Patents by Inventor Jelle HOFSTEE

Jelle HOFSTEE 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 system for sealing an annulur space around an expanded well tubular
    Patent number: 10655425
    Abstract: An annular space surrounding an expandable well tubular (1) is sealed by: —a concave seal pusher assembly (5) with concave pusher elements comprising buckling joints (7) of which assembly (5) a first end is secured at a selected first location (2) of the outer surface of the unexpanded well tubular (1); —an annular elastomeric sealing ring (9) arranged with an inwardly tapered first end thereof against an outwardly tapered second end (8) of the concave seal pusher assembly (5); —a set of staggered and overlapping steel support strips (11) arranged around a second end of the sealing ring (9) and connected at one end thereof to a selected second location (3) of the outer surface of the unexpanded tubular (1); —expanding and thereby shortening the tubular (1) to push the inwardly tapered end of the sealing ring over the outwardly tapered end (8) of the seal pusher assembly (5) and buckling the staggered strips (11) against the outer surface (12) of the annular space surrounding the expanded tubular (1) to compre
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 19, 2020
    Assignee: SHELL OIL COMPANY
    Inventors: Jelle Hofstee, Antonius Leonardus Maria Wubben, Djurre Hans Zijsling
  • METHOD AND SYSTEM FOR SEALING AN ANNULUR SPACE AROUND AN EXPANDED WELL TUBULAR
    Publication number: 20180195363
    Abstract: An annular space surrounding an expandable well tubular (1) is sealed by: —a concave seal pusher assembly (5) with concave pusher elements comprising buckling joints (7) of which assembly (5) a first end is secured at a selected first location (2) of the outer surface of the unexpanded well tubular (1); —an annular elastomeric sealing ring (9) arranged with an inwardly tapered first end thereof against an outwardly tapered second end (8) of the concave seal pusher assembly (5); —a set of staggered and overlapping steel support strips (11) arranged around a second end of the sealing ring (9) and connected at one end thereof to a selected second location (3) of the outer surface of the unexpanded tubular (1); —expanding and thereby shortening the tubular (1) to push the inwardly tapered end of the sealing ring over the outwardly tapered end (8) of the seal pusher assembly (5) and buckling the staggered strips (11) against the outer surface (12) of the annular space surrounding the expanded tubular (1) to compre
    Type: Application
    Filed: July 1, 2016
    Publication date: July 12, 2018
    Inventors: Jelle HOFSTEE, Antonius Leonardus Maria WUBBEN, Djurre Hans ZIJSLING