System for lining a section of a wellbore
AssigneeShell Oil Company
InventorJörg Ernst Eckerlin
Life of this patent
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Abstract
A system for lining a section of a wellbore with an expandable tubular element is provided. The system includes an elongate string extending into the wellbore, the string being provided with the tubular element in the unexpanded form thereof whereby the tubular element surrounds a lower portion of the string. The string is further provided with an expander arranged at a lower end part of the tubular element and anchoring means for anchoring an upper end part of the tubular element in the wellbore.
Claims11
A system for lining a section of a wellbore with an expandable tubular element, comprising an elongate string extending into the wellbore, said string being provided with the tubular element in the unexpanded form thereof whereby the tubular element surrounds a lower portion of the string, the string further being provided with an expander arranged at a lower end part of the tubular element and anchor for anchoring an upper end part of the tubular element in the wellbore, wherein said upper end part of the tubular element extends into an outer tubular element arranged in the wellbore and surrounding said upper end part, and wherein the anchor includes radial expansion means for radially expanding the upper end part of the tubular element against the outer tubular element.
A method of lining a section of a wellbore with an expandable tubular element, comprising:
- drilling a section of the wellbore using a drill string;
- anchoring the upper part of the expandable tubular element in the wellbore using an anchoring means;
- releasing the drill string from the expandable tubular element;
- and
- pulling an expander by means of the drill string through the expandable tubular element so as to radially expand the expandable tubular element.
Dependencies are inferred from the claim text.