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.

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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.

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

Jan 06

There are several different types of drilling muds used for different drilling conditions, mainly divided into 3 types, the water based mud, oil based mud and SBM. The mostly used ones are WBM and OBM.

For deep well drillings, the OBM is most common solution. Considering it’s components, the oil based mud is more expensive than water based mud, that’s why as much as mud should be recovered from the waste. Meanwhile, the OBM is more harmful to the environment if the cuttings from drillings are not well treated before discharge. As leading manufacturer and solution provider, GN Solids Control has designed and supplied to many different end users with its professional solution for drilling cuttings treatment. For oil base mud cuttings, recently, another new set of such system was successfully use in CNPC, one of the 3 largest oil companies in China, both their engineers and operators are giving good comments.

cuttings treatment system

This system includes:

1. GNCD930 vertical cuttings dryer, which is specially designed for treating the oil based cuttings, it is like a washing machine. By using screen baskets of different mesh sizes per cuttings condition, and after the vertical cuttings dryer, the oil on cutting could be reduced to below 0.5%.

2. The second treating machine is a high speed decanter centrifuge. In this project, the end user chose GNLW363CG-VFD, a 14 inch diameter bowl decanter centrifuge, with variable speed up to 3200RPM. It is used for further treatment of drilling fluid discharged from the vertical cuttings dryer.

3. Transferring equipment. For transferring the drilling cuttings, GN has different suggestions based on customers’ jobsite layout and cuttings location. Normally, if the cuttings treatment system is alongside the rig and used for treating the cuttings direct from solids control system, screw conveyor is good choice to collect cuttings from shaker and transfer to hopper of vertical cuttings dryer. If the wed cuttings are from a pit or pond, we recommend GNSP vacuum pump.

For more information, welcome to contact GN sales team directly.

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written by shale shaker \\ tags: , ,

Dec 26

As long as there is a drilling project, there must be a solids control system coming along, no matter it is for land rig drilling or offshore drilling far in the oceans, an efficient solids control system are vital for the drilling fluids recycling and drilling cuttings transportation, especially for the offshores.

GN SHAKER

GN SHAKER AND MUD CLEANER FOR OFFSHORE

In offshore projects, cause of the distance from the land, all material must be used to the most, the most liquid should be reused and least cuttings to be transported back to land. The shaker is used for separating out the most of solids, for handling the heaviest burden, the high performance and strong structure of shaker is quite important. Following features of GNZS series shakers ensures the shaker’s quality and performance:

1. A high G force up to 8.5G powered by Oli Vibrator for a good separation work.

2. Stainless steel shaker deck is stronger for handling the high G force.

3. Patent design of rubber sealing, effectively avoided the leaking of mud.

4. Two different models, with 3 or 4 pieces of shaker screens, providing large treating capacity of 120cbm/hr or 140cbm/hr.

5. Special patented way for changing screens, safe and human oriented.

Talking about shaker screens, as is known to all, shaker screens’ quality greatly affects the shaker’s performance. That’s why GN has built up a separate screen factory for better control over screen quality. In this shaker screen factory, GN is the first and only one who uses robot for welding and cutting, and GN’s screens are in accordance with API RP 13C, an accurate API number and a high conductance with a good screen frame structure made of composite material.

For more information, welcome to contact GN Solids Control directly and welcome to visit GN factory at any time.

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

Nov 21

GN BIG BOWL CENTRIFUGE

By far, the decanter centrifuge is a quite efficient equipment for separating the solids from the liquid, which is widely used in many industries form the winery, plant oil to the energy industry like the oil and gas drilling, waste management, cuttings treatment and oily sludge separation. Not long ago, 2 sets of GNLW764-VFD centrifuges were delivered to a desert jobsite for a coal mine project, for washing the coals.
When a place is remote, especially in a desert place, all resources are more precious than usual. In that project, the decanter centrifuges are only a part of the whole project but are playing an important role. They are requested to run continuously and to treat around 100 cubic meter material in each hour, in order to save cost by two means: one is to collect the limited water to be reused in next washing procedure, the second is to dry the coal and finally change it into money. The more water to be recycled, the lower cost the project pay for, and the more coal to be collected, the more benefit the project earn from.
Decanter centrifuges are one of GN Solids Control’s core products, and GN has centrifuges for different applications, including: mining and other industry, oil gas drilling solids control and waste management for the cuttings and drilling mud, oily sludge separation works like the waste treatment in refinery and from tank cleaning, the animal waste treatment in farmlands, food industry like the plant oil and wineries.
In a word, an efficient decanter centrifuge helps the end user to cut cost, save money and increase the final products quality, like the purer liquid and drier solids. If you have such need for centrifuges or need more information about centrifuge, welcome to contact GN Solids Control for consultancy.

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

Oct 27

Last week, one international contactor for mining industry started their project in Australia, among the separation line, two green colored equipment were significantly shown. They are big bowl centrifuges from GN Solids Control, a leading manufacturer for industrial separating equipment manufacturer based in China.

GN Solids Control has been designing and producing the separating equipment like shale shakers, mud cleaners, decanter centrifuges, vertical cuttings dryers for many years. At first, the equipment are mainly used for the oil and gas drilling solids control systems, and later, as GN’s quickly increasing development of technology and producing capability, GN Solids Control has enlarged its centrifuge model range from 14 inch bowl to bigger ones and smaller ones. Those 2 sets of GNLW764A decanter centrifuges are till now the biggest sized centrifuges made by GN Solids Control, with a bowl diameter of 30 inch and a treating capacity up to 120cbm/hr.

Besides the giant bowl decanter centrifuge GNLW764A-VFD, GN Solids Control has various centrifuge models with size as small as 9 inch diameter bowl, up to 30 inch diameter bowl, including the 14 inch bowl , 18 inch bowl, 22 inch bowl and etc.

GNLW764

For each size, there are different models available per different bowl length diameter ratios. Normally the comparably longer bowl a centrifuge has, a cleaner separation result it could give. Among GNLW series decanter centrifuges, take the 18 inch bowl diameter as example, there are different ratios like 2, 3 and 4. GNLW452 is a stout shaped decanter centrifuge with middle speed and shorter bowl, which is mostly used for barite recovery in a solids control system based on the barite size and gravity. GNLW453 is a high speed centrifuge for waste management systems, or as the dewatering centrifuge, for fine particles. While the GNLW454 is quite suitable for waste water separation with a longer bowl up to 4 times of bowl diameter, around 61 inches.

GNLW764, the 30 inch bowl diameter centrifuge has a bowl length-diameter up to 4. And this giant could separate quite fine particles at a large capacity, even after a dewatering unit.

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written by shale shaker \\ tags: , ,