Well drilling fluids and process for drilling wells
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United States of America Patent
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-
Mar 1, 1988
Grant Date -
N/A
app pub date -
Dec 13, 1985
filing date -
Dec 13, 1985
priority date (Note) -
Expired
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Abstract
The rheological characteristics of aqueous well drilling fluids are improved by incorporating into the fluids small amount of sulfonated styrene-itaconic acid copolymers and at least one water-soluble polymer prepared from acrylic acid or acrylamide or their derivatives.
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