займ на карту срочно без отказа займ онлайн
Oct 23

While perform the drilling project on the earth, the rig produce the byproduct of cutting, crushing and grinding of solids that will be broken in loose pieces in different size. The size in industry standard is measure by micron. Solids control equipments in different filter stage will achieve the result by its design yet for muti-stage filter process, the line up of correct order of the machines are the must.
Mongoose Composite material screen 1
To make sure the drill hole cutting surface to the ground , the drilling fluid need to have enough speed in return. It depends on the well diameter and rig ability to decide the pump output volume to achieve the fluid speed. To achieve that speed, solids control machineries need to perform in specific purification level base on particle size and treating capacity are fact that need to be consider.
The choice of drilling fluid shaker screen

Shale shaker is filter the solids in drilling fluid and it is one of the primary equipment. The shale shaker filter the solids in various size by use the mesh that have different opening and layers to achieve the task. The mesh number of the screen is bigger, the smaller capacity to remove the solid size is smaller. The mesh number of is smaller, the bigger capacity to remove the solid size is larger.

In the drilling process, the mud pump produce large volume of mud that contain large cutting. The screen should use smaller mesh number to filter the cutting. Later in the drilling process while increase the depth and the well diameter is getting small, the pump produce the mud that contain smaller cutting, then it is time to use larger mesh number to filter smaller cutting. Other consideration such as mix ratio of water and solid will affect the result of filtering by the screen.

written by GN Desander Desilter \\ tags: , ,

Oct 20

1. To make sure the operation of the shale shaker and normal usage life on screen, the operator need to make sure parts like wedges, screw cap bolt and springs on the shale shaker are installed correctly with no signs of wrongdoing. The operator installs the screens according the operation manual provide it from the seller.
2. To get full usage of the pre-tension shale shaker screen, operator need to ensure the rubber parts of the shale shaker is fully intact and show no sign of damage. Shale shaker screen is wear and tear parts and it will be needed for replacement after normal usage. If wear-down speed is faster than normal, then check all the moving parts of shale shaker is functioning properly and secure the screens correctly.
703 Shale Shaker 2
3. Lubrication and consist maintenance the shale shaker moving parts base on the operation manual is the must to ensure proper operation.
4. If the operator uses an OEM shale shaker screen that have not been pre-tension treatment, it is the must step that need to perform before usage.
5. If the drilling fluid flow out of the pore or damaged place, then cuttings can’t be removed. Any screen with holes or be damaged must be changed immediately, the hole and the damaged place can be sealed up by the panel. The screen must be changed as soon as possible, make a plan before the replacement to reduce the stopping drilling time, you should prepare the tools and screen before beginning to replace, if because the shale shaker is not operating, it will increase the cuttings content. It’s best to exchange the screen in a single period if possible. Need to stop the pump at the emergent time, stop drilling so as to replace the screen of shale shaker.
6. Any problem please fell free to contact us and learn to know our other products including mud agitator, decanter centrifuge, desander, mud tank ,drilling waste managent, drilling mud system etc.

written by GN Desander Desilter \\ tags: , , ,

Dec 13

Generally, screens on shale shakers refuse solids much larger than their opening sizes and keep the drilling fluid and smaller solids. Drilling fluid properties, in addition, screen conditions may have an effect on screen performance .For instance, high gel strengths and high surface tensions have a tendency to connect small screen openings and avoid screens from passing small solids and liquid; filtration control additives, just like starch, are likely to plug screen openings and stop small solids and liquid from transiting; and in an oil based drilling fluid, water wet, fine mesh screens may avoid a big part of the drilling fluid from flowing upon the screen.


When 50% of the mass of a specific solid size is found in the under flow of a screen and 50% of the mass of that size is found in the over flow, that size is sand to be the d50 or 50% cut point. Cut point curves, or 50% percent separated curves, is a visual representation of the genuine calculated separation of solids made by the screen. As an example, a d20 cut point would probably be the size where 80% of the mass of solids of that size are taken back to the drilling fluid (pass through the shaker screen) and 20% of the mass of that size solid is rejected from the system (discarded) .


A number of manufacturers may make contribution to premature screen failure. Most failures are caused by improper screen installation or destroy the shaker itself. Damaged or distorted shaker beds,  that may be on account of several years of continuous use or incorrect maintenance, will lead to poor vibration patterns. This may result in improper maintenance, will lead to poor vibration patterns. This may result in improper solids conveyance, which in return, may cause solids to collect assemble on specific areas of the screen, wearing holes in that section. Broken beds may also influence the tensioning capability of the tension system, inducing flexure in the screen. This boost in flex causes the screen itself to vibrate separately from the basket against the screen support stringers, damaging the spot on the screen where this is taking place.

shaker screen2

written by GN Desander Desilter \\ tags: , ,

займ на карту срочно без отказа онлайн займ на карту без отказа