Mud is circulated through a wellbore to bring the cuttings to the surface. Here cuttings are separated out so that clean mud can be reinserted into the well.
Parameters affecting shaker Screen Impairment
Solids and the liquid phases of drilling muds invade and interact with reservoir formations. This invasion and interaction changes formation permeability and can prevent fluid flow from the reservoir into the wellbore. Damage caused by mud spurt and drilling-mud filtrate can influence log response. The full-length paper describes a novel method to determine the formationdamage potential of drilling muds by evaluating the erosional characteristics of mudcakes formed by different mud systems.
Mud systems have a lot of moving parts that must be kept in order to keep them in premium working order. If you do not grease and adjust centrifugal packing on a regular basis, it will leak causing not only a mess but also hazardous work environment. Bearings require lubrication for long life. Cones can get plug with debris making them inactive thus reducing your cleaning capacity. Screens get torn allowing trash to go into the system causing plugging problems.