Review of synthesis, characteristics and technical challenges of biodiesel based drilling fluids

Over the last decades, biodiesel-based drilling fluids have drawn attention of researchers due to their biodegradability, low cost, high flash point compared other synthetic-based fluids. This review study discusses development and analyzes characteristics biodiesels (based on required range values for properties) that lead better understanding in choosing proper biodiesel Although, using as base oil fluids, showed a favourable performance, it still poses some technical challenges such excessive viscosity, poor pour point, hydrolytic stability water-in-biodiesel emulsion stability. In this study, recommended solutions including chemical modification biodiesel's molecular structure, additives mixing with oils are presented. It was highlighted structure or use can be expensive promote incompatibility components. On hand, blending oils, promising found environmentally-friendly mix biodiesels, synthetic esters, paraffins linear alpha olefins. Furthermore, recent studies suggested nanomaterials (with hydrophobic characteristics) stabilize