A step-change is needed in drilling process control, to enable consistently high performance, accurate pressure control and reduced risk of unwanted effects. Advances in process control have been made but risk reduction and optimization of the drilling process is still a major challenge.
In the drilling fluids service industry the term “inhibition” has come to mean the suppression of hydration of clay, which means inhibit the water to transform the shale into swelled, soft, sticky shale, while her ewe mean the inhibition of swelling pressure. After this knowledge it is acceptable to define inhibition as Reduction of swelling pressure.
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.
Mud has many important functions and corresponding necessary properties.