Patents by Inventor David E. Sask

David E. Sask 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).

  • System and method for optimizing production in a well
    Patent number: 7849920
    Abstract: For optimizing well production, intervals are selected along a deviated wellbore, and a well test and treatment string is deployed in the wellbore. Each interval is then isolated to enable performance of desired testing. The test data obtained is evaluated to determine an appropriate remedial action which is then implemented via the well test and treatment string. The system and method enable the testing and treatment of a plurality of intervals along a horizontal well during the same run downhole.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: December 14, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Dhandayuthapani Kannan, David E. Sask, Lang Zhan, James G. Filas
  • SYSTEM AND METHOD FOR OPTIMIZING PRODUCTION IN A WELL
    Publication number: 20090159275
    Abstract: A technique is provided for optimizing well production. Intervals are selected along a deviated wellbore, and a well test and treatment string is deployed in the wellbore. Each interval is then isolated to enable performance of desired testing. The test data obtained is evaluated to determine an appropriate remedial action which is then implemented via the well test and treatment string. The system and method enable the testing and treatment of a plurality of intervals along a horizontal well during the same run downhole.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dhandayuthapani Kannan, David E. Sask, Lang Zhan, James G. Filas
  • Tubing fill and testing valve
    Patent number: 7267177
    Abstract: The present invention provides for a valve in a tubing string that allows the tubing string to fill with well fluids as the string is assembled and lowered into a well bore, but can be used to check pressure integrity of the tubing string during various stages of the assembly.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: September 11, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Dinesh R. Patel, David E. Sask
  • Tubing fill and testing valve
    Patent number: 7063156
    Abstract: The present invention provides for a valve in a tubing string that allows the tubing string to fill with well fluids as the string is assembled and lowered into a well bore, but can be used to check pressure integrity of the tubing string during various stages of the assembly.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: June 20, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Dinesh R. Patel, David E. Sask
  • Tubing fill and testing valve
    Publication number: 20040026091
    Abstract: The present invention provides for a valve in a tubing string that allows the tubing string to fill with well fluids as the string is assembled and lowered into a well bore, but can be used to check pressure integrity of the tubing string during various stages of the assembly.
    Type: Application
    Filed: April 16, 2003
    Publication date: February 12, 2004
    Inventors: Dinesh R. Patel, David E. Sask
  • Safeguarded method and apparatus for fluid communiction using coiled tubing, with application to drill stem testing
    Patent number: 5638904
    Abstract: A safeguarded method and apparatus for providing fluid communication with coiled tubing, said coiled tubing comprising more particularly coiled-in-coiled tubing, having a inner tube and an outer tube, and including multicentric coiled-in-coiled tubing and its method of assembly, the safeguarded method having particular applicability to drill stem testing.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: June 17, 1997
    Assignee: Nowsco Well Service Ltd.
    Inventors: John G. Misselbrook, David E. Sask