Fluid Loss Control Additive and Cement Compositions Comprising Same
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United States of America Patent
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May 29, 2008
filing date -
Feb 22, 2005
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Abandoned
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Abstract
A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the polymer is a polyvinyl alcohol, and the sugar is a sugar alcohol such as sorbitol.
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