Patents by Inventor Salem Lotfi Elsayed

Salem Lotfi Elsayed 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).

  • Method and apparatus for installing a wireline for logging or other operations in an under-balanced well
    Patent number: 8899338
    Abstract: An improved apparatus and a method to insert a wireline through a blow out preventer to log an underbalanced open hole well without killing the well or causing formation damage while maintaining well control during the process. A dual throated blow out preventer (10) provides a moveable sealing element (1210, 1402) to allow a wireline (13) and a drill string (25) to be placed in a well for assembly, then seals off the dual throat to isolate the drill string from the wireline, thereby permitting pressure to be maintained on both the wireline through a standard packoff arrangement (1218) and on the drill string using the rams of the blow out preventer (10).
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: December 2, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Salem Lotfi Elsayed, Waqar Khan
  • METHOD AND APPARATUS FOR INSTALLING A WIRELINE FOR LOGGING OR OTHER OPERATIONS IN AN UNDER-BALANCED WELL
    Publication number: 20110174503
    Abstract: An improved apparatus and a method to insert a wireline through a blow out preventer to log an underbalanced open hole well without killing the well or causing formation damage while maintaining well control during the process. A dual throated blow out preventer (10) provides a moveable sealing element (1210, 1402) to allow a wireline (13) and a drill string (25) to be placed in a well for assembly, then seals off the dual throat to isolate the drill string from the wireline, thereby permitting pressure to be maintained on both the wireline through a standard packoff arrangement (1218) and on the drill string using the rams of the blow out preventer (10).
    Type: Application
    Filed: July 20, 2009
    Publication date: July 21, 2011
    Applicant: Services Petroliers Schlumberger
    Inventors: Salem Lotfi Elsayed, Waqar Khan