Apparatus and process for foamed cementing

B - Operations – Transporting – 28 – C

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166/17, 259/38,

B28C 5/00 (2006.01) B28C 5/06 (2006.01) B28C 5/38 (2006.01) E21B 33/13 (2006.01) E21D 20/02 (2006.01)

Patent

CA 1197862

ABSTRACT OF THE DISCLOSURE Process and apparatus for preparing a sub- stantially uniform, gas-containing cement slurry by directing two pressurized streams of a gas-containing hydraulic cement slurry to a common in-line focal point in a generally opposed fashion so that good mixing is achieved by the contact of the two streams. The process is particularly adapted for use in preparing "foamed" cement slurries for cementing subterranean voids such as well boreholes, groutholes, natural cavities and similar voids.

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