Solid polyamine-based fluid loss control additives

Details Solid polyamine-based fluid loss control additives Solid polyamine-based fluid loss control additives

1982-06-21

1984-11-13

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106314, C04B 735

Patent

active

044823819

ABSTRACT:
A free-flowing solid particulate composition containing a polyamine dispersed on a finely divided, high surface-area silica or silicate adapted to be mixed with dry hydraulic cement to reduce fluid loss during well cementing. Preferably, polyethylenepolyamine or polyethylenimine is dispersed on a high surface-area silica. Improved well cementing in porous media is achieved by mixing the composition with dry hydraulic cement, adding water to the mixture to create a slurry, and pumping the slurry down the well casing into contact with the porous media. The composition acts as a fluid loss control agent at temperatures below 100.degree. F. without sulfonated polymers.

REFERENCES:
patent: 2692871 (1954-10-01), Pechukas
patent: 2982665 (1961-05-01), Wilcox
patent: 3431231 (1969-03-01), Darcy et al.
patent: 3455717 (1969-07-01), Debus
patent: 3455718 (1969-07-01), Dithmar et al.
patent: 3491049 (1970-01-01), Gibson et al.
patent: 4125160 (1978-11-01), Crinkelmeyer

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