Abstract

A tool (1) for manipulating a target with combustion products from a propellant, includes a housing (2) defining a chamber (12), a propellant source located within the chamber (12), an ignition mechanism (28) for igniting propellant (26) at the propellant source, and at least one chamber outlet (30) for combustion products from the propellant source. The tool (1) is configured to automatically open the chamber outlet (30) from a closed condition, following ignition of the propellant (26) at the propellant source. Methods of manipulating a target using the tool are also described.

IPC Classes  ?

• 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

Abstract

A tool (1) for manipulating a target with combustion products from a propellant includes a housing (2) defining a chamber (12), at least two propellant sources located within the chamber and spaced apart one from the other, an ignition mechanism for igniting propellant (26) at the propellant sources, and at least one chamber outlet (30) for combustion products from the propellant sources. Methods of manipulating a target using the tool are also described.

IPC Classes  ?

• 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

Abstract

A penetrating tool for penetrating an obstruction across a conduit is described. The penetrating tool (10) comprises a body (12) having a longitudinal axis (28), the body defining an internal void (14) and at least one explosive shaped charge (20) located within the internal void, the shaped charge being positioned to project detonation products in a direction parallel to the body longitudinal axis, the shaped charge being located adjacent a lower section (16) of the body, the body lower section forming a barrier (30) between the shaped charge and the obstruction. The penetrating tool further comprises a detonator (40) for detonating the at least one shaped charge and the body further defines an external engagement portion (32) for, in use, engaging with the obstruction to be penetrated. Upon engagement with the obstruction (52) to be penetrated, the position of the barrier with respect to the shaped charge and with respect to the obstruction to be penetrated is fixed.

IPC Classes  ?

• 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

Abstract

A tool for fracturing at least one tubular is described. The tool comprises a plurality of parallel columns of explosives and a detonation system configured to detonate the columns of explosives. The columns are arranged such that upon detonation, at least a portion of the Shockwave propagating in a direction outwardly from the tool from one column combines with at least a portion of the Shockwave propagating in a direction outwardly from the tool from another column to create a combined Shockwave of greater intensity than either of the Shockwaves which formed the combined Shockwave.

IPC Classes  ?

• E21B 43/117 - Shaped-charge perforators
• E21B 43/116 - Gun or shaped-charge perforators
• E21B 43/1185 - Ignition systems
• E21B 43/263 - Methods for stimulating production by forming crevices or fractures using explosives
• 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

Abstract

A tool for manipulating a tubular in a downhole environment is described. The tool 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 control mechanism. Upon ignition of the propellant source, the propellant source is operable to deflagrate, creating at least one stream of combustion products, the chamber directing the/each stream of combustion products through the/each outlet, towards the tubular to be manipulated, at least one parameter of the/each stream of combustion products being changeable by the control mechanism.

IPC Classes  ?

• 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

Abstract

A colliding tool for severing a target in a wellbore as described. The tool comprises a housing having a first chamber, the first chamber containing an explosive charge; and an at least one detonator connected to the explosive charge, the at least one detonator being insulated from temperature in the wellbore. In use, the at least one detonator is configured to simultaneously initiate a first explosion at a first end of the explosive charge and a second explosion at a second end of said explosive charge.

IPC Classes  ?

• 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

Abstract

A tool for manipulating a tubular. The tool comprising a plurality of tool sections arranged in a stack, each tool section comprising a propellant source having an upper surface and lower surface, the upper and lower surfaces being separated by an outer surface extending around the perimeter of the propellant source, a first flame retardant material being associated with the propellant source upper surface and a second flame retardant material being associated with the propellant source lower surface. The tool further comprises at least one modifying agent provided in or adjacent the tool sections or generated by the tool sections; and an ignition mechanism for igniting the propellant source outer surface of each tool section, such that upon ignition, each propellant source is adapted to deflagrate, creating a stream of combustion products, the stream of combustion products extending around, and flowing away from, the outer surface of said propellant source.

IPC Classes  ?

• 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
• F42C 9/10 - Time fuzesCombined time- and percussion- or pressure-actuated fuzesFuzes for timed self-destruction of ammunition the timing being caused by combustion
• F42D 1/06 - Relative timing of multiple charges