The Dow Chemical Company

Dowell Schlumberger Incorporated

James C Ritter

William R McIntire

This invention is directed to a mixing apparatus for mixing liquids and particulate solids which comprises an enclosed cylindrical housing with an inlet means and a liquid/solid outlet means coupled to said housing and a slinger disposed within said housing which comprises a flat disc with a plurality of circumferentially spaced vertical vanes and a cylindrical outer wall at the outer periphery of the cylindrical flat disc.

Mixing apparatus

Process and apparatus for preparing a substantially 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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Tulsa, OK, United States of America

James C Ritter