Downhole tool with a propellant charge
AssigneeSpex Corporate Holdings Limited
InventorsJamie Oag, Rae Younger, Sidney Dantuma Johnston
Life of this patent
Estimating the term…
Abstract
A tool for manipulating a tubular, such as casing or production tubing, in a downhole environment, includes a housing defining a chamber, the chamber having at least one outlet, a propellant source located within the chamber and an ignition mechanism for igniting the propellant source. Upon ignition of the propellant source, the propellant deflagrates, creating at least one stream of combustion products, the chamber directing the stream of combustion products through the/each outlet, towards the tubular to be manipulated, the/each stream of combustion products combining with at least one modifying agent to manipulate the tubular.
Claims33
A tool for manipulating a tubular in a downhole environment, the tool comprising:
- a housing defining a chamber, the chamber having at least one outlet;
- a propellant source located within the chamber;
- an ignition mechanism for igniting the propellant source;
- a sealing mechanism;
- and
- at least one modifying agent provided in or adjacent the tool or generated by the tool;
- wherein upon ignition of the propellant source, the propellant source is adapted to deflagrate, creating at least one stream of combustion products, the chamber directing the stream of combustion products through the/each outlet, towards the tubular to be manipulated, the/each stream of combustion products combining with at least one modifying agent to manipulate the tubular.
A method of manipulating a tubular in a downhole environment, the method comprising:
- a) positioning a tool adjacent a tubular to be manipulated, wherein the tool is configured to anchor to the tubular and comprises:
- a housing defining a chamber, the chamber having at least one outlet;
- a propellant source located within the chamber;
- an ignition mechanism for igniting the propellant source;
- and a sealing mechanism;
- and wherein at least one modifying agent is provided in or adjacent the tool, or is generated in use of the tool;
- b) anchoring the tool to the tubular;
- c) activating the sealing mechanism;
- and
- d) igniting the propellant source such that at least one stream of combustion products is generated, the chamber directing the/each stream of combustion products through the/each outlet, the outlet directing the/each stream of combustion products towards the tubular to be manipulated, whereby the/each stream of combustion products, including the modifying agent, manipulate the tubular.
Dependencies are inferred from the claim text.