GN Solids Control provides varieties of feeding pumps, like screw pump, submersible pump, centrifuge pump, shear pump, vacuum pump etc. Generally speaking, screw pump and submersible pump is used to feed decanter centrifuge, while centrifuge pump and submersible pump is used to feed hydro-cyclones.
Several weeks ago, we have one submersible pump issue occurred in South America. According the design principle: GN submersible pump will shut down automatically in order to protect the motor, which was designed and manufactured to run at 36A, 50A is too high.

We don't have extra motors for this pump. If you use higher running amperage, the power should be larger than 30Hp, which will increase the feeding volume and will affect the whole system separating process.
Desander pressure gauge was reading 25 psi, which is about 0.17 Mpa. What our team members did observe is that there are only 8 cyclones (pipes) on the desander, and 4 of the openings are plugged off. Our team members reviewed the spare parts but did not find any extra...
From the below guidance, appears we are about “spot on” regarding pressure…
adding in the 4 extra could potentially lower the pressure and potentially reduce some of the load on the pump?
Submersible pump to feed the fine shaker, so far so good! It does not shut down! We agree with the engineer, but so far that pump is doing fine. Will be even better with the agitators!
The pressure seems normal, need to discuss with our engineer and get back to you.
There are 8 sets cyclones assembled on the shaker. The rest 4 openings are blocked in order to control whole system treating volume, with more cyclones the treating volume will also get larger (4 sets cyclones will increase 500GPM treating volume). This is why we only use 8sets and didn't provide extra cyclones in the spare parts list.
At last we recommend modifying the impeller of this submersible pump. GN engineers recommend using one smaller impeller which is around 270mm.

GN Solids Control has provided thousands of solids and liquid treating units which are usd in various working sites to meet customers’ demands.
Today we would like to share another inquiry on GN Soil Remediation Unit. Here are the questions from our customer:
1. Does this system need a Pre-screening (or shaker type system), in the event large solids get pulled from the Tunneling operations (i.e. clay clumps, sand, nuts bolts, grease clumps, etc.)?
It's necessary to use one coarse shaker before feeding the slurry into decanter centrifuge if you have those large solids. We actually recommend the coarse shaker before. By using a coarse shaker (double deck or single deck depends on the slurry analysis), it will improve the separating performance of the centrifuge and also protect the centrifuge without too much wear from those large solids.
According to your former email, there's no large solids, please kindly help to double check. After treated by the decanter centrifuge, only few finer solids are left in the slurry. You may use one Inclined Plate Clarifier to removal them before release into the sewers. Or you may just use one holding tank in order to save cost.
2. Can you send a flow drawing of the complete system that shows the components included and any components that are needed that are not included?
Let's work on the system design first. A typical treating system will include: coarse shaker (depend on whether exist large solids)+ decanter centrifuge (necessary)+ dosing unit (necessary)+ inclined plate clarifier/ holding tank (optional).
For the decanter centrifuge +dosing unit, you may check those former drawings we sent to you before. Flow drawing can be provided after we confirm on what treating equipment will be needed.
GN Solids Control decanter centrifuge also provide Vibration switch to protect the two main bearings (also bearing temperature sensor), they can be fixed on the centrifuge as following decanter centrifuge we provided to Baker Hughes. They can both be integrated into our VFD control panel. Usually, they are provided when customer demands them. We have no problem to add them into your future unit.

GN Solids Control designs and manufactures various shaker screens. Until now, GN Solids Control made shaker screens are using in over seventy countries, which includes thousands of shaker shale shaker users.
GN Solids Control opened one branch company in Houston, TX. A large warehouse stocks more than 5000 pieces shaker screens in Houston, replacement shaker screens like Mi-Swaco Mongoose shaker screens, replacement Brant VSM 300 screens, replacement Venom or King Cobra Screens, replacement Fluid System Screens FSI5000 series. All of those screens are all composite frame screens. GN Solids Control has done some compare test in the drilling rig sites, it turns out most of the cases GN Composite Frame Shaker screens are even better than the traditional metal frame screens. GN Solids Control also manufactures replacement screens for Derrick 500 and Derrick 2000 series.
Since the opening of GN Solids America LLC, GN Solids has solids more and more shaker screens to North America and South America customers. Now many drilling companies are using GN Solids Control shaker screens in USA, Canada and Mexico. These days, GN Solids Control also got more and more inquiries from Latin America countries.
GN Solids Control would like to find some shaker screens distributors in Latin America countries. If you are using those OEM shaker screens, and you are tired of paying high shaker screen price, welcome to connect with GN Solids America LLC for more info.
GN Solids Control shaker screens now are also largely using in Latin American countries, such as Venezuela, Brazil, Trinidad etc. Before the oil price was very high, many drilling rigs stopped working, even those drilling rigs still working were trying to find the most cost-effective solids control equipment. GN Solids Control is a whole solids control and waste management system manufacturer. GN Solids Control shaker screens are also largely accepted by Latin America solids control service providers.

GN Solids Control is a shaker screens manufacturer who has long time manufacturing experience. As time went by, more and more shaker screen users are using GN screens to replace those OEM screens.
GN Solids Control now manufactures more than five thousand pieces shaker screens monthly. GN Solids Control delivers shaker screens to customers from more than seventy countries and regions. GN Solids Control has been providing shaker screens to most of those large oil and gas end users.
Although GN Solids Control is a China manufacturer, GN Solids Control only uses the world famous raw materials, such as the shaker screens GN Solids Control purchase from YKM, which are also largely used by Derrick and Mi-Swaco.
GN Solids Control opened the No.2 factory, which mainly manufacture shaker screens in the this February, 2017. Now GN Solids Control is able to provide more than five thousand pieces every month. GN Solids Control has a whole manufacturing production line includes robot welding machines, mould injecting machine etc. Various types of shaker screens can be manufactured by GN Solids Control.
GN Solids Control is able to provide the following replacement shaker screens: Nov Brant Venom or King Cobra, NOV VSM 300, Mi-Swaco Mongoose/ Meekat, Fluid System 5000, Derrick 500 or Derrick 2000 etc. Most of screens that GN No.2 factory provided are composite frame shaker screens.
GN Solids Control made composite frame screens are largely stocking in GN Houston warehouse. GN Solids Control warehouse now can stock more than 6000 pieces shaker screens which cover most of those very popular shaker screens from API 20 to API 325.
As a branch company, GN Solids America LLC is developing so fast with the great support from GN Solids Control. GN Solids America is located in Houston, TX 77040, close to highway 290 and 8. Every day, there are shipping company come to pick up shaker screens and deliver to the different drilling rigs sites.