Patents by Inventor Kamalah Chang

Kamalah Chang 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).

  • Shunt isolation valve
    Patent number: 8701765
    Abstract: Gravel packing apparatus and method. The apparatus can include a conduit configured to extend between first and second wellbore intervals and through an isolation valve assembly separating the first and second intervals. A sliding sleeve can be configured to slide between an open position and a closed position. When the sliding sleeve is in the open position, it is configured to allow a flow of gravel slurry through the conduit between the first and second intervals, and when the sliding sleeve is in the closed position, it is configured to completely isolate the first and second intervals from each other.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: April 22, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Sidney Jasek, Kamalah Chang
  • SHUNT ISOLATION VALVE
    Publication number: 20130312960
    Abstract: Gravel packing apparatus and method. The apparatus can include a conduit configured to extend between first and second wellbore intervals and through an isolation valve assembly separating the first and second intervals. A sliding sleeve can be configured to slide between an open position and a closed position. When the sliding sleeve is in the open position, it is configured to allow a flow of gravel slurry through the conduit between the first and second intervals, and when the sliding sleeve is in the closed position, it is configured to completely isolate the first and second intervals from each other.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 28, 2013
    Applicant: Schlumberger Technology Corporation
    Inventors: Sidney Jasek, Kamalah Chang
  • Shunt isolation valve
    Patent number: 8453734
    Abstract: Gravel packing apparatus and method. The apparatus can include a conduit configured to extend between first and second wellbore intervals and through an isolation valve assembly separating the first and second intervals. A sliding sleeve can be configured to slide between an open position and a closed position. When the sliding sleeve is in the open position, it is configured to allow a flow of gravel slurry through the conduit between the first and second intervals, and when the sliding sleeve is in the closed position, it is configured to completely isolate the first and second intervals from each other.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 4, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Sidney Jasek, Kamalah Chang
  • SHUNT ISOLATION VALVE
    Publication number: 20110240290
    Abstract: Gravel packing apparatus and method. The apparatus can include a conduit configured to extend between first and second wellbore intervals and through an isolation valve assembly separating the first and second intervals, and a sliding sleeve configured to slide between an open position and a closed position, wherein the sliding sleeve in the open position is configured to allow a flow of gravel slurry through the conduit between the first and second intervals, and the sliding sleeve in the closed position is configured to completely isolate the first and second intervals from each other.
    Type: Application
    Filed: March 31, 2010
    Publication date: October 6, 2011
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sidney Jasek, Kamalah Chang