display: Separation equipment big bowl decanter centrifuge 22 inch
GN Solids Control makes various models 22 inch decanter centrifuge to suit for various material separation. The design and size of the bowl will be modified based on the project situation. Some times, the material standard should also be suit for the material demands. In this case, it is necessary for GN sales engineers to communicate and know more about clients separation demands.

Item #4 on display: Separation equipment high speed decanter centrifuge 14 inch
GN Solids Control makes various models 14 inch high speed decanter centrifuge to suit for various material separation. The design and size of the bowl will be modified based on the project situation.

Item #5 on display: Separation equipment disc centrifuge. The disc centrifuge is for 3 phase separation. As the disc centrifuge can only allow small percentage soil content, it is easy to be blocked, it is normally used after 2-phase decanter centrifuge.

Item #6 on display: Separation equipment vertical cuttings dryer.
Drilling waste vertical cuttings dryer is specially designed and made for oil base mud and oil base cuttings. It can reduce the oil on cuttings to less 5%.

Item #7 on display: Separation equipment high G drying shaker.
High G drying shaker is for drilling waste management, it is used after solids control system. It is mainly used for water base mud and water base cuttings.

Based on its major production decanter centrifuge for liquid and solids separation, GN Solids Control develops its application scope from oil and gas drilling, non-oil drilling and trenchless slurry separation, to industry separation.

GN Solids Control with its sister brand GN Separation can covers more and more liquid and solids separation field, such as oil sludge separation decanter centrifuge and disc centrifuge, mining slurry separation decanter centrifuge, chemical industry decanter centrifuge, Ore And Minerals Separation decanter centrifuge, Grinding And Polishing Liquid separation decanter centrifuge, plastic recycling decanter centrifuge, Soda Plant Waste treatment decanter centrifuge,  Pulp & Paper industry waste treatment decanter centrifuge, and so on.

The centrifuge size GN Solids Control & GN Separation making covers sizes from mini size 9 inch, to popular size 14 inch, and big bowl 18 inch, 22 inch and up to the huge bowl 30 inch. There are few manufacturer in the world have the capability to make big bowl centrifuge up to 30 inch. GN Solids Control can make. And for the same bowl diameter centrifuge, GN Solids Control has various models with various design and material standard to cater for different applications. For example, for normal industry and for food industry, the material grade and the grease grade are much different. And even the processing technology various much.

Right now, GN Solids Control is working on a 14 inch decanter centrifuge overseas Electrolytic Purification of Copper Application. The model of the 14 inch centrifuge is GNLWS364, compared with the GNLW363D series, GNLWS364 has a bigger bowl length and diameter ratio up to 4. The centrifuge bowl diameter are both 14 inch, but GNLWS364 is longer in order to suit for the specified applications.

The centrifuge is equipped with VFD control panel, plus PLC smart control and HMI touch screen. The VFD panel cabinet is made from stainless steel with Grinding And Polishing Liquid. All electrical components are choose from top and international famous brand. The VFD drive brands is INOVANCE / ABB. The PLC brand is Siemens or Omron.

GN Solids Control makes various size slurry separation equipment to treat the slurries which is generated from trenchless activities, piling, pipe jacking, super vac activities.

This week, GN Solids Control is working on the assemble and commissioning of a full package slurry separation system. The slurry treatment system is designed and made for a New Zealand client for their super vac excavation slurry. The system is customized with the client’s red color.

Below are the major separation equipment used in the slurry equipment:
The first separation equipment: the mining separation screen separation device for coarse separation.
The second separation equipment is the High Frequency Vibrating Screen for fine solids separator.

The 3rd separation equipment is desilter mud cleaner. 4 inch desilter assembly was used for further clarification. The cut point of 4 inch desilter is 27 microns. It means most of the particles above 27 microns will be removed and discharged from the desilter separator, and falls down to the under flow shale shaker.

The 4th separation equipment is high speed decanter centrifuge. The cut point of high speed decanter centrifuge is 2 ~ 5 microns. The slurry enters into decanter centrifuge already treated by the previous screening separator and the desilter mud cleaner, the solids content is lower, and there is no particles bigger than 30 microns. After treatment of decanter centrifuge, most of the fine solids above 2 microns will be removed.

After some circles of above separation, the ulti-fine solids smaller than 2 microns will be more and more. In order to solve the situation, chemical dosing unit will be applied to used together with high speed decanter centrifuge for dewatering treatment. The chemical dosing unit and the decanter centrifuge used together for lower gravity solids separation.

Screw conveyors are used along with the mud system for carrying the solids waste discharged from the system.

Drilling mud agitator is a popular equipment in various kind of drilling mud system, includes but not limited to oil and gas drilling, water well drilling, Horizontal directional drilling, and other trenchless underground activies.

Drilling mud agitator is designed for stirring drilling fluids and slurries in open tanks. It is to avoid the solids settle down, and ensure the equal mixture of liquid and solids. It is the necessary process to ensure qualified drilling mud to support drilling activities.

GN Solids Control makes various models drilling mud agitator from motor size 3kw to 22kw. Drilling mud agitator is a relative sample design equipment. The major components of an agitator is driven motor, gearbox reducer, agitator shaft, and impeller. The gearbox reducer is connected to driven motor. The impeller / impellers are installed to rotating shaft, the shaft is connected to gearbox reducer output shaft and rotated with it.

There are 2 kinds of gearbox reducer which are used for drilling mud agitator.
The most popular gearbox reducer is worm gearbox. It is more widely used, as the economic cost.
Another kind of gearbox is helical bevel. It is the heavy duty gearbox with bigger efficiency and reliable performance. And the maintenance is relative easier.

The agitator motor size, shaft length and impeller diameter, impeller quality should be caculated based on below information:
1. The type of the tank: it is rectangular tank or cylindrical tank.
2. The size of the mud tank: Length, width and height of the tank
3. How many agitators are used in the mud tank?
4. The frequency of the driven motor: it is 50 hz or 60hz.
5. The density of the mud. For heavy mud, the agitator size will be bigger size than light mud. Mud agitators for actives tanks may be bigger in size, or more in quality than suction tank and reserve tanks.

Besides drilling mud solids control equipment, GN Solids Control also make centrifugal pump for mud mixing, mud transfer, and suction in drilling mud system.

The Russian International Oil and Gas Exhibition NEFTEGAZI was founded in 1978 and hosted by Expocenter. It is a professional oil exhibition in the Eastern European region and a stage for global suppliers to showcase new oil and gas industry technologies. NEFTEGAZI is held once a year, with an exhibition area of 35000 square meters, over 22820 visitors, and nearly 600 exhibitors. More than 150 exhibitors from China as a national exhibition group participated.

Russia is a major market of GN Solids Control. And GN Solids Control come for NEFTEGAZI every year. This year, GN took his latest design equipment for the exhibition, meet many clients there, and get great success.
Below is the major equipment GN Solids Control took for NEFTEGAZI exhibition:

1. Decanter centrifuge: It is widely used in oil and gas drilling. Normally, there is 2 major applications of decanter centrifuge, and 1 centrifuge is fixed speed control, and another one variable speed control. Firstly, it is used with middle speed in solids control system for high gravity separation. And plus, the decanter centrifuge should be used in the drilling waste management system with high speed for low gravity separation and / or for dewatering treatment.

2. Vertical cuttings dryer. It is the major separation equipment for oil base mud and cuttings. The purpose of the vertical cuttings dryer is to reduce the oil on the cuttings to 3% ~ 5%. With 3% ~ 5% OOC, the solids discharge is easy for shipment, and for next step treatment.

3. Replacement shaker screen. Shale shaker is the basic separation equipment for all kinds of drilling activies, Shaker screen is a major consumable parts of shale shaker especially on oil and gas drilling field. A oil and gas solids control shale shaker need 3 pcs ~ 6 pcs screens per shaker model. There will be 1 shale shaker ~ 4 shale shakers per the size of drilling mud system. In Oil and gas drilling mud system, the screens must be changed every a few days. In some hard drilling section, even every 2 or 3 days. So replacement is a continues and big cost for drilling activities.

GN Solids Control has his own screen plant to make various type replacement screens for most of the popular shaker models. GN Solids Control can also make customized screens per clients request, e.g. with customized sizes, customized color / packing / logo / branding, etc…

GN Solids Control just get back from IE expo Shanghai China environmental show. It is one of the largest exhibition on Environment protection, and even one of the largest on in the area of Asia. You can learn more about  IE expo China on its website: https://www.ie-expo.com/

The Shanghai Environmental Protection Exhibition showcases the world’s top technologies and solutions in the field of environmental pollution control, including but not limited to the following aspects:

The cutting-edge technologies and latest solutions in the field of environmental pollution control, including sewage treatment, water supply and drainage, solid waste treatment, resource recycling, air pollution control, indoor air pollution control, site restoration, environmental monitoring, and environmental service industry.

GN Separation, the 100% subsidiary of GN Solids Control, came for 2023  IE expo China and took its major separation equipment for the show.

1. Double deck shale shaker. It is used a coarse separation equipment on soil treatment or waste slurry treatment. GN Separation makes various types of separation shakers for oil and gas drilling, for non-oil drilling, for industry separation, for mining slurry separation, etc…

2. Big bowl high speed decanter centrifuge for dewatering treatment. The centrifuge model for the show is a 22inch centrifuge with big bowl and high speed, high G force for dewatering treatment, and 3 phase separation.

3. Disc centrifuge. 3-phase centrifugal separator is widely used to treat oil sludge to get soil, water, and oil. Besides 3-phase decanter centrifuge, GN Separation also take his 3-phase disc centrifuge for 2023  IE expo China.
4. The solids and sludge vacuum pump. It is a 100% air driven pump which is widely used to suck and transfer solids and sludge, especially for long discharge transfer. The transfer distance can up to 1000m.

Besides the shale shaker and centrifuge separation, GN Solids Control with its branch company GN separation is also specialized in desander and desilter separator, vacuum degasser, centrifugal transfer pump, screw conveyor transfer device, as well as replacement screen for various brand shale shakers.

GN Solids Control is a professional centrifuge manufacturer, who is focusing on drilling mud decanter centrifuge separator, drilling waste management dewatering centrifuge, as well as various sizes of industry centrifugal separators.

Even for the same model centrifuge separator, if the treating material and the separation demands are different, there many be some small modifications on the bowl and discharge design. Hence, in order to get the most suitable centrifuge model to suit for their applications, clients should contact GN Solids Control sales engineer, to communicate the project situation and their technical demands, and then GN Solids sales engineer will recommend them the suitable centrifuge design.

For example, a client said they are looking for centrifuge separators for oily sludge treatment. Say the liquid treatment which contains on 90% water and 5% oil and 5% Solids / soil. Although the 5% solids content is mot much high, we also must to make sure that what is the max. Solids size of the 5% solids content.

The reason is that, for 2-phase decanter centrifuge, 3-phase decanter centrifuge, and disc centrifuge, the max. Solids size and solids content various much. And all centrifuge separator cannot allow big particle, it is better less than 10mm, and better no more than 15mm, no matter how less the solids content. Otherwise, other separators must be used for feeding into centrifuge.
1. 2-phase decanter centrifuge.
It is a liquid and solids separator which the most popular centrifuge model used in oil and gas mud system for low gravity and high gravity solids separation. It requests Feed Material with Solids Less 10% and Particle Size less than 2mm. It can be used before 3-phase centrifuge to reduce the mud weight, and help to improve the 3-phase centrifuge efficiency. Shale shaker is normally used before 2-phase decanter centrifuge to reduce the mud weight and remove the bigger particles.
2. Disc centrifuge is for 3 phase separation.
Disc centrifuge can get clear water, oil and dryer soil. But is has strictly requests on the feeding slurry. The requested Feed Material must be with Solids ≤ 3%. It is not suit for the application.
3. 3-Phase Decanter centrifuge.
3-Phase Decanter centrifuge requests Feed Material with Solids Less 10% and Particle Size less than 2mm.

Screw conveyor is the most popular transfer device which is used to carry drilling cuttings from solids control shale shaker, coarse shale shaker, desander, desilter, mud cleaner as well as decanter centrifuges in the drilling mud system. They carry the drilling waste from the mud system to mud cutting waste pits eliminating water-jetting.

GN Solids Control has rich experience to make drilling waste transfer screw conveyor which meet KOC HSE demands. KOC launched many new rig tender at tend of 2022, as this reason, GN Solids Control got many orders including screw conveyors. In the 1rst quarter of 2023, GN Solids Control work shops are business on the screw conveyors, around 100 screw conveyors were shipped or will be shipped from GN factory.

KOC is the National oil company of Kuwait. They have strictly technical and HSE requests on the screw conveyor. As they faced some human hurt cases which caused by their previous screw conveyors.

GN Solids Control is among the first suppliers to offer the qualified screw conveyors per KOC new HSE standard.

Below are the basic technical and HSE design GN Solids Control offered to suit for KOC standard. Through the years, GN Solids Control offered hundreds of such standard screw conveyors to drilling companies and rig companies to service KOC projects:

1. There are covers on top of the screw conveyor augers. GN Solids Control provide metal plate auger covers and gratings as auger covers per order request. They covers are fixed on the top of the auger with hinges on one side & provision for locks / bolts on the other side. It is for fast open and close.

2. There are grab wire loop along the whole auger length with is fixed on top of the auger auger 1.automatic power trip when the top cover is opened up from closed position.

3. Emergency STOP Switches located at Shale Shaker area and Near Auger.