The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2020
Filed:
Jul. 01, 2016
Shell Oil Company, Houston, TX (US);
Jelle Hofstee, Rijswijk, NL;
Antonius Leonardus Maria Wubben, Rijswijk, NL;
Djurre Hans Zijsling, Rijswijk, NL;
SHELL OIL COMPANY, Houston, TX (US);
Abstract
An annular space surrounding an expandable well tubular () is sealed by: —a concave seal pusher assembly () with concave pusher elements comprising buckling joints () of which assembly () a first end is secured at a selected first location () of the outer surface of the unexpanded well tubular (); —an annular elastomeric sealing ring () arranged with an inwardly tapered first end thereof against an outwardly tapered second end () of the concave seal pusher assembly (); —a set of staggered and overlapping steel support strips () arranged around a second end of the sealing ring () and connected at one end thereof to a selected second location () of the outer surface of the unexpanded tubular (); —expanding and thereby shortening the tubular () to push the inwardly tapered end of the sealing ring over the outwardly tapered end () of the seal pusher assembly () and buckling the staggered strips () against the outer surface () of the annular space surrounding the expanded tubular () to compress the sealing ring () and seal off the annular space.