Method for annular sealing
AssigneeShell Oil Company
InventorsMartin Gerards Rene Bosma, Erik Kerst Cornelissen, Wilhelmus Christianus Maria Lohbeck, Franz Marketz
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Abstract
Method for sealing an annulus between two solid tubulars or between a solid tubular and a borehole which comprises the use of a thermoset or thermoplastic material in forming the seal between at least part of the outer surface of a tubular and at least part of the inner surface of the other tubular or the wellbore in which the seal is formed by expanding the inner tubular.
Claims28
Method for sealing an annulus between two solid tubulars or between a solid tubular and a borehole which comprises placing a thermoset or thermoplastic material between at least part of an outer surface of an expandable inner tubular and at least part of an inner surface of an outer tubular or the wellbore;
- and forming a seal by expanding the inner tubular against said thermoset or thermoplastic material;
- wherein one or more of the solid tubulars are reeled tubulars;
- and wherein said one or more of the solid tubulars are at least partially coated with an elastomer;
- and wherein electrical cables and/or hydraulic lines are present in the elastomeric coating.
Method for sealing an annulus between two solid tubulars or between a solid tubular and a borehole which comprises placing a, thermoset or thermoplastic material between at least part of an outer surface of an expandable tubular and at least part of an inner surface of an outer tubular or the wellbore;
- and forming a seal by expanding the inner tubular against said thermoset or thermoplastic material, in which at least a section of the expandable tubular is surrounded by a sleeve comprising a thermoplastic or thermoset material in which a number of burstable containers are embedded, which containers comprise a chemical activator which is released into the annular space surrounding the expanded tubular and which activator reacts with a cement or other chemical composition and/or the sleeve such that said chemical composition and/or the sleeve solidifies in response to the tubular expansion.
Dependencies are inferred from the claim text.