Sealing method and apparatus

Details Sealing method and apparatus Sealing method and apparatus

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2688635

According to the present invention there is provided an apparatus for forming a plug in a passsageway, the apparatus comprising a carrier which in use is lowered into the passageway, the carrier comprising an elongate body of a material resistant to creep which supports first and second spaced apart portions and a skirt that extends axially from a lower end of the carrier, the skirt being dimensioned to define a clearance between the skirt and the passageway; a body of material supported on the carrier, said material having a melting point which is higher than the temperature within the passageway and which expands as it solidifies; and means for melting the body of material such that melted material fills a space defined between the first and second portions, and flows into the clearance defined between the skirt and the passageway.

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