Patents by Inventor Chistophe M. Rayssiguier

Chistophe M. Rayssiguier 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).

  • Communicating with devices positioned outside a liner in a wellbore
    Patent number: 6378610
    Abstract: A downhole string includes a liner and devices positioned outside the liner. One or more control lines extend from the liner devices along the exterior of the liner to one or more connectors that provide connection points inside the liner. The one or more connectors may include electrical connectors (e.g., direct contact connectors), inductive connectors (e.g., inductive couplers), optical connectors (e.g., fiber optic connectors), and hydraulic connectors. The one or more control lines may be electrical lines, fiber optic lines, or hydraulic lines. The downhole string may also be used with a cement protector during cementing operations to protect both the inside of the liner as well as the one or more connectors attached to the liner. The cement protector includes a sleeve that isolates cement from the inside of the liner during a cementing operation so that a liner wiper plug is not needed. The cement protector is engageable to a pulling tool that is attached to a running tool.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: April 30, 2002
    Assignee: Schlumberger Technology Corp.
    Inventors: Chistophe M. Rayssiguier, Michael R. Johnson, Ronald E. Pringle, John A. Booker, Alexandre G. E. Kosmala
  • Apparatus and method for communicating with devices positioned outside a liner in a wellbore
    Patent number: 6302203
    Abstract: A downhole string includes a liner and devices positioned outside the liner. One or more control lines extend from the liner devices along the exterior of the liner to one or more connectors that provide connection points inside the liner. The one or more connectors may include electrical connectors (e.g., direct contact connectors), inductive connectors (e.g., inductive couplers), optical connectors (e.g., fiber optic connectors), and hydraulic connectors. The one or more control lines may be electrical lines, fiber optic lines, or hydraulic lines. The downhole string may also be used with a cement protector during cementing operations to protect both the inside of the liner as well as the one or more connectors attached to the liner. The cement protector includes a sleeve that isolates cement from the inside of the liner during a cementing operation so that a liner wiper plug is not needed. The cement protector is engageable to a pulling tool that is attached to a running tool.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: October 16, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Chistophe M. Rayssiguier, Michael R. Johnson, Ronald E. Pringle, John A. Booker