Mechanisms of Rheological Deterioration in Spent-Oil-Based Drilling Fluids and Viscosity Reduction Using an Amide-Carboxylic Acid Additive
During drilling operations, the continuous accumulation of low-gravity solids (LGSs) may progressively deteriorate the rheological properties of oil-based drilling fluids (OBDFs), thereby limiting fluid reuse. Centrifugation or dilution provides only limited rheological improvement. To identify the factors contributi...