A blade includes a blade body extending a blade length and having a blade depth. The blade also includes a flat, arranged at a forward face, extending a flat length, less than the blade length. The blade further includes at least one slant, arranged at the forward face, the at least one slant being coupled to the flat and positioned at a slant angle, wherein the at least one slant includes a cutting edge.

An apparatus includes a gauge cutter, a lead impression block (LIB), a locking pin, and a locking device. The gauge cutter has a gauge cutter tubular body, a gauge cutter head, and an orifice. The LIB has an LIB body and an LIB head. The LIB is fixed in a first position within the orifice of the gauge cutter by being connected to an inner circumferential surface of the gauge cutter tubular body using a shear pin. The locking pin is disposed around the LIB body. The locking device is disposed around the inner circumferential surface of the gauge cutter tubular body and is configured to mate with the locking pin to hold the LIB in a second position within the gauge cutter. The second position includes a portion of the LIB body located within the orifice and the LIB head located outside of the orifice.

A fishing operation may include actuating a blind ram above the wellhead to seal around the wireline; pulling out a portion of the wireline out of the wellhead; cutting the portion of the wireline; rigging up a coiled tubing blowout preventer on top of the blind ram; connecting a wire within a coiled tubing to the wireline; connecting a coiled tubing bottom hole assembly to the coiled tubing; opening the blind ram and running in hole the coiled tubing into the wellbore; pulling, with the wire, the wireline inside the coiled tubing as the coiled tubing is lowered into the wellbore; lowering the coiled tubing to reach a depth within the wellbore containing a stall or stuck point in the tubular string; cutting the wireline with a wire cutter of the coiled tubing bottom hole assembly; and pulling out the coiled tubing with the wireline.

A fishing operation may include actuating a blind ram above the wellhead to seal around the wireline; pulling out a portion of the wireline out of the wellhead; cutting the portion of the wireline; rigging up a coiled tubing blowout preventer on top of the blind ram; connecting a wire within a coiled tubing to the wireline; connecting a coiled tubing bottom hole assembly to the coiled tubing; opening the blind ram and running in hole the coiled tubing into the wellbore; pulling, with the wire, the wireline inside the coiled tubing as the coiled tubing is lowered into the wellbore; lowering the coiled tubing to reach a depth within the wellbore containing a stall or stuck point in the tubular string; cutting the wireline with a wire cutter of the coiled tubing bottom hole assembly; and pulling out the coiled tubing with the wireline.

A wireline cutting tool. The wireline cutting tool comprises an elongated tubular body. A knife housing resides within the tubular body proximate an upper end, while a plunger resides within the tubular body proximate a lower end. An electric wireline passes through a bore of the knife housing and the plunger en route to an electrical connection sub. The electrical connection sub includes a pin that transmits signals from the electric wireline down to a downhole tool. The plunger is configured to slide up the bore of the lower sub in response to a first upward shear load applied by the wireline. This causes the plunger to act against knives residing within the knife housing. The knives are configured to travel up the bore of the upper sub in response to a second upward shear load applied by the plunger, pinching the wireline until severed. The second shear load is greater than the first shear load, creating a two-stage cutting tool.

A wireline cutting tool. The wireline cutting tool comprises an elongated tubular body. A knife housing resides within the tubular body proximate an upper end, while a plunger resides within the tubular body proximate a lower end. An electric wireline passes through a bore of the knife housing and the plunger en route to an electrical connection sub. The electrical connection sub includes a pin that transmits signals from the electric wireline down to a downhole tool. The plunger is configured to slide up the bore of the lower sub in response to a first upward shear load applied by the wireline. This causes the plunger to act against knives residing within the knife housing. The knives are configured to travel up the bore of the upper sub in response to a second upward shear load applied by the plunger, pinching the wireline until severed. The second shear load is greater than the first shear load, creating a two-stage cutting tool.

The present invention relates to a downhole line separation tool for submerging into a casing in a wellbore, the downhole line separation tool having a first tool end, a second tool end and a tool axis, comprising a tool housing having a first housing part and a second housing part, an electrical motor arranged within the first housing part and powered through a wireline connected to the first tool end, an annular separation element having an element end facing away from the first tool end and being rotatably connected within the second housing part, and a rotatable shaft arranged within the second housing part and rotated by the electrical motor for rotating the annular separation element, wherein the second housing part comprises a sleeve part having a sleeve end, at least part of the annular separation element projecting from the sleeve end further away from the first tool end than the sleeve, the second housing part comprising at least one projecting part extending further away from the first tool end than the annular separation element along the tool axis. Moreover, the present invention also relates to a downhole system comprising an upper casing connected to a lower casing and arranged in the wellbore.

The present invention relates to a downhole line separation tool for submerging into a casing in a wellbore, the downhole line separation tool having a first tool end, a second tool end and a tool axis, comprising a tool housing having a first housing part and a second housing part, an electrical motor arranged within the first housing part and powered through a wireline connected to the first tool end, an annular separation element having an element end facing away from the first tool end and being rotatably connected within the second housing part, and a rotatable shaft arranged within the second housing part and rotated by the electrical motor for rotating the annular separation element, wherein the second housing part comprises a sleeve part having a sleeve end, at least part of the annular separation element projecting from the sleeve end further away from the first tool end than the sleeve, the second housing part comprising at least one projecting part extending further away from the first tool end than the annular separation element along the tool axis. Moreover, the present invention also relates to a downhole system comprising an upper casing connected to a lower casing and arranged in the wellbore.

A cable head line cutter tool comprising an internal mandrel anchored to a line and releasably held in an initial position by a locking mechanism disposed within an outer housing of the cable head cutter tool. When a tensile load is applied to the line sufficient to overcome a mechanical resistance acting upon the locking mechanism, and maintained for a duration sufficient to overcome a hydraulic resistance acting upon the locking mechanism, the internal mandrel may become released from the locking mechanism and allowed to travel within the outer housing free of the locking mechanism. In embodiments, the cable head line cutter tool may comprise one or more such locking mechanisms acting independently or in coordination. If the tensile load applied to the line is sufficient to release the mandrel from each of the one or more locking mechanisms and maintained for sufficient duration, the mandrel may cause a line cutter device disposed within the cable head line cutter tool to cut the line. Alternatively, the mandrel may be returned to the initial position prior to cutting the line by reducing or relaxing the tensile load applied to the line.

A cable head line cutter tool comprising an internal mandrel anchored to a line and releasably held in an initial position by a locking mechanism disposed within an outer housing of the cable head cutter tool. When a tensile load is applied to the line sufficient to overcome a mechanical resistance acting upon the locking mechanism, and maintained for a duration sufficient to overcome a hydraulic resistance acting upon the locking mechanism, the internal mandrel may become released from the locking mechanism and allowed to travel within the outer housing free of the locking mechanism. In embodiments, the cable head line cutter tool may comprise one or more such locking mechanisms acting independently or in coordination. If the tensile load applied to the line is sufficient to release the mandrel from each of the one or more locking mechanisms and maintained for sufficient duration, the mandrel may cause a line cutter device disposed within the cable head line cutter tool to cut the line. Alternatively, the mandrel may be returned to the initial position prior to cutting the line by reducing or relaxing the tensile load applied to the line.