A tool for suspending in a well retrieves various metal debris from the well, and includes an elongated tool body with a plurality of magnets included in a plurality longitudinal ridges which are circumferentially spaced. In the method a plurality of magnets can be positioned within openings, recesses, or pockets in each ridge, and held in place by one or more retaining plates, the tool being connected to a drill string and lowered into a well.

A tool for suspending in a well retrieves various metal debris from the well, and includes an elongated tool body with a plurality of magnets included in a plurality longitudinal ridges which are circumferentially spaced. In the method a plurality of magnets can be positioned within openings, recesses, or pockets in each ridge, and held in place by one or more retaining plates, the tool being connected to a drill string and lowered into a well.

Provided, in one aspect, is a downhole magnetic debris removal apparatus. The downhole magnetic debris removal apparatus, in one aspect, includes a housing having a longitudinal axis, and a plurality of magnets arranged as one or more Halbach arrays of magnets coupled to the housing, the one or more Halbach arrays of magnets having a strong side and a weak side.

Provided, in one aspect, is a downhole magnetic debris removal apparatus. The downhole magnetic debris removal apparatus, in one aspect, includes a housing having a longitudinal axis, and a plurality of magnets arranged as one or more Halbach arrays of magnets coupled to the housing, the one or more Halbach arrays of magnets having a strong side and a weak side.

Systems and methods for fishing a metal object from a subterranean well include a fishing tool with housing, the housing being an elongated member having an internal bore. A first electromagnetic assembly is located within the internal bore of the housing and a second electromagnetic assembly is located at an outer diameter surface of the housing, the second electromagnetic assembly being moveable between a contracted position and an extended position where the second electromagnetic assembly extends outward from the housing. The first electromagnetic assembly is operable to generate a first magnetic force with an adjustable magnitude. The second electromagnetic assembly is operable to generate a second magnetic force with an adjustable magnitude, the first magnetic force and the second magnetic force having a same magnetic polarity.

Systems and methods for fishing a metal object from a subterranean well include a fishing tool with housing, the housing being an elongated member having an internal bore. A first electromagnetic assembly is located within the internal bore of the housing and a second electromagnetic assembly is located at an outer diameter surface of the housing, the second electromagnetic assembly being moveable between a contracted position and an extended position where the second electromagnetic assembly extends outward from the housing. The first electromagnetic assembly is operable to generate a first magnetic force with an adjustable magnitude. The second electromagnetic assembly is operable to generate a second magnetic force with an adjustable magnitude, the first magnetic force and the second magnetic force having a same magnetic polarity.

A tool for suspending in a well retrieves various metal debris from the well, and includes an elongated tool body with a plurality of magnets included in a plurality longitudinal ridges which are circumferentially spaced. In the method a plurality of magnets can be positioned within openings, recesses, or pockets in each ridge, and held in place by one or more retaining plates, the tool being connected to a drill string and lowered into a well.

A tool for suspending in a well retrieves various metal debris from the well, and includes an elongated tool body with a plurality of magnets included in a plurality longitudinal ridges which are circumferentially spaced. In the method a plurality of magnets can be positioned within openings, recesses, or pockets in each ridge, and held in place by one or more retaining plates, the tool being connected to a drill string and lowered into a well.

Apparatus and methods for penetrating a downhole target within a wellbore include providing a body with a longitudinal axis, a first end, and a second end into a wellbore, the body having a nozzle at the first end. The nozzle is adapted to project a medium in a direction generally parallel to the longitudinal axis to affect a downhole target. An actuator in communication with the medium is usable to initiate the apparatus. The nozzle can be provided with a geometry configured for projecting the medium in a pattern that separates the downhole target into at least two portions. The medium can include a ferromagnetic material that becomes associated with the downhole target to facilitate recovery of the target or portions thereof using a retrieval device having a magnetic element.

Apparatus and methods for penetrating a downhole target within a wellbore include providing a body with a longitudinal axis, a first end, and a second end into a wellbore, the body having a nozzle at the first end. The nozzle is adapted to project a medium in a direction generally parallel to the longitudinal axis to affect a downhole target. An actuator in communication with the medium is usable to initiate the apparatus. The nozzle can be provided with a geometry configured for projecting the medium in a pattern that separates the downhole target into at least two portions. The medium can include a ferromagnetic material that becomes associated with the downhole target to facilitate recovery of the target or portions thereof using a retrieval device having a magnetic element.