The decanter centrifuge is used in weighted mud applications to recover valuable weighting material from mud which must be discharged due to unacceptable colloidal solids content. The decanter centrifuge settles out barite and coarse drilled solids which are returned to the active mud system to maintain density. The relatively clean centrate containing liquid and colloidal solids is discarded. These colloidal solids cause many drilling fluid problems, such as high surge/swab pressures and ECD, differential sticking and high chemical costs. Usually the value of the weighting agent in these mud systems makes it economic to recover the weighting agent from the whole mud before it is discarded.Ideally, the barite recovery process should remove only colloidal solids without losing the larger particle sizes used as weighting material.
Discarding potentially reusable barite increases barite use and drilling fluid cost. Barite losses can be reduced when the centrifuge makes the maximum liquid/solids separation. As discussed in the previous section, this means operating the decanter centrifuge at high G-force.
- Details
-
Published: 22 December 2013
Cutting-edge research and product development is the soul of GN. Through trial and error, GN new generation decanter centrifuges finally come out. The mechanical design and electric control system are updated to a new high level.
Compact Mechanical Design
The primary motor and the secondary motor set at the one side and leave much room for operator to get access to rotating assembly. Collection box cover supporting system is installed with which much labor can be saved when opening the collection box and doing the maintenance.
VFD PLC Control Panel
In addition to the normal VFD (Variable Frequency Drive) Centrifuge. GN also developed DECANTER CENTRIFUGE controlled and monitored by a Programmable Logic Controller (PLC). Compared to other centrifuges, it requires fewer operating personnel and features automatic adjustment for different operating conditions.
- Details
-
Published: 16 December 2013
GN decanter centrifuge was shown at Colombia Oil and Gas 2013 (XV Congreso Colombiano de Petróleo y Gas 2013). This provides a good chance for Latin America customers to take a close look at GN efficient centrifuge.
GN Decanter Centrifuge at Colombia Oil and Gas 2013
- Details
-
Published: 07 December 2013
GNLW223 is purpose built decanter centrifuge for diamond and mining drilling which requires a small amount of drilling mud and smallest footprint as possible for the drilling equipment. The typical treating capacity of this unit is 26 GPM (6 cbm/h). The g-force can reach to 1777 at 3800RPM and 2492 at 4500RPM.
Recently, we have finished the production of a batch of GNLW223 decanter centrifuge. It is 578kg without motor on. It can be easily torn down into pieces for helicopter transport to remote areas.
- Details
-
Published: 01 December 2013
A complete set of GNLW363G decanter centrifuge was on display at ADIPEC 2013. This is the second time GN brought the decanter centrifuge there for the exhibition.The centrifuge unit had been ordered before it shipped to the exhibition hall.
GN centrifuge is specifically designed to process drilling mud, it is more durable and stable with Screw Conveyer protected Tungsten Carbide Tile and Discharge Ports by tungsten carbon allay ring. High fluid recovery rates and efficient solids control can done to meet the highest environmental standards. GNLW series decanter centrifuge stand out from other centrifuge manufacturers due to its high quality material, high-accuracy machining and reasonable price.
VFD and PLC control decanter centrifuge are also available.
- Details
-
Published: 23 November 2013
Two units of GNLW553VFD decanter centrifuge and feed pumps are packed for delivery to Nigeria. The two units will be installed following vertical cuttings dryer in drill cuttings treatment system.
GNLW553VFD is “Soft Start†Variable Speed Drive Centrifuge with high volume processing up to 400GPM. The VFD positive pressurized cabinet enables low amperage start-ups and smoother rpm changes to minimise amp drain in the motor.
The single screw pump is an ideal transfer pump for feeding to decanter centrifuge without shearing or agitating the drilling mud. If you'd like to learn more about drilling waste management equipment, please view at www.gnsolidscontrol.com
- Details
-
Published: 09 November 2013