Gas generation retarded aluminum powder for oil field cements
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United States of America Patent
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Jan 21, 1986
Grant Date -
N/A
app pub date -
Feb 26, 1985
filing date -
Feb 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An essentially dry gas generation retarded aluminum powder for oil field cements is provided. The retarded aluminum powder is formed by dissolving an effective amount of an aluminum reaction rate retarder in an organic solvent, the retarder being selected from fatty acid esters of sorbitan, glycerol and pentaerythritol. Aluminum powder is mixed with the retarder-solvent solution whereby the aluminum powder is wetted with the solution followed by drying the aluminum powder by vacuum evaporating and removing the organic solvent therefrom. Methods of forming gas generation retarded oil field cements and using such cements are also provided.
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