Drilling Fluid Contamination
Contamination is a steady process while drilling, as drilled solids are continually entering the mud. While much of the drilled solids are inert, there are certain materials which can cause severe chemical and physical problems.
Contaminants tend to become apparent more quickly with lightly treated muds rather than with more highly inhibited varieties.
Any contamination must be treated immediately so it is essential that careful and frequent checks are maintained on the mud properties at all times.
Advance treatment to prevent contaminants affecting the mud can be made if . . .