Patents by Inventor Corjon Patrice

Corjon Patrice 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).

  • Tool for measuring pressure in an oil well
    Patent number: 4802359
    Abstract: The invention relates to a tool for measuring pressure in the annular space lying between casing and the production string of an oil well. The tool comprises two sliding elements, with the first element being temporarily locked in a section of the string constituting a circulating valve and with the second element carrying a pressure sensor which receives the pressure reigning in the annular space via a duct and orifices of the circulating valve after they have been brought into register.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: February 7, 1989
    Assignee: Schlumberger Technology Corporation
    Inventor: Corjon Patrice