Tag Archives: offshore Decanter Centrifuge

18 Inch Decanter Centrifuge and Mud Agitator for Offshore Drilling Company

Recently one batch of 18 inch decanter centrifuges and mud agitators are ready for shipment to Offshore drilling company.

The decanter centrifuge with 4 lifting pads which meets the lifting requirement of offshore drilling company. The centrifuge pulley protection cover is painted with safety mark. The main motor and back drive motor comply with ATEX explosion proof standard for offshore used. The 18 inch decanter centrifuge model number is GNLW453, the bowl diameter is 18inch (450mm), bowl length is 61 inch (1540mm), the typical treating capacity is 264gpm (60m3/h) for drilling fluids. The max bowl speed is 3200rpm, the typical bowl speed is up to 2800rpm, the max G force is 2578G, typical G force is 1973G, the main motor is 55KW, the back drive motor is 22KW. The recommend feeding pump motor is 15KW. The mechanical separation cut point is 2 ~5 microns.

Features of offshore used decanter centrifuge:
1) Compact structure, smaller footprint, lifting pad to meet offshore lifting standard
2) ATEX certified motor and control panel to meet offshore use
3) The screw is protected by tungsten carbide tiles for longer life and easy maintenance
4) The bowl is made of duplex stainless steel SS2304 by centrifugal casting
5) The solids discharge port and fluids distribution port is protected by tungsten carbide inserts for wear resistance.
The coupler type mud agitator consists of C face ATEX explosion proof motor, helical bevel heavy duty gearbox, coupler painted with yellow color, offshore standard skid, agitator shaft, impeller, stabilizer. It is suitable for oil based mud , water based mud and synthetic based mud. Based on mud tank dimension, we will use different size impeller.

Except for coupling connection mud agitator, GN also produce direct connection mud agitator with helical bevel type gearbox, We can provide different models mud agitators for your different applications.

GN Solids Control Equipment Keep pace with Faster Drilling

In order to meet with today faster drilling requirement, we keep improving the drilling fluids design including bigger capacity of decanter centrifuge, high capacity shaker with unique shaker screen design and streamlined process. Under this situation, GN displays a series of solids control equipment including shale shaker and decanter centrifuge.


GN Vibration Screen Shaker


GN drying Shakerwas designed with a two-motor system that can operate the linear motion mode, allowing the operator to tune the G-force down and up depending on the drilling fluids conditions. It provides operator flexible way to make the adjustments based on the condition and volume of drilling fluids across the shaker surface. The shaker can behandled with high G-force for highflow rate but can be turned down to a less vibrating mode for cutting solids flow and volume.GN shakers were recently deployed to many drilling site.


GN Solids Control Decanter Centrifuge

363 Decanter Centrifuge 2

GN offers different size decanter centrifuges including 14inch 18 inch and 22 inch. We have more than 30 sets 14 inch bowl decanter centrifuge working in the Nigeria, more than 20 sets of 14 inch bowl centrifugein the Argentina.GN decanter centrifuge provides the most reliable working performance for oil and gas drilling industry. Regarding to different requirement, we also have different model to deal with.

  1. Barite Recovery.


We utilize either GNLW 452(18 inch) under the 1800RPM or GNLW 363(14inch) under the 2200 RPM to recovery the barite.


2. Generally Solids Control or High Gravity Solids


We use GNLW 452(18 inch)or GNLW 363(14inch) under the 2700 RPM to recovery high gravity solids. Typically, we also use GNLW 363(14inch) under the 2700 RPM matching with GN vertical cutting dryer for waste management


  1. Low Gravity Solids


We normally utilize the GNLW 363(14inch) under the 3200 RPM which effectively remove solids


If you have any solids control issues, please feel free to contact with me.

GN Fixed High Speed Decanter Centrifuge for Abu Dhabi Oil Show for Sale

Abu Dhabi Oil Show is one of the most important oil shows in world, GN Solids America, since its establishment by year 2007, has attended to this event for several times, always took with them the most popular equipments. Some GN customer got to know GN in Abu Dhabi and later visited GN company for further cooperation.


This year, for year 2014, GN also have a booth there, and this time, GN is planning to bring the most popular model GNLW363 Decanter Centrifuge, fixed speed decanter centrifuge with a high speed.


Comparing with VFD Control GNLW363, which shares same series model as the one for oil show, the fixed speed one has its common points and its own features.

High speed decanter centrifuge

They are in common in those features:

  1. Same bowl diameter: 14 inch diameter, most popular size world widely.
  2. SKF bearings original Sweden. GN always choose best parts for its mud cleaner.
  3. Same bowl material SS2205 for main part of bowl and SS316 for other bowl parts.
  4. Tungsten carbide tiles for impeller protection, better for wearing and easier for later dynamic balancing
  5. Tungsten carbide tiles for solids discharge ports.
  6. Easily adjustable liquid discharge ports
  7. High speed it could reach about 3200RPM.
  8. Able to separate out 2-5microns particles.

……..whatsoever, both fixed speeded and VFD control GNLW363 has exactly same main body of centrifuges.


Why choose fixed speed GNLW363?

A shaker screen is easy to transport and installation. The fixed speed control panel is installed on same frame of the centrifuge. Comparing with the one with a VFD control panel, this one occupies less space.

If the site condition and mud composition is stable and operator clearly knows which speed is more frequently used, it is better for one to choose a fixed speeded model. It also saves the cost for purchasing and later maintenance.


GN Solids America has available several options for this model, and the one for the Abu Dhabi Oil Show will be on sale to customers with sea freight to Abu Dhabi free of charge.