Setting retarding composition for well cementing and recementing

Details Setting retarding composition for well cementing and recementing Setting retarding composition for well cementing and recementing

1977-07-11

1979-01-30

Douglas, Winston A.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106 92, 106 93, C04B 1322, C04B 1324

Patent

active

041370937

ABSTRACT:
The present invention relates to an improved composition that retards setting in the cementing and recementing of oil well casings, which can be applied at depths that vary between 13123.4 and 21325.5 ft.
The retarding composition is constituted by the following ingredients: sodium or potassium carboxymethylcellulose; sodium tetraborate and Dextrine, it being characterized in that it also contains an inorganic acid such as boric acid.

REFERENCES:
patent: 3598621 (1971-08-01), Ferrara
patent: 3753748 (1973-08-01), Martin
patent: 3905826 (1975-09-01), Rosado et al.

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