Patents by Inventor Daniel Sylvie

Daniel Sylvie 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).

  • Solid gas migration control additives based on latex powders for cementing applications
    Patent number: 8020618
    Abstract: Solid latex powders are employed as additives to control gas migration during the cementation of subterranean wells. Preferably, the latex additives are based on vinyl-acetate or styrene-butadiene based polymers. The additives are particularly useful in low-temperature applications. Methods to prepare cement slurries comprising the latex additives, and methods pertaining to the cementation of subterranean wells are also presented.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 20, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Barlet-Gouedard Véronique, Ermel Michel, Daniel Sylvie
  • Gas Migration Prevention Solid Additive Based on Crosslinked PVA Microgel for Cementing Applications
    Publication number: 20080161445
    Abstract: A gas migration prevention additive for use in cementing wells comprising a solid crosslinked poly(vinyl)alcohol microgel.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 3, 2008
    Inventors: Barlet-Gouedard Veronique, Ermel Michel, Daniel Sylvie
  • Solid Gas Migration Control Additives Based on Latex Powders for Cementing Applications
    Publication number: 20080156493
    Abstract: A gas migration prevention additive for use in cementing wells comprising a solid latex powder.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 3, 2008
    Inventors: Barlet-Gouedard Veronique, Ermel Michel, Daniel Sylvie