Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit
AssigneeShell Oil Company
InventorsMartin Donnelly, Wilhelmus Christianus Maria Lohbeck, Robert Bruce Stewart
Life of this patent
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Abstract
A scrolled resilient sheet is installed against the inner surface of a fluid conduit using a carrier tool from which a resilient sheet having an average thickness more than 2 mm and an elastic or pseudoelastic recoverable strain of at least 0.6% is released so-that the sheet expands with an expansion force which is sufficiently high to allow the sheet to press itself into place alongside the inner surface of the conduit and to remain in place after installation.
Claims9
A method for installing a scrolled resilient sheet alongside the inner surface of a fluid conduit, the method comprising the steps of:
- scrolling the resilient sheet and securing the scrolled sheet to a carrier tool such that the carrier tool carrying the scrolled sheet can be moved through the conduit;
- moving the carrier tool to a location in the conduit where the resilient sheet is to be installed;
- and
- releasing the resilient sheet from the carrier tool thereby allowing the resilient sheet to expand towards the inner surface of the conduit,
- wherein the resilient sheet has an average wall thickness of at least 2 mm and an elastic strain or a pseudoelastic recoverable strain of at least 0.6% so as to induce the scrolled sheet to expand with an expansion force which is sufficiently high to allow the sheet to press itself into place alongside the inner surface of the conduit during installation and to remain in place after installation.
Dependencies are inferred from the claim text.