Aug 10

The augers are also called the screw conveyors, they are used in GN drilling cuttings waste management system as a matching equipment alongside with vertical cuttings dryers and decanter centrifuges.
In some rig sites, it is requested by the law that for each drilling rig, there must be a set of drilling cuttings waste management system, and totally in the rig site, there should be at least 2 augers: first one is below the discharge chutes of shale shakers, desander cones and desilter cones, that is used to collect the cuttings. Second one is used as a sloping angle to transfer the cuttings from the first one to the vertical cuttings dryer. In a word, the augers could be positioned sloping or horizontal for different destinations. In a word, GNSC screw conveyors could work in a group or singly, and they could be used for mixing, allocating, dewatering, discharging and etc.

gn augers

As an essential part of a waste management system, in order to well match the other equipment and easy for transportation and locating, all GN screw conveyor models are designed in same length sections, each of 12 ft. And they are of different diameters for providing different transferring capacities. There are 10 inch diameters, 12 inch diameters, 14 inch diameters and 16 inch diameters. In this condition, most of spare parts are interchangeable, which reduced the spare parts cost and enhanced the convenience for the end users. GNSC series screw conveyors are using the wear proof material for a obviously longer service life than its peers’.
GNSC series screw conveyors are not only used in the drilling cuttings waste management systems, they are also quite widely used in construction, chemical, power plants, coal mining and other industries. In some customized conditions, GN could also add the insolation layer to the augers to keep the temperature at a certain range.
For more information, welcome to contact GN directly.

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

Jul 25

After being developed from a solids control manufacturer and focusing on only high quality product manufacturing, GN Solids Control has become more like a separation professional and their salesroom is more and more occupied by some more widely used separation equipment which are suitable for more industries covering the oil and gas solids control, waste management, oily sludge separation, mining, TBM, HDD, food industry and also waste water separation.
Decanter centrifuge is quite an important equipment for the separation work. For example, a middle speed centrifuge could separate out particles from 5 to 8 microns like the expensive barite in the drilling mud, while a high speed decanter centrifuge could separate out the cuttings from 2 to 5 microns. With help of a chemical dosing system, the even smaller particles could be separated out together with a flocculation unit.

GN Hydraulic centrifuge

GN Hydraulic centrifuge

Comparing with other separation equipment, a centrifuge has many advantages like continuous operation, easy for maintenance and requesting less chemical components to be invited. GN has a full range of decanter centrifuges with different sizes, including 9 inch diameter bowl, with length-diameter ratio of 3 and 4 ( long or longer), 14 inch diameter bowl, 18 inch diameter bowl and 22 inch ones, they all have models of 3 or 4 as length-diameter ratios. And GN also has 30 inch diameter bowl decanter centrifuge, with a bowl length- diameter up to 4.
Among all those models, the 14 inch bowl models are most popular and economic, which are suitable for many applications. And for this model, GN has also hydraulic control model for option. Recently, one set of hydraulic decanter centrifuge will be shipped to an oversea customer, and it will be used for a big oil drilling company. Meanwhile, some more decanter centrifuges are being built for a safe stock and delivery to clients.

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Jul 25

In practice of solids control industry, mostly used shaker types are single deck shakers. But as the development of the allocations, there are fewer desander and desilters to be used, while more and more shakers are being chosen as replacement of desander and desilters by using finer screen meshes. A double deck shaker or a set of double deck shakers could provide both a large treating capacity and a good separating result.

GN Double Deck Shaker

GN double deck shaker

GNZS706F series double deck shakers are widely used in such conditions. It has 2 layers of shaker deck, the upper deck is kind of scalping deck, with 2 pcs of shaker screens, each with dimension of 750mm by 900mm, which is also the shaker screen size of a mini shaker GN Solids Control always makes. The lower deck is same as the most popular model GNZS703 series shakers, using screens with size 700mm by 1250mm, providing a total screen area as 1.35m2 of upper deck while 2.63m2 of lower deck. The upper deck uses coarse screens as the first step of separation, while the second deck uses finer screens to separate out the smaller cuttings. GN could locate them as double-shaker set or tri-shaker set sharing one mud distributor to serve for different treating capacities. Both smaller and bigger screens are made by GN Solids Control, with composite material frame for a larger conductance, longer service life and a safer usage.
By using 2 sets of high G force vibrating motors each of 1.94kw, the double deck shaker has a vibration G force up to 8.0G, and the stainless steel made shaker deck design well endured the high vibration with strong structure.
Besides double deck shaker GNZS706, GN Solids Control has a complete series of shale shakers, including the 2, 3 or 4 screens shakers like GNZS752, GNZS703 and GNZS594. For the latter 2 models, GN also has high-G drying shaker available with hopper feeding and larger G force. Except for the oil and gas solids control, GN shakers are also widely used for HDD, TBM, pipe jacking and other drilling works.

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Jul 12

Just not long ago, GN Solids Control who owns are quite professional R&D team in solids control industry, has developed and got patented of a series of ViST Vacuum Shakers. It would be a new page of solids control industry, because the ViST vacuum shaker will greatly reduce the drilling cutting proportion and enhance the treating performance during solids control.
Here is the working video of GN ViST Vacuum Shaker.
Here are the main parameters of GN ViST vacuum shaker:
1. Pressure of air source: 0.7-1.0 Mpa, equal to 100 to 150 psi
2. Air consumption: 4.5 cbm/min, equal to 160CFM
3. Matching shaker quantity: 2 or 3 sets
4. Suitable mud: all types of mud including SBM, OBM and WBM
5. Mud recycling ratio: 30 to 50 percentage
6. Mud temperature from minus 15 degrees to 85 degrees centigrade
7. Control type: automatic pneumatic control
8. No electrical power needed

Features and advantages of GN ViST Vacuum Shaker:
1. Wide application for all mud type including WBM, OBM and SBM.
2. It is suitable for both land rigs and offshore rigs, to enhance the working efficiency of the shake shakers, to recycle the drilling fluid to the most while discharge the cuttings to the least.
3. A ViST shaker could replace the drying shaker at a lower cost comparing with drying shaker.
4. Small footprint, even no extra space needed when added onto existing shakers, which is very important for offshore conditions.
5. Easy for installation for both GN’s own shakers and other brands’ shakers.
6. By using a ViST devise, the solids control shale shaker can use shaker screens with larger API number without leaking, in order to enhance the treating efficiency.
7. By discharging dryer cuttings, it would be easier for transport or discharge the drilling cuttings.
8. Easy to be operated by one operator only.
For more information, welcome to contact GN Solids Control directly.

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written by shale shaker \\ tags: , , ,

Jul 05

Only in the first half of year, GN Solids Control has delivered to India more than 5 sets of mud recycling systems for the trenchless projects, 2 month ago, GN delivered 3 sets of customized 600GPM Mud recycling systems, and this time, which GN Solids Control has provided was a complete set of 1000GPM Mud Recycling System, including:

gn mud system

1. GNZS703F-DZ shale shaker. This is the best seller shaker model among GN shale shakers especially for the non oil gas industry. In this shaker design, GN has 5 patents like the unique sealing design, the gear unit for changing the screens and etc. The G force of this shaker model is upto 7.5G, adjustable. And shaker deck angle could be adjusted from minus 2 degree to plus 5 degree for a good performance. The shaker deck is made of stainless steel, for a stronger structure. It has 3 pieces of composite material frame screens, which gives 2.63 square meter screen area.
For the same model, GN has also high-G drying shaker available, with G force up to 8.5G.
2. GNZJ703F series desander and desilters. In this system, because of enough space and enough budget, the end user chose the desander and desilter design alongside the shale shakers. The desander has 2 of 10 inch cones and an underflow shaker, while the desilter has 12 of 4 inch cones with underflow shaker. Both of the underflow shakers are same as GNZS703, with interchangeable shaker screens, of course, different API numbers.
3. Mixing unit is equipped for this mud system, too. Both the mud mixing hopper and mud mixing pump are fabricated by GN Solids Control.
4. GNSB series centrifugal pumps are also one of the core products GN produces and provides. All GN centrifugal pumps, including individual parts are fully interchangeable with Mission Magnum centrifugal pump. They are widely used for the desander or desilter cone feeding, for the mixing purpose, or serve as charging pumps and transfer pumps in trip tanks.
Welcome to visit GN website for more information.

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

Jun 26

Centrifuges are quite popular in separation industries, in oil and gas solids control, in drilling cuttings waste management, and in oily sludge separation projects. It is perfect solution for separating out particles from 2 microns to 5 microns. The centrifuges are playing more and more important role. But still, it is more difficult to operate the centrifuge well and let the centrifuge to work more efficiently.

GN HIGH SPEED CENTRIFUGE WITH SKID

GN HIGH SPEED CENTRIFUGE WITH SKID

There are some suggestions to help improving the centrifuges’ performance:
1. Before using the decanter centrifuge, make sure the material which enters the centrifuge are not so big for the centrifuges, in order to avoid blocking of centrifuges. For instance, a high speed centrifuge is capable to separate out particles from 2 microns to 5 microns. In practice, particles no larger than 2mm could enter the centrifuges. So it is suggested to use a shaker unit before the centrifuge.
2. How about when the particles are too small? When there are so many extra fine particles, it would be difficult for the centrifuge to separate the particles out. In this case, a chemical dosing unit is invited before the centrifuge. By adding flocculant into the material, the extra particles flocculate into bigger ones in order to be separated by centrifuge.
3. If the material is of too high viscosity, some polymers fed by the chemical dosing unit into the material, to lower down the viscosity. Then the separation result would be much enhanced.
4. Confirm the material content before choosing a suitable bowl rotating speed and a suitable differential speed. The material content information includes: solids content percentage, the distribution of each particle size, and etc. Such information helps the operator to adjust the centrifuge parameters.
GN Solids Control is quite professional in centrifuge design and manufacturing, GN centrifuge sizes range from 9 inch bowl to 30 inch bowl. Pls contact GN for consultancy.

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