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: ,

Nov 12

All drilling works use mud, and all mud generated the slurries which should be treated, including the oil and gas drilling, the HDD drilling, the TBM drilling and also pipe jacking. And for treating the slurries, normally 4 steps of separating equipment are needed, the shale shaker, desander cones, desilter cones and decanter centrifuge. Depending on the projects’ different sizes and also the actual conditions like space, cost and etc, sometimes one or 2 steps are to be removed from the cycle, but the decanter centrifuges are always a must as the final step, especially in countries or regions where there are strict rules for environment protection.

Advantages of decanter centrifuges:

1. Decanter centrifuges are quite efficient for separating out the particles of certain diameters. For example, a middle sized decanter centrifuge can choose out the particles from 5 to 7 microns, while a high speed centrifuge with G force of 2000+ can remove particles from 2 to 5 microns.

2. Decanter centrifuges are highly automatic during operation comparing with other solutions like filter press machines. Meanwhile, centrifuges require lower man force consumption and smaller working space. And because of the high flow rate and efficient separation ability, they can reach a high treating capacity.

3. Decanter centrifuges consume less chemical. Any chemical or additional material comes at a cost and goes as a waste. When the particles are too small for the separating machine, polymers should be added, comparing with a filter press which plays similar role, a decanter centrifuge uses less polymer.

Welcome to consult with GN team for more information.


written by shale shaker \\ tags: , , ,

Nov 03

Just recent days, GN Solids Control as fabricated a batch of equipment for an environment protection company in outside China, including decanter centrifuge, centrifugal pumps and vacuum solids pump. In the market, GN Solids Control is always regarded a professional separation solution provider, in fact, besides the separation equipment and systems, GN Solids Control is also quite professional for providing conveying solutions. Centrifugal pump and vacuum solids pump are two of GN core products, especially among the various pumps.

GNSB series centrifugal pumps. Centrifugal pumps are quite popular in a drilling mud system to serve different functions, such as the trip tank pump, feeding pump for desander and desilter cones, the mixing pump to work together with venturi hoppers, and also the centrifuge feeding pump. A high performance centrifugal pump with longer service life could save lot of money for a drilling contractor. Besides, although the centrifugal pumps are of different sizes and models, the most differences are pump casing and impeller, other spare parts are always interchangeable. A reliable manufacturer could also give the convenience for an end user to save money on keeping spare parts. GN centrifugal pumps use hard alloy as pump casing and impeller material, and mechanical seals, and all spare parts interchangeable with Mission Magnum pumps, that’s why they are chosen by many clients in various industries even for environmental protection fields.

GNSP-10B is a middle sized vacuum pump in GN Vacuum Pump models. This is a kind of quite powerful pump which can transfer solids particles or even dry material. The only limit is the inlet size of the pump. They don’t need electricity drive, instead, it is fully hydraulic, and suitable for all explosive proof required conditions. GN has such pump models of 40 cbm/hr, 20 cbm/hr, 10 cbm/hr and 5 cbm/hr available. Except for the GNSP-40B, with 40cbm/hr capacity one, other pumps are all removable with wheels. This pump can be used for ferry cleaning, mud tank bottom clearance, cuttings transferring, animal waste transferring, and offshore platform cleaning and etc.
If you need more information, welcome to visit GN website.


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

Oct 27

The crude oil price is finally getting up gradually, and as the oil companies are picking up their business, the drilling companies are gaining more and more projects to work for. And they are choosing more and more carefully among the suppliers of equipment, in order to get the most cost-effective solutions to save more money at a low cost. GN Solids Control is one of the top manufactures in the world, and GN’s solutions are always welcomed by drilling companies.

Just weeks ago, GN had got order from another drilling company in China who purchased a GNCD930 Vertical cuttings dryer set for their waste management system along with a mud mixing hopper.

Drilling waste could become 2 kinds: the drilling liquid and drilling cuttings. Drilling liquid means when the drilling mud has been use for a while, when there are extra fine particles in the mud, the fluids need to be treated. And drilling cuttings treatment means the drilling cuttings discharged by the shaker.

Shakers are efficient for capacity, but their discharges are always too wet. In order to recycle more mud and meanwhile to transport cuttings easier, the contractors always invite in the cuttings treatment machines. For oil based mud, there is always a vertical cuttings dryer.

A complete cuttings treatment system for OBM:

1. Screw conveyors or other equipment for transferring cuttings from shaker discharge pit to the vertical cuttings dryer. Normally there are at least 2 screw conveyors to be used, one for receiving cuttings, the other for feeding the vertical cuttings dryer. GNSC series screw conveyors have flexible lengths and diameters to meet various needs.

2. GNCD Vertical cuttings dryer is specially designed for OBM cuttings treatment. It can reduce OOC to below 0.05%, and because it is equipped by a flushing device, there is rare chances to block the basket openings.

3. The fluids falls from the vertical cuttings dryer to a catch tank in between cuttings dryer and a high speed centrifuge and then fed to a GNLW363 high speed centrifuge to remove the fine particles inside the liquid. Then more dry cuttings are collected for disposal and expensive drilling fluids are collected for reuse.

Welcome to contact GN for more information.


written by shale shaker

Jun 27

As leading separation solution provider and leading manufacturer for decanter centrifuges in China, each year, GN Solids Control makes and sells around 200 sets of decanter centrifuges. Those centrifuges are mostly used in oil and gas industry like the solids control systems, waste management systems, oily sludge separation systems and large TBM projects. But in fact, the decanter centrifuges has even wider applications than the above mentioned ones. For example, in the food industry, beverage industry, edible oil industry and waste water industry. And just recently, some clients are using GN’s decanter centrifuges in power plant and it the performance was proved to be satisfactory.

Video for GN Centrifuges in power plant
Those decanter centrifuges are of big bowl centrifuges with bowl diameter of 18 inch. Same as other GN centrifuges models, this centrifuge model:

  1. use duplex stainless steel as the bowl material, and
  2. for the impeller protection and solids discharge ports, GN uses tungsten carbide tiles and special material ports for protection.
  3. GN also uses genuine SKF bearings for the centrifuges’ stable performance and longer service life.
  4. Details cannot be neglected, during transportation, GN use screws for jacking the bowls from outside, in order to reduce the load onto bearings.
  5. And the speeding up rods are used to enhance the capacity of centrifuge. Also some slots on impeller for the liquid to flow faster.

For the centrifuges with 18 inch diameter bowls, GN has different models available, with different bowl lengths, and the bowl length diameter ratios are respectively 2, 3 and 4. They are designed for different applications. And also the ones bigger and smaller than 18 inch ones, like the 14 inch bowl ones, there are also 3 and 4 as bowl length diameter ratio available, and also 22 inch ones.
The largest decanter centrifuge GN has is up to 30 inch bowls, while the smallest is 9 inch bowls.
For more information, welcome to contact GN directly.


written by shale shaker

Jun 27

This picture with 2 sets of customized mud cleaners are for a recent project. And after being taken this picture, those 2 sets of mud cleaners will be shipped out to its owner, an offshore drilling contractor. Sure they will serve a perfect work for its owners.
Among the oil and gas drilling projects, we can divide the drilling into land rigs and offshore drillings two kinds. Both of them has higher standard than other drilling works, cause they always request for Explosive Proof standard equipment. And comparing with land rig drilling works, the offshore drillings are of higher standards because of its limited space on the offshore platform. Therefore, the offshore projects always request for higher explosive proof standards (mostly ATEX ZONE 1), more compact foot print and easier and safer lifting pads for the equipment (DNV 2.7 standards).
It is not the first time that GN Solids Control has provided such equipment for offshore projects. Before, GN has provided the shale shakers, decanter centrifuges, vertical cuttings dryers to offshore projects.

This mud cleaner has 3 desander cones and 16 desilter cones. And those cones are playing roles as the 2nd step separation and 3rd step separation, respectively for separating our particles of 40 microns and 20 microns. And there are 2 centrifugal pumps for feeding the desander and desilter cones. There is a underflow shaker of 3 pcs of screens used for drying the discharged solids phase from the desander and desilter cones. The shaker has a total screen area of 2.6m2. For this mud cleaner, and all of other shale shakers and mud cleaners, GN provide high quality composite material shaker screens. And in order to reach the standards for offshore, a special lifting frame is added to the mud cleaner for suitable lifting pads for offshore rigs.h

For more information, welcome to contact GN Solids Control freely.


written by shale shaker