Understanding Solid Content in Drilling Mud

Drilling fluids play a prominent role in the extraction of oil and gas. To ensure efficiency and prevent damage to equipment and the production zone, specific properties of the drilling fluids should be kept in check. These properties include solid concentration and particle size.

What is solid content?

Soluble and insoluble solids in the drilling fluid system are referred to as solid content. They include chemical additives, weighting agents and drilling cuttings. The concentration of these solids increases while drilling. There are three types of solid content:

Impacts of solids in drilling mud on operations

Controlling drilling solids in drilling fluids

Insoluble low-gravity solids pose the greatest danger to the drilling fluid; they slowly depreciate the mud properties. Furthermore, removal of some drilling solids from the mud is difficult. For example, if the solid particles are less than five microns in size, they cannot be isolated from the mud by mechanical means.

Typically, the optimum density for drilling fluids is 3.8 or higher. The presence of excess low-gravity solids in the mud can make the density drop below 3.8.

Due to the great danger posed by drilled solids, it is a good practice to test the level of drilled solids in the mud at least twice daily. The concentration of drilled solids in the mud should not exceed 6-7 percent.

Aerion can help you control the properties of drilling mud

Our specialists analyze the properties of your drilling fluids and adjust them to the optimum levels. We do this through particle size and distribution analysis, and by regulating the concentration of solids in drilling muds. For more information on working with Aerion and the services we offer, please contact us here.

Must be logged in


Customers across the country have come to rely upon Aerion to provide professional, safe and cost-effective oilfield services wherever and whenever needed. We invite you to contact us today to find out how our full range of oilfield services can improvie your operations