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. 09, 2012
Filed:
Dec. 24, 2008
David Allan Elliott, Rijswijk, NL;
Petrus Cornelis Kriesels, Rijswijk, NL;
David Allan Elliott, Rijswijk, NL;
Petrus Cornelis Kriesels, Rijswijk, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A method of drilling a wellbore comprises arranging a drill string and an expandable tubular in the wellbore such that a lower end portion of the wall of the tubular extends radially outward and in an axially reverse direction so as to form an expanded section extending around a remaining section of the tubular, drill string extending through the remaining section, and axially extending the expanded section by moving the remaining section downward relative to the expanded section so that the lower end portion of the wall bends radially outward and in an axially reverse direction, wherein the expanded section covers the wellbore wall in an upper portion of the wellbore. The drill string is operated so as to drill a lower wellbore portion, and a compound is transferred between the lower wellbore portion and a layer of the earth formation surrounding the lower wellbore portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile