Abstract: A water base drilling fluid additive contains biodiesel, lime, calcium chloride and solids for improving viscosity of the drilling fluid, while containing biodegradable ingredients. The additive also contains a weighting agent, for instance barite, a well bore sealant, such as bentonite, and an emulsion stabilizer, such as is lignosulfonate.

Abstract: A well drill lubricant and shale stabilizer employs a sugar alcohol, such as glycerin or crude glycerol and graphite beads suspended in the liquid alcohol. A viscosity agent, such as a gum, is added to improve viscosity along with water. Some impurities present in crude glycerol, such as ash, methanol and MONG are present in small amounts. The composition is non-toxic, fully biodegradable, while possessing high coefficient of lubricity.