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Home › Sulfonate-containing polymer/polyanionic cellulose combination for high temperature/high pressure filtration control in water base drilling fluids

Sulfonate-containing polymer/polyanionic cellulose combination for high temperature/high pressure filtration control in water base drilling fluids

US Patent 5008025 · Granted Apr 16, 1991

Estimated economic value: $16,080,000 ⓘ

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