1.3 Rheological Models of Oil Based Mud Drilling Systems
Rheological models are basically graphical forms of arithmetic facsimiles used to describe the flow pattern of a drilling fluid system sample. There are three very popular rheological models that are known in the oil and gas industry. These are the Bingham plastic model, he Power law model also known as the Ostwald de Weale model and the Herschel Bulkley model [6].