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Home › Vinyl sulfonate amide copolymer and terpolymer combinations for control of filtration in water-based drilling fluids at high temperature

Vinyl sulfonate amide copolymer and terpolymer combinations for control of filtration in water-based drilling fluids at high temperature

US Patent 4608182 · Granted Aug 26, 1986

Estimated economic value: $20,567,000 ⓘ

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