Dec 24

A drilling mud mixing system is quite popular in drilling mud systems for both oil and gas drilling and other drilling works like HDD and etc, because during drilling there is always loss of bentonite and other necessary chemicals to the drilling fluids, in order to keep the drilling fluids to be suitable for drilling, such components have to be added into the drilling fluids in time. A mud mixing system is also needed in a mud plant, where the used mud should be re-treated and prepared for future use.

A complete mud mixing system should contain following equipment:

1. A mud mixing hopper, which is a venture hopper. It is mainly used for input the bentonite. GN has 2 models of mud mixing hoppers, the bigger model GNSLDSB uses 40mm nozzle and inlet and outlet of 6 inch, while the smaller model GNSLDMB uses 20mm nozzle and inlet and outlet of 4 inch. They could be linked to GNSB series centrifugal pumps to combine a complete mud mixing unit.

2. A centrifugal pump. GNSB series centrifugal pumps are one of GN popular products. They are fully interchangeable with Magnum pumps even in small parts. GN has centrifugal pumps from 7.5kw to 75kw, with capacity ranging from 35cbm/hr to 320cbm/hr. They could be suitable for most drilling works covering both oil and gas drilling, HDD projects and some TBM’s.

3. QTY of mud mixing hopper and mud mixing pumps depends on the jobsite condition and the consideration of the end user. Normally, in a continuous working project of a large project, clients always prefer a dual hopper design with parallel centrifugal pumps. Hoppers could be one under use and the other back up, so are the pumps. By connected pipelines, either hopper can be linked to either pump to mix liquid from any tank. Comparing with centrifugal pumps, the hoppers are less consumable, that’s why it is not so common to use dual hoppers. Some clients prefer double pump with single hopper. And most popular model is single pump plus hopper.

May you need more information, welcome to contact GN directly.


written by shale shaker \\ tags: , , , , ,

Dec 22

During the past decades, China has developed quite rapidly and soon becomes one of the biggest resources consumers in the world. Meanwhile, with the largest population in the world, the long-sight China government put an eye on environment protection quite strictly. According to laws and regulations, all oily sludge must to be treated well before dumping.


As a well known brand, GN Solids Control always comes up with professional solutions. Recently, GN just provide to a domestic client in Tianjin a combination of equipment including a decanter centrifuge GNLW454ET and GNSD90 disc stack separator.

1. GNLW454ET is a centrifuge model with 18 inch bowl diameter, and a length diameter ratio of 4. It is a high speed centrifuge with bowl rotation speed up to 3000RPM. Comparing with GNLW452 with 2 as bowl length-diameter ratio and GNLW453 with a ratio at 3, the GNLW454 with a longer bowl could give clearer separation result, especially for the material with higher viscosity, for example, after chemical dosing procedure.

2. GNSD90 disc stack is a 3 phase separator which can separate the oil, water and solids. But it has some limit for solids size input, that’s why before the disc stack there should be a decanter centrifuge for separating out the particles from 2 to 5 microns. After the disc stack, the oil can be recovered to sell for money, the water can be reused in the same separation unit for dilution and the solids particles are easier for future treatment or discharge.

GN has different models of decanter centrifuges and disc stacks for meeting the different capacity requirements. And if necessary, GN could also help to provide the equipment before the decanter centrifuges according to the material condition and requested treating results. Like the shale shaker, chemical dosing unit and preheating mixers.

GN Solids Control is an API Certified manufacturer, and also certified by ISO and HSE. GN Solids Control has its products sold to more than 70 countries in the world. If you need more information or similar project, welcome to contact GN Sales directly for consultance.


written by shale shaker \\ tags: , , , , ,

Dec 15

Decanter centrifuges are one kind of GN Solids Control’s core products, and they are widely used in many different industries in more than 70 countries in the world along with GN Solids Control’s international market. GN Centrifuge family have big bowl ones and baby centrifuges, including as large as 30 inch bowl and as small as 9 inch bowls. This dewatering centrifuge has a bowl of 9 inch diameter, one of the smallest models among GN centrifuges.

GNLW224EP-VFD Centrifuge is used for this project as dewatering centrifuge to work together with chemical dosing units. GN’s 9 inch bowl sized decanter centrifuges could be divided into 2 main models, GNLW223 and GNLW224, which are suitable for different applications. Both of them are electric driven.
GNLW 223 is a single motor decanter centrifuge, which has a high speed up to 3800RPM. The bowl length-diameter ratio is 3. In practice, it is widely used for HDD drilling, diamond drilling and etc.

Comparing with GNLW 223 decanter centrifuge, GNLW224 has same diameter bowl but longer, with bowl length diameter ratio as 4. In this case, although the treating capacity is same, because of the longer route with the longer bowl, the separating result could be dryer.


GN Dewatering Unit

For this project, the decanter centrifuges are planned to be used together with chemical dosing units. The client chose GNLW224. Why? As is known, a high speed decanter centrifuge can separate out particles from 2 to 5 microns. And when the particles are smaller than this range, it is time to invite in a chemical dosing unit. By adding polymer agent into the material, the extra fine particles could be flocculated into larger ones, in order to be chosen out by a decanter centrifuge, like in this project, the GNLW224-VFD.

GN has larger centrifuges for same purpose. Please consult GN direct for a more suitable solution.


written by shale shaker \\ tags: , , , ,

Dec 03

Last month, GN Solids Control has delivered a liquid mud plant with totally 7500BBL volume to a client from South America. A mud plant is a place used for prepare the drilling mud for drilling rigs, it could be regarded as a mud station. In some mud plant, the used mud can be also treated then returned to solids control system. 7500BBL mud plant is not a small one.

This liquid mud plant manufactured by GN Solids Control is combined by following sections:

1. Mud mixing tank with agitators. This tank is used for prepare the drilling mud by adding useful chemicals into it through a mud mixing hopper. This mud mixing tank also has a storage capacity of 7500BBL.

2. Mud mixing hopper and mud mixing pump. In practice, a mud mixing hopper and a mud mixing pump could be regarded as a integrate mud mixing unit, which can be located on a mud mixing tank or separately besides and mud mixing tank. The end user can choose parallel hoppers together and 2 centrifugal pumps to be linked in parallel. Either pump could serve for either hopper, one for use, the other back up.

3. Vertical mud storage tanks, totally 14 sets, each with 500BBL volume. In order to save space, those storage tanks are made in cylinder shape vertically. All tanks are equipped with level meter to show the mud volume inside. By well-designed pipelines, pump from outside those tanks can suck mud from each tank.

Besides the mud liquid plant, GN Solids Control can also provide waste management systems for both drilling cuttings treatment and drilling fluids treatment, including chemical dosing and decanter centrifuge. For mud liquid plant, clients can invest in such a system to treat the used drilling mud, to remove the particles from the drilling liquid and return the clean mud back to the mud plant.


written by shale shaker \\ tags: , , , ,

Nov 30

As a responsible country, China government has built “One belt, one Road” involving many countries all over the world. Like in Africa, lots of infrastructure projects are booming, and so are the requirements for the resources like the crude oil. Luckily, the born rich Africa has rich reserve for gold and oil, and also a splendid steppe. And from the very beginning, African government pay an eye to the environment protection along with resource exploration, and in most of countries in Africa, drillings are requested to have a waste management system to go along with as a premise to start.


GN Solids Control, as one of the leading solids control and waste management solution providers, enjoy good reputation in Africa, as in other places in the world. Recently GN has provided another 2 sets of drilling waste management equipment package to Africa, including:

1. Vertical cuttings dryers 2 sets: GNCD930 series vertical cuttings dryers are designed for treating oil based mud drilling cuttings and per some projects’ feedback, they are also suitable for water based mud, too. Such drilling cuttings are always from shaker discharge of a drilling system, quite muddy with high water content. By using the vertical cuttings dryer, the OOC could be reduced to 0.5%.

2. High speed waste management decanter centrifuges, 2 sets. High speed decanter centrifuge is always located after the vertical cuttings dryer for making the liquid phase cleaner. It has a VFD control panel for adjusting speed and differential speed to achieve an ideal result as per liquid condition.

3. Screw conveyors, 6 sets: screw conveyors could be used under shaker to collect muddy cuttings and also used to feed the vertical cuttings dryer. They can be horizontal or sloping based on jobsite layout.

Welcome to contact GN for more information.


written by shale shaker \\ tags: ,

Nov 22

Are you familiar with Hydrovac Slurry Treating project? What equipment do they use for treating the hydrovac slurry? It is not easy to remove the solids from this kind of slurry if you don’t have a clear and efficient solution. Luckily, GN Solids Control is quite professional in such designs. Here is a case in North America using GN hydrovac Slurry Treating System.

There are several steps for separating the hydovac slurry, because of the different size particles’ distributions.


1. Shaker with Coarse screens: The slurry is transferred to the first step for separation, which are coarse shakers with steel mesh of 3mm. By using 1 or 2 sets of this shaker, the large particles or rocks could be removed from the slurry.

2. Shale shaker with fine screens:The fine screens can range from API 10 to API 400. Normally, the fine screens are used to remove particles up to 100 microns. GN provide composite material shaker screens for the fine shakers. Fine shakers are always located below coarse shakers to enhance efficiency and reduce space occupation.

3. Cyclones are next step separation. There are 10 inch desander cones and 4 inch desilter cones fed by centrifugal pumps, which are used to choose out particles below 40 microns and below 20 microns.

4. After the cyclones comes the decanter centrifuge with big bowls. The centrifuges are always quite useful and vital as final separation step to remove particles from 2 to 5 microns. For this project, there are 2 big bowl centrifuges involved for a large treating volume.

May you need similar solutions or need more information, please contact GN sales team directly.


written by shale shaker \\ tags: ,