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.
Claims7
A tool for manipulating a material, the tool comprising:
- a body defining a chamber having an associated void therein;
- at least one propellant source located within the chamber;
- at least one nozzle, the/each nozzle having an inlet and an outlet, the/each outlet being in selective fluid communication with the void of the chamber;
- and
- at least one mechanism for igniting the/each propellant sources, creating a combustion zone on the propellant source;
- wherein at least one of the propellant sources is configured to combust upon ignition to release a combustion jet which, in use, fills the void of the chamber, and
- wherein the chamber includes an opening mechanism configured to prevent fluid communication between the void of the chamber and the/each nozzle inlet until pressure in the void reaches a predetermined pressure whereupon the combustion jet flows into the nozzle inlet, the combustion jet then flowing out of the tool through the/each nozzle outlet towards, and into engagement with, a material to be manipulated.
Dependencies are inferred from the claim text.