Gas generation retarded aluminum powder for oil field cements

Details Gas generation retarded aluminum powder for oil field cements Gas generation retarded aluminum powder for oil field cements

E - Fixed Constructions

21

B

31/14, 48/47

E21B 33/14 (2006.01) C04B 22/04 (2006.01) C09K 8/46 (2006.01)

Patent

CA 1238784

Abstract of the Disclosure An essentially dry gas generation retarded aluminum powder for oil field cements is provided. The retarded alu- minum 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 sor- bitan, glycerol and pentaerythritol. Aluminum powder is mixed with the retarder-solvent solution whereby the alumi- num 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 genera- tion retarded oil field cements and using such cements are also provided.

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