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:
May. 07, 2002
Filed:
Mar. 30, 2000
Applicant:
Inventor:
Homer L. Spencer, Calgary, CA;
Assignee:
Tesla Industries Inc., Calgary, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 6/10 ;
U.S. Cl.
CPC ...
H05B 6/10 ;
Abstract
Apparatus and method for melting metal in the annulus of an oil or gas well and thereby sealing the annulus to prevent shallow gas leakage and the like. Conveniently, eutectic metal is positioned within the annulus between the production and surface casing of the well and above the well cement. An electrical inductive tool is lowered into position and used to provide the necessary heat to melt the metal. The electrical inductive tool may be removed following the sealing of the annulus. Radioactive tracers may be used with the eutectic metal to confirm the desired location for the melt to occur.