Month: May 2020

The vertical cuttings dryer and decanter centrifuge should be lay on the telescopic skid for better performance and convenient operation. Recently we shipped several units of telescopic skid mounted vertical cuttings dryer and decanter centrifuge to international oilfield service company, they repeat the same order since 2014, and they are satisfied with the equipments performance, quality and our after sales service.

When the vertical G dryer and decanter centrifuge is installed on the mud tank, we will provide simple support frame legs, and the solids discharge trough is also an option if required.
Vertical cuttings dryer is an ideal equipment to treat the oil based drilling cuttings and SOBM, when used for water based drilling cuttings, high G drying shaker can work better and with higher cost performance ratio. The cuttings discharged from vertical cuttings dryer with oil content in the cuttings is below 5%, in some countries, it is permitted to be disposal directly or for landfill. In some other countries, it needs further treatment such as burning, TDU, Biodegradation or injection. The treated fluids will flow to an intermediate tank, then decanter centrifuge feeding pump will transfer the fluids to VFD decanter centrifuge to separate more fine solids from the fluids, the treated fluids will be collected by an centrifuge tank and transfer to active mud tank system for reuse or chemical mixing tank to prepare for new drilling fluids. The drilling waste management system is environmental friendly system to reduce the drilling waste and reduce the harmful to the earth, also can recycle more useful drilling fluids for the customer and save the drilling cost, especially in some countries the zero discharge system is compulsory, otherwise they cannot get permit for drilling project.

For more solutions of OBM, SOBM, WBM drilling waste management solution, pls contact with GN solids control.

Recently we shipped shale shaker and decanter centrifuge to International Environmental Company. They use GN equipments to treat the slurry collected from different recycling company, including metal, glass, silt, sand, plastic etc. By using GN equipment, they succeeded to separate out those valuable info such as metals, glass or silt to resell. The technical configuration is as below：

1）Before feeding to shale shaker, the operator use a crusher to broke all the materials recycled from different place into small size, otherwise the shaker screens will be damaged very quickly, and make it easier transferred by the pump. 4 panel drying shale shaker to separate coarse solids from slurry, the fluids dropped into the mud tank. The centrifugal pump feed the fluids to desander cone and desilter cone.

2) 4 panel mud cleaner to separate the fine solids from fluids, the desander cone separation cut point is 45 microns, the desilter cone separation cut point is 25 microns, the hydrocyclones material is 100% PU material for longer working life. The clean fluids drop into the mud tank, the decanter centrifuge feeding pump transfer the clean fluids to decanter centrifuge for further treatment.
3) GNLW553C-VFD decanter centrifuge with chemical dosing system to separate ultra fine solids up to 1 microns. Since adding the flocculants in the slurry will reduce the treating capacity of decanter centrifuge a lot, to meet the required treating capacity of the project, a big bowl big treating capacity decanter centrifuge should be applied.
The centrifuge discharged solids can be collected by waste bag or waste collection box, if the user want to get much drier solids, press filter can be applied.

As a professional manufacturer of shale shaker, mud cleaner and decanter centrifuge in China, our equipments can be applied not only for oil & gas industry, it can be also used for solids liquid separation project of environmental protection project.

Drilling waste management equipments for pitless solution including vertical cuttings dryer, high G drying shaker, VFD decanter centrifuge, screw conveyor, sludge vacuum pump, screw pump, etc. Recently GN solids control shipped one batch of drilling waste management equipments to International oilfield service company. The client collect the drilling waste from onshore and offshore rig site and dump the drilling waste together, with both water based mud and oil based mud drilling waste. The operator need one drilling waste management system which can treat both water based mud and oil based mud.

The working principal is as below:
The sludge vacuum pump pick up the drilling waste to the collection hopper of screw conveyor, which will transfer the drilling waste to high G drying shaker and vertical cuttings dryer. If there is no vacuum pump, an auger system to collect all the drilling waste from the rig solids control system is necessary. The cuttings are separated out by high G drying shaker and vertical cuttings dryer and collected by skips, the fluids are dropped into the mud tank, the centrifuge feeding pump transfer the clean fluids to decanter centrifuge to separate the fine solids, the cut point is 2~5 microns. The clean fluids cn be reused for drilling rig and prepare for new fluids. By using proper chemicals, the separation cut point is up to 1 microns, most of the solids can be separated out.

The pitless solution or zero discharge system is consist of solids control system and drilling waste management system, the solids control system is working to reduce the discharged drilling waste, which will be collected by screw conveyor system and transferred to drilling cuttings treatment system. The discharged solids can be collected by waste container for land fill or injection. The whole process is environmental friendly design without needing a waste pit on the ground.

As one of the high speed decanter centrifuge manufacturer in China, GN solids control can produce different size decanter centrifuge for different applications from 9 inch bowl to 30 inch bowl size. Recently one batch of high speed decanter centrifuge are shipped to Russia, the model is GNLW363CG, which is the best seller among all the centrifuge models.

The features of GN high speed decanter centrifuge:
1) Centrifuge bowl straight cone is made of duplex stainless steel 2304, which is much better than SS316 & SS304, the taper cone of the bowl and other components are made of stainless steel 316L.
2) The screw is made of stainless steel for better anti-corrosion, which is heat treatment up to 1000 degree, the opening screw propeller design increase the treating capacity

3) The bowl collection box is made of SS304 for better anti-corrosion, the air spring design allow one worker to open the collection box easily without damage their body.
4) The SKF brand bearing ensure the working life for reliable operation.
5) The screw propeller is protected by tungsten carbide tiles for longer working life, which is interchangeable if damaged.
The max speed of the high speed decanter centrifuge can be up to 3900 rpm, the normal operation speed is 3200 rpm. The max G force is up to 3063G, and the normal G force is 2062G. The decanter centrifuge is used to separate low gravity solids from the drilling fluids ( both for water based mud and oil based mud), we have pulley set with middle speed which can be replaced for barite recovery. The client can use VFD decanter centrifuge if they do not want to replace different speed pulley, the VFD control panel can adjust the speed of the decanter centrifuge for both LGS separation and barite recovery.