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:
Oct. 06, 2020
Filed:
Oct. 30, 2017
Shell Oil Company, Houston, TX (US);
Erik Kerst Cornelissen, Rijswijk, NL;
SHELL OIL COMPANY, Houston, TX (US);
Abstract
A method for sealing cavities in or adjacent to a cured cement sheath () surrounding a well casing () of an underground wellbore comprises: —providing an expansion device () with edged expansion segments () that is configured to be moved with the expansion segments () in an unexpanded configuration up and down through the well casing (); —moving the unexpanded expansion device () to a selected depth in the well casing (); and —expanding the edged expansion segments () at the selected depth, thereby plastically expanding a selected casing section and pressing the expanded casing section into the surrounding cement sheath thereby sealing the cavities.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile