Patent ID: 7449664
Filing Date: 2008-11-11
Classification: E21B

Abstract:
1. Apparatus for heating a material used for sealing faults within the cement used for sealing an oil or gas well, said apparatus comprising a heating tool having a generally cylindrical configuration, a power cable to provide power to said heating tool, a wire line mounting means to mount said heating tool to a wire line for raising and lowering said heating tool within said oil or gas well, a hollow core within said heating tool for carrying meltable material in a solid state and for allowing said meltable material to transition from said solid state within said hollow core to a liquefied state within said hollow core upon heating of said meltable material in said solid state within said hollow core of said heating tool, pressure applying means within said heating tool for applying pressure to said meltable material following said liquefying of said meltable material within said hollow core of said heating tool and for forcing said liquefied material from said tool.