Well cement compositions having improved properties and methods

Details Well cement compositions having improved properties and methods Well cement compositions having improved properties and methods

1991-10-21

1992-09-22

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106713, 106724, 106819, 106823, 166293, 166294, 405266, 507106, 507107, 507120, 507121, 507108, C04B 912, C04B 700, C04B 4000

Patent

active

051493705

ABSTRACT:
Cement compositions which have improved properties such as increased stability, reduced settling tendencies, enhanced fluid loss properties and the like and methods of using such cement compositions are provided. The cement compositions are comprised of water, hydraulic cement and an aqueous colloidal silicic acid suspension wherein the colloidal silicic acid particles have a specific surface area in the range of from about 50 m.sup.2 /g to about 1000 m.sup.2 /g.

REFERENCES:
patent: Re32742 (1988-09-01), Skjeidal
patent: 4935060 (1990-06-01), Dingsoyr
"Hawley's Condensed Chemical Dictionary", 11th Edition, 1987, Reinhold Company, Inc., p. 1038.
E. Grabowski and J. E. Gillott, "Effect of Replacement of Silica Flour With Silica Fume on Engineering Properties of Oilwell Cements at Normal and Elevated Temperatures and Pressures", Cement and Concrete Research, vol. 19, pp. 333-344 (1989).
M. Grinrod, B. Vassoy and E. O. Dingsoyr, "Development and Use of a Gas-Tight Cement", IADC/SPE 17258 (1988).

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