Monthly Archives: September 2019

One set of Mud recycling system for Domestic client

GN solids control shipped one set of mud recycling system for domestic client for drilling rig mud cleaning, the technical configuration is as below:
1) 2 sets of 3-panel shale shaker GNZS703F as first phase cleaning equipments with mud distribution box. The screen area is 2.73m2, each screen dimension is 700x1250mm, the screen locking method is by wedge and fixed by ratchet wrench. 2ea of 1.72KW vibration motor drived the shale shaker and provide G force up to 7.5G ( adjustable). The shaker deck bottom material is stainless steel for better corrosion resistant.


2) 1 set of desander GNZJ752-2S as second phase cleaning equipment, with 2ea of 10 inch PU material desander cone. The bottom shaker is 2 panel screens installed composite material shaker screens.
3) 1 set of desilter GNZJ752F-12N as the third phase cleaning equipment, with 12ea of 4 inch PU material desilter cone. The bottom shaker is with 2 panel composite material shaker screen.


4) 1 set of decanter centrifuge GNLW452 as barite recovery centrifuge, the normal operation speed is 1800rpm or 2200rpm. This is the 4th phase cleaning equipment with cut point 5~7 microns. The vertical installed submersible slurry pump as centrifuge feeding pump.
5) 3 sets of mud tanks as trip tank, active tank, intermediate tank, storage tank, mixing tank, the mud agitator and mud gun are installed on the mud tank for agitating the drilling fluids.
6) Mud tank accessories such as high position butterfly valve, drain cleaning gate, pipelines, flexible connector, man hole, walkways, handrails, stairs, hose, flanges, etc.
7) Explosion proof motor and control system to control all the electric motors and lightings.
This is a customized solids control system according to client’s requirement. If you have requirement for drilling fluids & drilling waste treatment solution, pls contact with GN Solid Control.

Drilling cuttings treatment system working for oil based drilling cuttings

GN after sales team come back from jobsite in Xinjiang for one set of drilling cuttings treatment system. The configuration is as below:
1) One set of GNCD930E vertical cuttings dryer to treat the oil remained in the cuttings below 5%. The discharged fluids will flow to the intermediate tank and the feed pump will transfer the clean fluids to the decanter centrifuge from the intermediate tank. After treated by GN VCD, the discharged solids can meet the disposal limit for most countries, it can be used for landfill. If not, the discharged solids can be treated by TDU to lower the oil below 1%. The client can use TDU directly for oil based drilling cuttings, but by using drilling waste management system prior to TDU will save power energy and diesel consumption a lot.


2) One set of VFD decanter centrifuge GNLW363C-VFD to separate the fine solids from the discharged fluids, the recovered fluids can be used to prepare for new drilling fluids and to be reused for drilling rig. The discharged solids will be back to the circulation or cuttings box for disposal.
3) One set of centrifuge feed pump and one set of vertical cuttings dryer flushing pump, both of them are installed on the package skid and they are positive displacement pump made by Germany Netzsch. The speed of the screw pump can be controlled in the VFD control panel to control the flow rate of the feeding capacity.


4) One set of GN standard mud tank skid, all the equipments are installed on the tank skid for convenient operation and transportation.
5) 2 sets of screw conveyor to transfer the drilling waste, one set is used to transfer the oil based drilling cuttings to vertical cuttings dryer top feeding port, one set is used to collect the discharge solids and transfer out to other area automatically.

Big bowl decanter centrifuge manufacturer in China

As one of the most professional big bowl decanter centrifuge in China, GN Solids Control recently shipped 2 units of biggest model decanter centrifuge to USA for construction slurry treatment. We can design and produce various size decanter centrifuge from 9 inch to 30 inch bowl with different treating capacity and different applications.

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The big bowl size decanter centrifuge with 30 inch( 760mm) bowl, the bowl length is 3328mm, the designed treating capacity is 528 gpm (120 m3/h) for the mud with 20% solids content. The max bowl speed is 2650rpm with max G force 3000G, the typical speed is 2200rpm with typical G force 2060G, the cut point is 2~5 microns. The differential speed is 5~28 rpm, the gearbox torque is 25000 N.M, gearbox ratio is 38:1, the main motor power is 160KW (217HP), the back drive motor power is 90KW (120HP). Considering the cost issue, we also recommend GNLW554EP-VFD for option, the bowl size is 22 inch ( 550 mm) and the bowl length is 91 inch (2310mm), with designed treating capacity 600gpm( 136m3/h) and the typical treating capacity is 480gpm (108m3/h), it can be used as waste water treatment, industrial waste treatment, chemical treatment, dewatering centrifuge and other slurry treatment.

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When the user need to treat big volume slurry, and the space and budget is limited, the big bowl big volume centrifuge is the ideal option compared to use several units of small decanter centrifuge.
We will install the decanter centrifuge on the telescopic skid for convenient operation, the chemical dosing unit can be applied to separate ultra fine solids to 1 microns and make the discharged solids drier to meet the disposal standard.
For more information of the big bowl decanter centrifuge, pls contact with GN sales engineer, we can design customized centrifuge solution according to the treated material conditions.