The drilling fluid is a major factor in success of the drilling program. There are four mechanical or physical properties to control in the treatment of drilling mud:
- density
- viscosity
- gel strength
- filtration
Drilling Fluid Management & Disposal
Drilling fluid waste management and solids control of drilling mud related technical and developed situation.
Drilling fluids processing handbook
The drilling fluid is a major factor in success of the drilling program. There are four mechanical or physical properties to control in the treatment of drilling mud:
The industry has had to react in recent years to significant major challenges, improving both the chemical stability of the emulsifier system and the impact on the environment. This latter factor covers both occupational health and environmental hazards resulting from contact with the fluids themselves and the wastes generated, mainly drilled cuttings. Under pressure from state environmental agencies, the industry, particularly offshore, is being pushed to use fluid system components exhibiting maximum biodegradability which should, in
addition, be achieved with minimum oxygen demand. The system components should also be non-bioaccumulative, and the complete systems should exhibit low toxicity on representative species (an alga, a crustacean, and a sediment re-worker or a juvenile fish).
Solids control is the most important function in mud treating. Control of mud properties centers around the treatment necessary to counteract the continual influx of drilled solids into the active mud system. Almost all of the costs of treating a mud can be directly attributed to solids control.
These tests are used to determine the shaker mesh size required to provide protection against screen impairment and quantify the mud plugging index (MPI) to be used on the rig to control mud quality prior to running the screen in the hole.