Bisn Tec Ltd.

Bisn Tes Ltd.

Billy Clark

Paul Carragher

Lance D Underwood

Didhiti Talapatra

Bobby Chancellor

Andre Levchenko

Bryon Mullen

Lance Underwood

The present invention provides a downhole heating tool with an increased heating capacity for use in setting alloy plugs/seal in downhole target regions of wellbores, such as oil/gas wells. The increased heating capacity enables greater quantities of alloy to be melted in one operation. It also enables alloys with higher melting points to be melted in the downhole environment. To this end the heating tool comprises a plurality of discrete tubular heating units linked together by connection means that permit the movement of the tubular heating units relative to one another. The relative freedom of movement between the heating units facilitates a transition between a deployment configuration, in which the heating tool is optimised for deployment downhole, and a heating configuration, in which the heating tool adopts an expanded heating footprint within a downhole target region.

Downhole heating tools with increased heating capacity and associated tools and methods

A plug with composite reinforced end(s) and a mostly-bismuth-alloy middle section. At least one end comprises a composite material. One end is a composite, with a bismuth alloy and a particulate material of greater strength than the bismuth material. A plug having both ends of the composite material.

Plug with composite ends and method of forming and using

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Katy, TX, United States of America

Billy Clark