Consumable downhole tools
First Claim
1. A method of reducing the structural integrity of a downhole tool comprising fabricating at least one load-bearing component of the tool from a thermally degradable material selected from the group consisting of thermoplastic material, a phenolic material, a composite material, and combinations thereof, wherein the thermally degradable material ignites and burns when brought into contact with heat and oxygen, and wherein the tool comprises a torch comprising a fuel load that produces heat and oxygen when burned.
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Accused Products
Abstract
A method of removing a downhole tool from a wellbore comprising contacting the tool with a heat source wherein the tool comprises at least one load-bearing component comprising a thermally degradable material. A method of reducing the structural integrity of a downhole tool comprising fabricating the load-bearing components of the tool from a thermally degradable material. A method of removing a downhole tool comprising mechanically milling and/or drilling the tool from a wellbore wherein the tool comprises at least one load bearing component comprising a phenolic resin wherein the phenolic resin comprises a rosole, a novalac or combinations thereof.
429 Citations
21 Claims
- 1. A method of reducing the structural integrity of a downhole tool comprising fabricating at least one load-bearing component of the tool from a thermally degradable material selected from the group consisting of thermoplastic material, a phenolic material, a composite material, and combinations thereof, wherein the thermally degradable material ignites and burns when brought into contact with heat and oxygen, and wherein the tool comprises a torch comprising a fuel load that produces heat and oxygen when burned.
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12. A method of removing a downhole tool from a wellbore comprising:
placing the tool within the wellbore, wherein the tool comprises; a tubular body; at least one load-bearing component comprising a thermally degradable material selected from the group consisting of a thermoplastic material, a phenolic material, a composite material, and combinations thereof, and wherein the thermally degradable material is acid-resistant; a torch body having a plurality of apertures disposed along a length of the torch body and positioned within the tubular body to form an annular space within the downhole tool; and a fuel load associated with the torch body, the fuel load being selectively convertible to heat and a source of oxygen for passage through at least one of the plurality of apertures to contact the at least one load-bearing component and consume at least a portion thereof; and igniting the fuel load to produce heat and oxygen, wherein the thermally degradable material ignites and bums when brought into contact with the heat and oxygen. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
Specification