Dual function cement additive

Details Dual function cement additive Dual function cement additive

2011-08-23

2011-08-23

Marcantoni, Paul (Department: 1731)

Compositions: coating or plastic

Coating or plastic compositions

Alkali metal silicate containing

C106S724000, C106S727000, C106S728000, C106S737000, C106S819000, C106S823000, C166S292000

Reexamination Certificate

active

08002889

ABSTRACT:
The use of silicate as a retarder enhancer at appropriate levels to enhance the retarding effect of retarders at high temperatures encountered downhole while accelerating the set of cement at lower temperatures encountered near to the surface.

REFERENCES:
patent: 4354874 (1982-10-01), Vickers
patent: 5006177 (1991-04-01), Oberste-Padtberg
patent: 5049288 (1991-09-01), Brothers et al.
patent: 5361842 (1994-11-01), Hale et al.
patent: 5447197 (1995-09-01), Rae et al.
patent: 5547506 (1996-08-01), Rae et al.
patent: 0234057 (1987-09-01), None
patent: 2667058 (1992-03-01), None
SU 715539 A1 (Feb. 15, 1980) Krivorotov et al. Abstract only.

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