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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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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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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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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Oct 23

In order to meet customers’ request and to help solve the problems faced in front of customers from the more and more strict environmental protection rules, GN Solids Control designed and put into market a comprehensive design for the oily sludge separation unit, and now GN Solids Control is leading in this industry.
In recent 3 years, GN Solids Control has customized several sets of similar systems, and such systems are being used in many different countries both in domestic China and overseas. It is widely used for treating the discharged slurry and sands from crude oil tank cleaning, oily waste discharged from refineries, and the viscosity oily waste from solids control for oil and gas drilling. It helps to reduce the cost for waste transportation and oil recycle, and gained good comments from under users.

OILY SLUDGE SEPARATION

A complete system is combined by several sections:
1. Pre heating and pre mixing system. In this system, a mixing tank with heating facilities are being employed. A chemical dosing system is used for adding some polymer or something else into the oily sludge and heating is used for reducing the viscosity. Later, the sludge is to be treated by a shale shaker, by which the large particles are separated out.
2. A high speed decanter centrifuge is used in next step for treating out the fine particles from the liquid. Floating unit is kind of oil water separation, and the light of weight oil will float on surface of liquid and it would be scraped out to an oil tank. The settled down particles would be drained from bottom of the IPC unit.
3. A disc centrifuge is used to separate out the small amount of particles from the liquid, and further separate the oil from water. Then the water flows into the water tank, while oil flows into the oil tank.
In the complete system, by using the complicated manifold and valves, the end user can bypass or invite into loop some equipment based on the sludge’s condition.

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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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