Fluid loss additive for cement
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United States of America Patent
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Feb 4, 1986
Grant Date -
N/A
app pub date -
Dec 28, 1983
filing date -
Jan 28, 1983
priority date (Note) -
Expired
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Abstract
An aqueous solution of a terpolymer, useful as fluid loss agent for drilling muds and not for cement slurries, is treated with acid and heat. An excellent fluid loss agent for cement is obtained. Very efficient liquid additive, for all purposes, which does not modify either the rheology, nor substantially the setting time.
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