Centrifuge operation notes
GNLW series decanter centrifuge is horizontal spiral type which all model of decanting centrifuge that GN Solids manufactured. Decanter centrifuge is the fifth stage equipment in drilling mud system for solids control and mud cleaning. The superiority of Decanting Centrifuge is embodied in the solids processing size. Decanter Centrifuge could remove the solid particles with size 2-7 microns by using the principle of centrifugal action in high RPM and it is an ideal choice for separating fine particles in drilling mud.
Decanter centrifuge is a machinery that is delicate to remove fine particles and it requires to be closely monitored due to there are a lot of moving parts involved. Different models of decanter centrifuge in various treating capacity and RPM operation speed are operate differently. Please consult with your owner's manual. Below are common notes when operate decanter centrifuge:
1. Make sure the belts are installed properly and tight before turn the decanter centrifuge on.
2. Use hands to rotate the drum to make sure the drum can move freely before turn the decanter centrifuge on.
3. Before turn on the decanter centrifuge on, turn on the feeding pump first.
4. Monitor the feeding rate of the drilling mud according decanter centrifuge's owner manual. Decanter centrifuge's RPM rate is need to reach to operation rate before processing the drilling mud.
5. Any unusual noises happen during the operation, it need to stop the operation right away.
6. Do not feeding the mud more than operation capacity to avoid the choke block.
7. The weighted and high viscosity drilling fluid needs low feeding speed and high dilution rate.
8. To ensure that you can stir in the entrance of centrifuge and the barite slurry return to the mud tank.
Shut-down the operation by stop the feeding pump, stop dilution, and finally shut the decanter centrifuge down.
China Giant Drilling Companies Buying from GN for Zero Discharge Systems
As the second to none drilling waste management solution provider and equipment manufacturer, GN Solids Control, although a completely private owned company, GN Solids Control is attracting more and more attentions from the China drilling giants, because of the newest and advanced solutions it provides.
Because the global warming issue and also the higher standards for protecting the fragile environment, more and more companies are forced to spend money and energy in the environmental issues. Therefore, to find a cost-effective solution and a reliable supplier is very important for the end users and every drilling company or and every service company. GN Solids Control and GN’s products are proved to be the suitable and best choice.
What does GN provide?
1. complete line of solids control systems, available capacities ranking from 250GPM to 3000GPM, equipments including shale shaker, desander, desilter, mud cleaner and solids control centrifuge, besides, there are pumps for feeding all those equipments. And also mud agitator, mud gun and jet mud mixer of all necessary capacities.
2. waste management system-for drilling cuttings, GN has different solutions for drilling waste cuttings treatment, including for WBM and OBM, and per different clients’ requests, GN could customize them per jobsite need. GN even have module equipments to layout as building blocks. Those equipments are vertical cuttings dryer, decanter centrifuge and high-G shale shaker. Also screw conveyors are needed in such systems.
3. waste management system- for drilling fluid, GN has dewatering unit and dewatering centrifuge with a high speed, it will finally treat the drilling fluid and even the smallest particles are separated from the fluids.
Besides those systems, GN also have solidification unit and TDU and etc. GN’s products are widely used in many industries not only limited in oil and gas drilling. GN’s clients are not only the giant drilling companies in domestic China, but also from more than 60 countries and regions all over the world.
Helicopter lifting Oil rig Mud System shipped to Papua New Guinea
After 2-months hard working, finally, GN Solids Control dispatched the full set helicopter lifting mud tank system. The total system including 11 modular as below:
1) There are 9 ea full functional mud tanks, complete with pipelines, walkways, ladders, guards, vales, electrical control systems, sun & rain sheds, and other necessary accessories.
2) 2 ea transportation frame for equipment and spare parts lifting and shipment.
It is a very special and difficult project. Every design, no matter how small, showed be caculated carefully, every spare parts and accessories should be chose from famous brand. Every design is new made, while the leading time is very very tight. Normally, for this kind of project, it should take a couple of months only to make sure the design drawings, not consider the manufacturing. But as the end user have strict time schedule, it cannot be changed. In order to support client for the project, GN people works for 7 and 24 hours, and finally finished the while system within a short time. 
Why we say this oil rig mud system is very special and difficult? Below is some features of the system:
1) As the whole system is designed for helicopter lifting standard, the total weight of every single modular should be not more than 9 tons, but it is on condition that the storage volume and strength should be strictly ensured.
2) Furthermore, as the reason of safety and to comply with the HSE standard, every modular must be strong enough for helicopter lifting. And the lifting point should be specially design to suit for helicopter lifting. It must be strong enough and should be keep balance during lifting. Every design should come from strict calculated.
3) Every components of this mud tank system are chose from high quality and famous brand, like valves, unions, bearings, lights, motors, paint, etc…
4) All pipelines are made from SS316L for longer lifetime.
5) All welding jobs of this system should be complied with ASME standard, and should be tested by NDT.
6) Coating & Painting are chose from worldwide famous brand PPG
This projects give GN much experience on helicopter lifting system design and manufacturing. GN can offer more professional and fast supporting for any new helicopter lifting project in the future. Welcome customers contact GN Solids Control for any inquires.