Ignitor, system and method of electrical ignition of exothermic mixture
AssigneeInterwell P&A AS
InventorsStian Tøndel, Kent-Andre Bomann, Michael Skjold
Life of this patent
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Abstract
A system and a method of an ignitor for electrical ignition of an exothermic mixture to be used in wells, for the purposes of reinstatement of a barrier in well(s), subterranean storage reservoirs for a variety of potential environmental damaging materials such as CO2, radioactive storage, and other uses. Additionally, the ignitor may include a housing with a compartment within the housing, a first exothermic mixture of at least a metal and an oxide provided in the compartment, a first electrode connectable to a first terminal of a power supply, and a second electrode connectable to a second terminal of the power supply.
Claims13
An ignitor for use in a wellbore, the ignitor comprising:
- a housing;
- a compartment provided within the housing;
- a first exothermic mixture of at least a metal and an oxide provided in the compartment,
- wherein the first exothermic mixture comprises fine-grained particles of metal and
- oxide particles having a particle size between 0.1 and 1 mm;
- a first electrode connectable to a first terminal of a power supply;
- and
- a second electrode connectable to a second terminal of the power supply;
- wherein at least parts of the first and second electrodes are in contact with the first exothermic mixture,
- wherein the first electrode and the second electrode are provided at a distance from each other, and
- wherein, upon appliance of a voltage above a predetermined threshold value between the first and second electrodes, an electromagnetic field is created in the first exothermic mixture between the first and second electrodes.
A method of activating an exothermic mixture comprising:
- locating a second exothermic mixture at a desired position in a well,
- locating an ignitor in proximity of the second exothermic mixture, the ignitor
- comprising:
- a housing;
- a compartment provided within the housing;
- a first exothermic mixture provided in the compartment, wherein the first exothermic mixture comprises fine-grained particles of metal and oxide particles having a particle size between 0.1 and 1 mm;
- a first electrode connectable to a first terminal of a power supply;
- a second electrode connectable to a second terminal of the power supply;
- wherein the first electrode and the second electrode are provided at a distance from each other;
- and
- applying a voltage above a certain threshold value between the first and second electrodes thereby creating an electromagnetic field in the first exothermic mixture between the first and second electrodes.
Dependencies are inferred from the claim text.