Many people are interested in GN Solids Control Screen Vacuum System. It is not a popular technology, many people do not know much about the vacuum screen technology. Many customers contact GN Solids Control to ask for information of Screen Vacuum Unit, including Catch Pan, Hoses and all the required accessories. Below are some communications between clients and GN Solids Control.

Question: The Screen Vacuum Unit is designed to be used on Onshore rig and offshore rigs. There are different shale shaker models at different drilling rigs. Can GN Solids Control build Catch Pans based on the existing shale Shaker models?
Reply from GN Solids Control: GN Solids Control can only build catch pan for GN own design shale shaker, and a few shale shaker models. GN Solids Control cannot make catch pan for other brand shale shaker at this moment.

Question: It said, the air pressure required is 100-150 psi. Most of the rig air compressor only supply 80-120 psi, would this affected the Screen Vacuum Unit performance?

Reply from GN Solids Control: 80-120 PSI is fine.

Question: What are the sizes of hoses from the catch pan to the Screen vacuum Unit? What are the chances of this hoses being plugged up?
Reply from GN Solids Control: It’s 2 inch hoses from the catch pan to the screen vacuum unit.
Because of the high vacuum which is up to 25 HG (Mercury Column), the power for suction is high. And also the hose for the suction is specially designed with anti-blocking material like plastic inside the hose. So it will avoid the blocking.
The capability of the vacuum pump is shown below as in the video:
https://www.gnsolidscontrol.com/sludge-vacuum-pump

Question: Where is the recovery fluid going to be discharge? Back to the active or through centrifuge?
Reply from GN Solids Control: The recovery fluid will go back to the shaker tank under the shale shaker, it needs to be treated by the afterward solids control equipment like desander desilter or decanter centrifuge. The advantage for our vacuum screen unit is that, you can calculate the flowrate of the recovery fluids volume.


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