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:
Jul. 31, 2007
Filed:
Aug. 20, 2004
Louis J. Wardlaw, Houston, TX (US);
Louis J. Wardlaw, Houston, TX (US);
Cinaruco International S.A. Calle Aguilino de la Guardia, Panama I, PA;
Abstract
A well tool and method for heating and depositing first and second charges of selective temperature melting metal alloys for repairing failure spots along a section of a tubular conduit, such as casing, in a subterranean well. A fuel charge is provided and is ignited to first melt the lower temperature melting metal alloy charge and thereafter the higher temperature metal alloy charge, such that a metal precipitate is formed from the heated higher temperature melting metal alloy charge. The housing defines a sacrificial wall which is opened or cleared as the higher temperature metal alloy charge melts, thus enabling the precipitate of the higher temperature melting alloy charge to be discharged from the housing to form a bridge for subsequent movements thereacross of the lower temperature melting alloy charge, into the well immediate the area of the failure spots. The failure spots are filled and/or covered by the precipitate and the lower temperature metal alloy charge to enhance the integrity of the tubular conduit such that production or other efforts may be continued within the well.