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US 6,454,493 B1Granted
Method for transporting and installing an expandable steel tubular
AssigneeShell Oil Company
InventorWilhelmus Christianus Maria Lohbeck
Life of this patent
Estimating the term…
Abstract
A method is provided for expanding an expandable steel tubular including the steps of: flattening the unexpanded tubular; transporting the flattened unexpanded tubular to a location at or near the site where the tubular is to be installed; unflattening the tubular before positioning the tubular at said site; and expanding the tubular along at least a substantial part of its length before or after the tubular has been positioned at said site.
Claims14
A method for transporting and installing a steel tubular into a underground borehole or other cavity, the method comprising the steps of:
- flattening the tubular;
- transporting the flattened tubular to a site where the tubular is to be installed into the underground borehole or other cavity;
- unflattening the tubular, thereby increasing the tubular roundness;
- positioning the unflattened tubular into the underground borehole or other cavity;
- and
- expanding the unflattened tubular alongside the inner wall of the underground borehole or other cavity at least a substantial part of its length after the unflattened tubular has been positioned in order to install the tubular in the underground borehole or other cavity at said site.
3 more elements
Dependencies are inferred from the claim text.