Method and apparatus for removing a downhole casing from a well on a single trip. A downhole tool assembly is arranged on a work string having a downhole pull tool, a spear tool, motor unit and cutting device. The downhole pull tool is set inside a first casing string and the spear tool, motor unit and cutting device are located inside a second casing string, located through the first casing string. The downhole pull tool and spear tool can be configured to grip the respective casings during cutting of the second casing string. The cut casing section can then be pulled using the downhole pull tool to dislodge the casing section, whereupon via attachment to the spear tool, the cut casing section can be removed from the well. The assembly can be re-set at shallower depths in the event that the cut casing section cannot be dislodged for removal.

Method and apparatus for removing a downhole casing from a well on a single trip. A downhole tool assembly is arranged on a work string having a downhole pull tool, a spear tool, motor unit and cutting device. The downhole pull tool is set inside a first casing string and the spear tool, motor unit and cutting device are located inside a second casing string, located through the first casing string. The downhole pull tool and spear tool can be configured to grip the respective casings during cutting of the second casing string. The cut casing section can then be pulled using the downhole pull tool to dislodge the casing section, whereupon via attachment to the spear tool, the cut casing section can be removed from the well. The assembly can be re-set at shallower depths in the event that the cut casing section cannot be dislodged for removal.

A method for pulling a tubular out of a subterranean well including the steps of: i) lowering a work string into the well which includes a perforating tool and a tubular pulling tool; ii) connecting the tubular pulling tool to the tubular and apply a pulling tension to the tubular; iii) activating the perforating while the applied pulling tension to the tubular is maintained; iv) immediately upon activating the perforating tool and while maintaining pulling tension to the tubular, pulling the tubular on the work string out of the subterranean well; wherein a cut in the tubular is formed prior to or simultaneously with step iii); and wherein the cut is arranged such that the tubular can be pulled out of the subterranean well during step iv).

Further, a system for pulling a tubular was also disclosed.

A method for pulling a tubular out of a subterranean well including the steps of: i) lowering a work string into the well which includes a perforating tool and a tubular pulling tool; ii) connecting the tubular pulling tool to the tubular and apply a pulling tension to the tubular; iii) activating the perforating while the applied pulling tension to the tubular is maintained; iv) immediately upon activating the perforating tool and while maintaining pulling tension to the tubular, pulling the tubular on the work string out of the subterranean well; wherein a cut in the tubular is formed prior to or simultaneously with step iii); and wherein the cut is arranged such that the tubular can be pulled out of the subterranean well during step iv).

Further, a system for pulling a tubular was also disclosed.

A method of freeing a stuck pipe in a wellbore includes positioning a pipe freeing tool within an annulus of the stuck pipe, the pipe freeing tool including a body and two or more arms coupled to and extending from the body, and activating the two or more arms of the pipe freeing tool to extend outwards from the body to apply a force to the stuck pipe. Another method of freeing a stuck pipe in a wellbore includes determining a stuck point along a drillstring comprising the stuck pipe, and activating a pipe freeing tool coupled to the stuck pipe to apply a force to the stuck pipe, wherein the force moves the stuck pipe away from a surface of the wellbore and towards a center of the wellbore, and the pipe freeing tool includes a plurality of expandable disc elements.

A method of freeing a stuck pipe in a wellbore includes positioning a pipe freeing tool within an annulus of the stuck pipe, the pipe freeing tool including a body and two or more arms coupled to and extending from the body, and activating the two or more arms of the pipe freeing tool to extend outwards from the body to apply a force to the stuck pipe. Another method of freeing a stuck pipe in a wellbore includes determining a stuck point along a drillstring comprising the stuck pipe, and activating a pipe freeing tool coupled to the stuck pipe to apply a force to the stuck pipe, wherein the force moves the stuck pipe away from a surface of the wellbore and towards a center of the wellbore, and the pipe freeing tool includes a plurality of expandable disc elements.

A bottomhole assembly for performing a sidetracking operation in a casing of a wellbore. A fluid intensifier is configured to receive fluid and configured to increase a pressure of the fluid. A fluid jetting nozzle is associated with a body of the bottomhole assembly. A fluid jetting nozzle is fluidly coupled to the fluid intensifier and is configured to receive pressurized fluid from the fluid intensifier. A fluid jetting nozzle is configured to cut a window into the casing via the pressurized fluid. A side arm is movable between a closed position wherein the side arm is retracted and a guiding position wherein the side arm is extended. The side arm is configured to contact the casing in the guiding position to guide the body within the casing. A hook is configured to couple to the cut window and remove the cut window from the casing.

A bottomhole assembly for performing a sidetracking operation in a casing of a wellbore. A fluid intensifier is configured to receive fluid and configured to increase a pressure of the fluid. A fluid jetting nozzle is associated with a body of the bottomhole assembly. A fluid jetting nozzle is fluidly coupled to the fluid intensifier and is configured to receive pressurized fluid from the fluid intensifier. A fluid jetting nozzle is configured to cut a window into the casing via the pressurized fluid. A side arm is movable between a closed position wherein the side arm is retracted and a guiding position wherein the side arm is extended. The side arm is configured to contact the casing in the guiding position to guide the body within the casing. A hook is configured to couple to the cut window and remove the cut window from the casing.

A downhole casing cutting and removal assembly (10) and method of use thereof, the assembly comprising a work string (23) with a cutting mechanism (18) and plurality of resettable anchor mechanisms (20B-20D). The arrangement allows a test pull to be made following the cut by an anchor mechanism closer to the upper end of the cut casing section than an anchor mechanism (20B-20D) located close to the cutting mechanism. Time is thus saved by not having to raise and lower a single anchor mechanism (20B-20D) between the cutting position and the upper end of the cut casing section to undertake a test pull.

A circulation test tool and method of performing a circulation test in a wellbore during single-trip casing cutting and removal. An anchor mechanism (20), a mechanical-set retrievable packer (22) and a cutting mechanism (18) allow gripping and cutting of casing (14) with the mechanical set-retrievable packer (22) being set after the cut to carry out the circulation test. The well is kept under control during the cut by application of tension on the drill string to set the packer (22) at any time. The arrangement provides full annulus flow pass at the packer during cutting. Embodiments describe additional features of a drill to dress a cement plug or a settable bridge plug.