Cement compositions for cementing of wells enabling gas channelling in the cemented annulus to be inhibited by right-angle setting
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United States of America Patent
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Aug 30, 1988
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N/A
app pub date -
Jan 17, 1986
filing date -
Jan 29, 1985
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Expired
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Abstract
The cement compositions according to the invention are designed for cementing wells, in particular oil and gas or geothermal wells, and for withstanding very high temperatures. A combination of styrene-butadiene latex and a polyoxyethylenated nonylphenol stabilizer of this latex is provided. Cement sets at a right angle and gas migration in the annulus is prevented.
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