High temperature well cement compositions and methods

Details High temperature well cement compositions and methods High temperature well cement compositions and methods

1992-11-09

1993-12-28

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106730, 106725, 106804, 405266, 405267, C04B 2410

Patent

active

052735800

ABSTRACT:
Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.

REFERENCES:
patent: 3794115 (1974-02-01), Skagersberg
patent: 4777360 (1984-10-01), Almond
patent: 4997487 (1991-03-01), Vinson et al.

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