A tool for severing or assisting in the severing of a conduit includes a housing defining a void arranged, in use, to at least partially encircle a conduit and an at least one void access, the void access having a void access inlet in fluid communication with the housing and a void access outlet being in fluid communication with the housing void. At least one propellant source is located within the housing. An ignition mechanism is provided for igniting the propellant source and at least one modifying material. Upon ignition, the propellant source deflagrates, creating at least one stream of combustion products, the stream of combustion products flowing out of the tool through the void access into the void, the void access channelling the stream of combustion products towards the conduit, the stream of combustion products combining with the modifying material to sever or assist in severing the conduit.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
A tool for severing a conduit includes a housing defining a void that encircles a conduit to be severed. There is at least one propellant source located within the housing. Upon ignition by an ignition mechanism, the propellant source deflagrates, creating at least one stream of combustion products. The combustion products flow out of the tool through at least one void access and into the void. The void access channels the combustion products towards the conduit. The stream of combustion products combines with a modifying material to sever or assist in severing the conduit. A method of severing a conduit using the tool is provided.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
A method of removing material from a target is described. The method comprises the steps of providing a tool, the tool having at least one propellant source; pressurising the tool to a pressure higher than the environmental pressure; igniting at least one of the propellant source(s) to form a combustion zone; and directing combustion products generated at the combustion zone along at least one tool flow path. The tool flow path(s) is selectively openable or closable, such that upon exiting the tool flow path(s) the combustion products interact with a target, the interaction causing material to be removed from the target.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
4.
A TOOL FOR SEVERING OR ASSISTING IN THE SEVERING OF A CONDUIT
A severance tool for severing a target comprises a housing; at least one propellant source; a plurality of nozzles; a nozzle holder adapted, in use, to encircle the target to be severed, the nozzle holder being adapted to hold the nozzles; a trigger mechanism adapted to activate the at least one propellant source; and a centralising means adapted, in use, to create relative movement between the target and the nozzle holder to centralise the target with respect to the nozzle holder.
B24C 5/02 - Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
E21B 29/00 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground
5.
A TOOL FOR SEVERING OR ASSISTING IN THE SEVERING OF A CONDUIT
A tool for severing or assisting in the severing of a conduit comprises a housing defining a void arranged, in use, to at least partially encircle a conduit and at least one void access. Each void access has an inlet and an outlet. Each inlet is in fluid communication with the housing and each outlet is in fluid communication with the void. The tool further comprises at least one propellant source located within the housing, an ignition mechanism for igniting each propellant source and at least one modifying material. Upon ignition, each source deflagrates, creating at least one stream of combustion products. Each stream flows out of the tool through each access into the void. Each void access channels each stream towards the conduit. Each stream combines with each modifying material to sever or assist in severing the conduit.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
6.
A TOOL FOR SEVERING OR ASSISTING IN THE SEVERING OF A CONDUIT
A tool for severing or assisting in the severing of a conduit is described. The tool comprises a housing defining a void, the void arranged, in use, to at least partially encircle a conduit and an at least one void access, the/each void access having an inlet and an outlet, the/each void access inlet being in fluid communication with the housing and the/each void access outlet being in fluid communication with the housing void. The tool further comprises an at least one propellant source located within the housing, an ignition mechanism for igniting the/each propellant source and an at least one modifying material. Upon ignition, the/each propellant source deflagrates, creating an at least one stream of combustion products, the/each stream of combustion products flowing out of the tool through the/each void access in to the void, the/each void access channelling the/each stream of combustion products towards the conduit, the/each stream of combustion products combining with the/each modifying material to sever or assist in severing the conduit.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
A tool for manipulating a tubular, such as casing or production tubing, in a downhole environment, this described. The tool comprises 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.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
A tool for penetrating a tubular as described. The tool comprises at least one length of linear shaped charge, a carrier adapted to support the/each length of linear shaped charge, and at least one detonation mechanism for detonating the/each length of linear shaped charge. Upon detonation of the/each length of linear shaped charge, a length of material is projected outwardly from the/each length of linear shaped charge towards an internal surface of the tubular, which is thereby penetrated. The at least one length of linear shaped charge is arranged such that, upon detonation, the trajectory of at least one portion of the projected material intersects the trajectory of at least one other portion of projected material at or adjacent the internal surface of the tubular.
E21B 29/02 - Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windowsDeforming of pipes in boreholes or wellsReconditioning of well casings while in the ground by explosives or by thermal or chemical means
An improved plug for sealing a tubular as described. The improved plug comprises a plug body, the plug body comprising a propellant and an initiator adapted to initiate the propellant upon a signal. Upon initiation the propellant deflagrates causing the plug body to at least partially disintegrate.
An apparatus for at least partially closing a throughbore is described. The apparatus comprises an apparatus housing, the apparatus housing defining a throughbore and a plurality of closure elements, each closure element being adapted to move between a retracted position, in which the throughbore is fully open, and a deployed position, in which the throughbore is at least partially closed, at least a portion of the movement of each closure element between the retracted position and the deployed position being rotational.
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