Solids Control is one of the most important process of drilling. The reason for using mechanical solids control equipment is to remove detrimental drilled solids from the mud system. Effectively removing unwanted solids from the drilling fluid on the first pass through the solids control equipment is an important factor in maintaining drilling fluid properties and reducing drilling fluid cost. 
Mechanical solids control equipment including: shale shaker(separated by wire mesh), mud cleaner, desander, desilter( by accelerated G-force) and decanter centrifuge.