Patents by Inventor Alan R. Christie

Alan R. Christie 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).

  • Subsea intervention system
    Patent number: 6808021
    Abstract: A system that is usable with subsea wells that extend beneath a sea floor includes a station that is located on the sea floor and an underwater vehicle. The underwater vehicle is housed in the station and is adapted to service at least one of the subsea wells.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: October 26, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Thomas H. Zimmerman, John A. Kerr, Alan R. Christie
  • Subsea intervention
    Patent number: 6763889
    Abstract: A method and system of subsea intervention comprises lowering one or more assemblies of intervention equipment into the sea. Underwater marine units (such as remote operated vehicles or small submarines) may be employed to connect the assemblies to each other and to the subsea wellhead equipment. The subsea wellhead equipment includes a carrier line spool (e.g., coiled tubing spool, wireline spool, slickline spool) and equipment to inject a carrier line from the carrier line spool into the subsea well. The carrier line spool can be located underwater, such as on the sea floor or positioned above the subsea wellhead equipment. The carrier line spool can also be located on a sea vessel. Also, to switch tools, a carousel system having multiple chambers containing different types of tools can be used.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: July 20, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Gary L. Rytlewski, Thomas H. Zimmerman, Peter A. Goode, Ashley C. Kishino, John A. Kerr, Alan R. Christie
  • Subsea intervention system
    Publication number: 20020040783
    Abstract: A system that is usable with subsea wells that extend beneath a sea floor includes a station that is located on the sea floor and an underwater vehicle. The underwater vehicle is housed in the station and is adapted to service at least one of the subsea wells.
    Type: Application
    Filed: August 2, 2001
    Publication date: April 11, 2002
    Inventors: Thomas H. Zimmerman, John A. Kerr, Alan R. Christie
  • Subsea intervention
    Publication number: 20020040782
    Abstract: A method and system of subsea intervention comprises lowering one or more assemblies of intervention equipment into the sea. Underwater marine units (such as remote operated vehicles or small submarines) may be employed to connect the assemblies to each other and to the subsea wellhead equipment. The subsea wellhead equipment includes a carrier line spool (e.g., coiled tubing spool, wireline spool, slickline spool) and equipment to inject a carrier line from the carrier line spool into the subsea well. The carrier line spool can be located underwater, such as on the sea floor or positioned above the subsea wellhead equipment. The carrier line spool can also be located on a sea vessel. Also, to switch tools, a carousel system having multiple chambers containing different types of tools can be used.
    Type: Application
    Filed: August 2, 2001
    Publication date: April 11, 2002
    Inventors: Gary L. Rytlewski, Thomas H. Zimmerman, Peter A. Goode, Ashley C. Kishino, John A. Kerr, Alan R. Christie