Phospho-Friction Reducing Agents for Use in Oleaginous-Based Drilling Fluids

摘要

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).

主权项

1. A method comprising:
drilling at least a portion of a wellbore penetrating a subterranean formation while circulating in the wellbore a drilling fluid comprising an oleaginous base fluid and a phospho-friction reducing agent, wherein the phospho-friction reducing agent comprises at least one compound according to Formula I, wherein R1 is selected from hydrogen, C1-C20 alkyl, aryl, C6-C20 alkylaryl, C6-C20 arylalkyl, polybutene, polypropylene, polyethylene, pentaerthritol, trimethylolpropane, esters of pentaerthritol, esters of trimethylolpropane, partial esters of pentaerthritol, partial esters of trimethylolpropane, phosphonic, phosphonate, phosphate, aminophosphonic acid, aminophosphonate, acyl, amine, hydroxy, or carboxyl groups, R2 and R3 are independently selected from hydrogen, C1-C20 alkyl, aryl, C6-C20 alkylaryl, C6-C20 arylalkyl, polybutene, polypropylene, polyethylene, pentaerthritol, trimethylolpropane, esters of pentaerthritol, esters of trimethylolpropane, partial esters of pentaerthritol, partial esters of trimethylolpropane, phosphonic, phosphonate, phosphate, aminophosphonic acid, aminophosphonate, acyl, amine, hydroxy, carboxyl groups, sodium, potassium, ammonium, or an organic radical, and X is oxygen or sulfur.