Patents by Inventor B. Piot

B. Piot 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).

  • Cement compositions for cementing of wells enabling gas channelling in the cemented annulus to be inhibited by right-angle setting
    Patent number: 4767460
    Abstract: The cement compositions according to the invention are designed for cementing wells, in particular oil and gas or geothermal wells, and for withstanding very high temperatures.A combination of styrene-butadiene latex and a polyoxyethylenated nonylphenol stabilizer of this latex is provided. Cement sets at a right angle and gas migration in the annulus is prevented.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: August 30, 1988
    Assignee: Dowell Schlumberger Incorporated
    Inventors: P. Parcevaux, B. Piot, P. Sault