| abstract |
Phospho-friction reducing agents may include phosphonates, thiophosphonates, and derivatives thereof. The phospho-friction reducing agents may be included in drilling fluids with oleaginous base fluids and used in methods that involve drilling a wellbore penetrating a subterranean formation. Further, the phospho- friction reducing agents may be useful at relatively low concentrations in the drilling fluids {e.g., about 0.001 v/v% to about 0.5 v/v% of the drilling fluid). |