Month: August 2016

GN decanter centrifuge with tungsten alloy tiles screw conveyor can have a much longer lifetime with good working performance. The Ex-proof control panel with positive pressurized air can keep inside lower temperature, and keep it clean without dust and keep it dry; all the features make the centrifuge & VFD control panel good performance and less maintenance.

One client from Africa, they bought 2 batches decanter centrifuge from us in past 3 years. The client is local land rig drilling contractor with 7 land rigs. They use the centrifuge for solids control, each rig need two sets centrifuge, the client have their own centrifuge from us, and they also rent some centrifuges locally.

Recently, we have got news from the clients that they are doing some maintenance for the VFD control panel and are faced with some challenges.

• Challenge 1: the centrifuge cannot separate anything
• Challenge 2: the PLC control panel don’t display correct rotation speed value as reset
• Challenge 3: The centrifuge motor don’t rotate in correct direction

After several times discussion by email and by phones, we are clear that all the disorder is because of the electrical components in the VFD control panel which have been replaced by client is not working in correct mode. After we give instruction on how to adjust the Omren module components in the Control box, the centrifuge can work in correct mode as before.

The centrifuge motor rotation direction is also very important to the centrifuge performance. If the rotation direction is not correct, it will not remove solids and will not work normally. We have direction arrow in red stick on the motor end, it is much necessary for client to check the rotation direction before test the centrifuge.

Except for centrifuge, GN Solids Control also provide all line of solids control equipment, like shale shaker, mud cleaner, mud agitator, mud gun, shear pump, screw pump, slurry pump, mud tanks etc.

For drilling waste management, the products line including: vertical cuttings dryer, thermal desorption unit, fixation unit, screw conveyor etc.

With oil price going up, we just receive tender Invitation from Africa Client, even we don’t participate in overseas tender directly, we can share the news and this maybe a signal of local requirements is arising. The tender on solids control package including below parts;

1. Provision of Secondary Mud Recovery/Cuttings Dryer (either vertical or horizontal) with feed pump capable of obtaining less than 5% (50gm/kg) cuttings oil retention (COR).

GN response: all GN Vertical cuttings dryer are high standard equipment, which is equivalent to Swaco vertical cuttings dryer / CSI cuttings dryer. GN vertical cuttings dryer are working in many drilling rig site and show high performance.

GNCD930 series cuttings dryer have been working for Oil based mud cuttings treatment over 3 years, the OOC can be reduced to below 5%.

2. Provision of Low and High speed centrifuges with feed pumps for drilling fluids solids control to assist in obtaining less than 5% COR. The units shall have independent bowl and scroll speeds for processing the synthetic base fluid.

GN response: we can offer fixed speed low speed centrifuge / fixed speed high speed centrifuge. And we can offer variable speed centrifuge with PLC control panel, the client can get different speed for different application, much convenient for speed adjustment.

GNLW363CG premium centrifuge is the most popular model, the 14inch centrifuge is equivalent to Derrick DE1000 centrifuge or Swaco 518 centrifuges, much more cost-effective than US brand centrifuges.

Continue reading “GN Receive Solids Control package Tender Invitation from Africa”

GN Solids Control is professional leading manufacturer for different type centrifuge for different area applications, the centrifuge type including fixed speed centrifuge & variable speed centrifuge, high speed centrifuge and lower speed centrifuge, electrical motor drive centrifuge and fully hydraulic centrifuge, 2 phase centrifuge and 3 phase centrifuge, horizontal screw centrifuge and vertical scraper centrifuge or disc centrifuge etc. The application area including:

• Oil gas drilling mud treatment centrifuge (similar to HDD drilling mud centrifuge)
  Public works sewage sludge treatment
  Industry and mineral oil separation and clean
  Fool oil and fat extraction and separation
  Food and drinks, like fruit juice, vegetable juice, beer production and grape wine production

In public sewage sludge treatment, GN centrifuge can provide below functions.

1) Sludge concentration
Sludge concentration refers to the residual sludge generated in the organic phase before being pumped into the digestive tower, the dry matter content from g/ltr. 5-10 concentration to 5 to 8%. In this process, the sludge volume will be reduced by 95% – 90.
The horizontal screw centrifuge is used for dewatering of sludge. The most critical point of the sludge transportation, recycling, landfill or burning after dewatering is the most important point to be as dry as possible. Other key factors and save energy, polymer and water consumption, and reduce the demand for spare parts.

2) New use of starch polymers for sludge thickening
Horizontal screw centrifuge consist of all the advantages of different type centrifuges, can ensure the best concentration effect even if the starch polymer is added in the sludge. Through the centrifugal force, the rest sludge will be concentrated to a set of sludge, controllable concentration. Starch polymers are needed to ensure that the separation degree is greater than 95% when the concentration of the solution is concentrated. In this process, only use a very small amount of polymer, while the minimum energy consumption to achieve high.

3) Environmental Protection Dredging Engineering
Compared with other mechanical dewatering equipment, Decanter centrifuge can give continuous operation, the dehydrated mud cake containing a high rate of solid; the recovery rate can reach more than 95%. The system has the advantages of small occupation area, and can achieve the full closed operation, operation environment is clean and hygienic, especially suitable to do in the densely populated area of town river sludge dewatering operation, can effectively reduce sludge transportation and landfill space.

GN Solids Control solids liquid separation decanter centrifuge have been working for oil drilling many years. The stable working performance and reliable life time win good reputation for GN Solids Control. And now we just published three phase  centrifuge for solids, water and oil three phase separation.

Except for decanter centrifuge and three phase centrifuge, GN main market is still in drilling waste management and solids control equipment.

GN drilling waste management equipment including: vertical cuttings dryer, waste centrifuge, solidification unit, fixation unit, thermal desorption unit, etc. Drilling Waste management equipment is used to treat the solids mixture discharged from shaker, recover valuable drilling fluids for reuse and reduce the waste need to be treated in following stages.

For water based mud, client normal choose High G drying shaker, decanter centrifuge and solidification unit. After treatment of solidification unit, the solids can be buried in cement ponds as final step. For oil based mud, client need to use vertical cuttings dryer, decanter centrifuge, thermal desorption unit. Thermal desorption unit can get cuttings solids with oil below 0.3%, this standard can meet the requirement of most country’s government protection policy. Compared with water based mud, OBM cuttings treatment cost is much higher both in equipment expense and operation cost.

GN Solids Control equipment including: shale shaker, mud cleaner, shaker screens, desander, desilter, decanter centrifuges, mud agitator, centrifugal pump, screw pump, mud tanks etc. GN Solids Control mud system can form a close loop mud circulation with drilling rig and mud pumps. After the mud ready for drilling, the mud pump will suck from the mud system and feeding for drilling rig. The mud from drilling rig flowline will go back to mud tank system for cleaning, adjusting and go back to mud pump. The mud tank system generally include four stage mud treatment and will remove particles in different size by different stage, shale shaker stage, desander stage, desilter stage and decanter centrifuge stage. Two phase separation centrifuge is mostly used in solids control system, very few clients choose three phase centrifuge.