Use of scleroglucan as high temperature additive for cement slur

Details Use of scleroglucan as high temperature additive for cement slur Use of scleroglucan as high temperature additive for cement slur

1992-07-31

1994-04-12

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

106209, 106730, E21B 3314, C04B 2438, C04B 2416, C04B 1404

Patent

active

053017536

ABSTRACT:
In the cementing of oil wells, gas wells, or geothermal wells, wherein, under appropriate conditions, a suitable drilling fluid is injected, then optionally a slug fluid and finally a composition comprising water, a cement, at least one viscosity-enhancing additive, optionally at least one retarding agent and optionally at least one silica characterized in that the viscosity-enhancing agent is a scleroglucan solution. It applies particularly to the high temperature cementing of wells.

REFERENCES:
patent: 4457372 (1984-07-01), Doster et al.
patent: 4462836 (1984-07-01), Baker et al.
patent: 4718491 (1988-01-01), Kholer et al.
patent: 5082577 (1992-01-01), Kohler et al.

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