Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Terpolymer compositions for aqueous drilling fluids

Terpolymer compositions for aqueous drilling fluids

US Patent RE33856 · Granted Mar 24, 1992

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Cat litter box2019
Method for reducing fluid loss from oilfield cement slurries using vinyl grafted1992
Method for reducing fluid loss from oilfield cement slurries using vinyl grafted1992
Terpolymer composition for aqueous drilling fluids1992
Terpolymer composition for aqueous drilling fluids1992
Enzymatically degradable fluid loss additive1991
Vinyl grafted lignite fluid loss additives1991
Method for temporarily reducing permeability of subterranean formations1991
Additive and method for temporarily reducing permeability of subterranean format1991
Vinyl grafted lignite fluid loss additives1990
Calcium tolerant deflocculant for drilling fluids1988
Terpolymer composition for aqueous drilling fluids1987