Composition for a lightweight cement slurry for cementing oil and gas wells
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United States of America Patent
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-
Jan 26, 1988
Grant Date -
N/A
app pub date -
Aug 19, 1985
filing date -
Nov 15, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lightweight cement slurry composition having a density in the range of 1.2 to 1.6, containing a solid extender agent and an SBR latex. The ratio of the liquid volume to the slurry volume should be less than 70% and preferably less than 63%. The lightweight slurry then presents a most attractive set of properties which could not be obtained previously, and in particular gas channelling is controlled.
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