Wells – With heating – refrigerating or heat insulating means – Fuel supply or hot billet in well
Reexamination Certificate
2007-01-23
2007-01-23
Bates, Zakiya W. (Department: 3676)
Wells
With heating, refrigerating or heat insulating means
Fuel supply or hot billet in well
Reexamination Certificate
active
11140550
ABSTRACT:
A heating tool used for heating cement and/or a ground formation zone and melting billets in a down hole application for sealing oil and gas wells from gas migration. The heating tool has a billet loader which allows a plurality of billets to be loaded into the top of the tool and which billets then pass downward into a magazine and the lowermost heating area of the tool to rest on a billet retainer.
REFERENCES:
patent: 4408971 (1983-10-01), Karinsky et al.
patent: 4425775 (1984-01-01), Fuchs, Jr.
patent: 4967969 (1990-11-01), Griffith, III
La Rovere Thomas A.
Spencer Homer L.
Bates Zakiya W.
Spencer Homer L.
Uren John Russell
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