HIGH-TEMPERATURE HIGH-PRESSURE RESERVOIR DRILLING FLUID
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United States of America Patent
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Jul 9, 2015
app pub date -
Jan 7, 2015
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Jan 7, 2014
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Abstract
A drilling fluid, comprising an aqueous continuous phase, a polymeric fluid loss control agent formed from at least an acrylamide monomer, and a sulfonated anionic monomer, and a gelling material comprising at least one of clay or a cross-linked polyvinylpyrrolidone.
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