Patents by Inventor Patrick Sault

Patrick Sault has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composition for a lightweight cement slurry for cementing oil and gas wells
    Patent number: 4721160
    Abstract: A lightweight cement slurry composition having a density in the range of 1.2 to 1.6, containing a solid extender agent and an SBR latex. The ratio of the liquid volume to the slurry volume should be less than 70% and preferably less than 63%. The lightweight slurry then presents a most attractive set of properties which could not be obtained previously, and in particular gas channelling is controlled.
    Type: Grant
    Filed: August 19, 1985
    Date of Patent: January 26, 1988
    Assignee: Dowell Schlumberger Incorporated
    Inventors: Philippe Parcevaux, Patrick Sault