Well cement slurries and dispersants therefor
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United States of America Patent
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-
May 8, 1990
Grant Date -
N/A
app pub date -
Jan 23, 1989
filing date -
Jan 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Well cement slurries, water soluble dispersants therefor and methods of producing the dispersants are provided. The dispersants prevent high initial cement slurry viscosities and friction losses when the slurries are pumped, and are comprised of water soluble sulfoalkylated naphthols in which the naphthol molecules are alkylated with at least one group having the formula --C(R).sub.2 --SO.sub.3 M wherein R is selected from hydrogen and alkyl radicals containing from 1 to 5 carbon atoms and M is an alkali metal.
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