Abstract: A casing mill for downhole casing milling has multiple elongated cutter bases hingedly connected to a main body by a plurality of positioning arms. An operating mechanism within the main body of the casing mill, actuated by fluid flow, moves the cutter bases to an extended position. Multiple cutters fixed to the cutter bases are then positioned to engage a casing end surface. Preferably, the cutters are arranged in vertically spaced apart rows, such that when one row is worn out in the milling process a visual indication is seen at the surface, as the casing mill drops to the next row of cutters.

Abstract: A wellbore casing cutting tool having multiple expandable cutter bases. The leading or downhole ends of the cutter bases are tapered, forming a tapered nose profile, and are covered with hardened cutting material to form a cutting surface. The cutting surface on the tapered nose profile can be used to remove a cement sheath within a casing string being cut or milled.

Abstract: A casing mill for downhole casing milling has multiple elongated cutter bases hingedly connected to a main body by a plurality of positioning arms. An operating mechanism within the main body of the casing mill, actuated by fluid flow, moves the cutter bases to an extended position. Multiple cutters fixed to the cutter bases are then positioned to engage a casing end surface. Preferably, the cutters are arranged in vertically spaced apart rows, such that when one row is worn out in the milling process a visual indication is seen at the surface, as the casing mill drops to the next row of cutters.

Abstract: A downhole cutting tool for cutting sections or “windows” in tubular strings in wellbores has rotating cutters and a lower stabilizer section, both actuated by a fluid operated mechanism. The stabilizer section keeps the downhole cutting tool centralized in the tubular string. The cutters may have a robust profile and structure which enhances the window cutting function and permits passage of an operating rod to operate the stabilizer section.

Abstract: A casing mill for downhole casing milling has multiple elongated cutter bases hingedly connected to a main body by a plurality of positioning arms. An operating mechanism within the main body of the casing mill, actuated by fluid flow, moves the cutter bases to an extended position. Multiple cutters fixed to the cutter bases are then positioned to engage a casing end surface. Preferably, the cutters are arranged in vertically spaced apart rows, such that when one row is worn out in the milling process a visual indication is seen at the surface, as the casing mill drops to the next row of cutters.

Abstract: A downhole cutting tool having a jetted top bushing. The cutting tool has a plurality of blades which rotate from a first, retracted position to a second, extended position. In this extended position, cutting surfaces on the blades contact the tubular wall, and rotation of the cutting tool enables cutting through the tubular. The blades are rotated by an internal piston which pushes down on portions of the blades in response to fluid flow through the tool. A plurality of fluid outlets or jets are positioned above (uphole from) the blades, whereby a portion of the fluid being pumped downhole flows out of the jets, into the annulus and onto the blades, keeping them clean and enhancing lifting of cuttings to the surface. The fluid outlet flow area may be easily changed, without disassembly of the cutting tool, by changing jets to different flow areas, or blanked off if desired.

Abstract: An apparatus for supporting tubular goods and wellbore tools that can be used to perform down-hole operations in oil and gas wells. The support apparatus has a minimal footprint and requires minimal surface area. The support apparatus can be used to jack and remove casing and other pipe, as well as other rig-less downhole well operations.

Abstract: A wellbore casing cutting tool, having multiple blades which rotate outwardly by a fluid operated mechanism, has multiple cutters on each blade. The cutters are preferably positioned on the blades such that the lowermost cutting edges of multiple cutters all bear on the surface of the casing being cut. The cutters are preferably made with a metal base, covered with hardened cutting material such as tungsten carbide or hardened cutting buttons. The metal wears away as cutting progresses, continually exposing fresh cutting surfaces. The multiple cutters permit cutting of long windows in casing walls, and the structure of the cutters results in relatively short metal cuttings, rather than long metal cuttings which can ball up downhole.

Abstract: An apparatus for supporting tubular goods and wellbore tools that can be used to perform down-hole operations in oil and gas wells. The support apparatus has a minimal footprint and requires minimal surface area. The support apparatus can be used to jack and remove casing and other pipe, as well as other rig-less downhole well operations.

Abstract: An apparatus for supporting tubular goods and wellbore tools that can be used to perform down-hole operations in oil and gas wells. The support apparatus has a minimal footprint and requires minimal surface area. The support apparatus can be used to jack and remove casing and other pipe, as well as other rig-less downhole well operations.

Abstract: A lifting apparatus for supporting tubular goods that can be used to perform down-hole operations in oil and gas wells. The lifting apparatus has push and pull capability, a minimal footprint, and requires minimal surface area to operate. The support apparatus can be used to jack and remove casing and other pipe, such as during plugging and abandonment operations, and to perform other rig-less downhole well operations.

Abstract: A rigless support for a downhole operation, such as cutting of an underwater casing in preparation for plug-and-abandonment. The unit has a movable base that can be positioned on a floating structure, such as a barge or a marine vessel and delivered to the site. A pair of piston rams support a swivel unit therebetween, with the swivel unit being driven by a hydraulic motor and driving a casing cutter.

Abstract: Casing cutter for severing multiple tubulars in a well bore has a pair of cutter blades pivotally mounted on a support body. The blades are pivotally mounted for gradual movement outside of the support body when downward force is applied to proximate ends of the cutter blades. The support body is rotated inside the innermost of the multiple tubulars, while the cutter blades sever the tubulars of progressively increasing diameter. Should the cutter blades or pivotal connections become unusable, the tool body can be rotated about the vertical axis and secured to a downhole string by the opposite end. A substitute pair of cutter blades are then engaged on the tool body and operated to cut the casings similar to the first set of the cutter blades.

Abstract: A cleanout system and method for removal of metal debris from a fluid flow, such a flow of re-circulated drilling mud employs one or more magnetic unit positioned in the path of the fluid for collecting metal particles from the flow. The magnetic unit has a removable magnet core positioned in a non-magnetic sleeve. When the core is removed from the sleeve the attracted metal particles are allowed to drop from the sleeve under gravity to facilitate their collection and disposal. A fluid deflector is positioned upstream from each magnetic unit, protecting the magnetic unit from direct impact by the strong flow. The magnetic units are allowed to pivot from side-to-side and adjust their position in the flow.

Abstract: A rigless support for a downhole operation, such as cutting of an underwater casing in preparation for plug-and-abandonment. The unit has a movable base that can be positioned on a floating structure, such as a barge or a marine vessel and delivered to the site. A pair of piston rams support a swivel unit therebetween, with the swivel unit being driven by a hydraulic motor and driving a casing cutter.

Abstract: Casing cutter for severing multiple tubulars in a well bore has a pair of cutter blades pivotally mounted on a support body. The blades are pivotally mounted for gradual movement outside of the support body when downward force is applied to proximate ends of the cutter blades. The support body is rotated inside the innermost of the multiple tubulars, while the cutter blades sever the tubulars of progressively increasing diameter. Should the cutter blades or pivotal connections become unusable, the tool body can be rotated about the vertical axis and secured to a downhole string by the opposite end. A substitute pair of cutter blades are then engaged on the tool body and operated to cut the casings similar to the first set of the cutter blades.

Abstract: A magnetic tool for retrieval of metal debris from a well bore particularly adapted for use in coil tubing systems. The tool has a cylindrical body and a plurality of separate magnet assemblies mounted on the tool body. The magnet assemblies are separated by spacers, which define a secondary settling area for the metal objects attracted to the magnetic tool.

Abstract: A connector for severed pipes in a wellbore has an elongated tubular mandrel, a sealing pack-off ring mounted on the mandrel, an activator ring for pressing against the pack-off ring and causing the pack-off ring to seal an interior of a casing above a shut-off valve. A grapple member is slidable mounted on the mandrel above the activator ring; the grapple member has an enlarged diameter plate, which rests on an upper edge of a severed casing. A production pipe, control lines and production casing can be lowered through the large opening in the mandrel and re-establish connection with the severed casing and production pipes.

Abstract: A cleanout system and method for removal of metal debris from a fluid flow, such a flow of re-circulated drilling mud employs one or more magnetic unit positioned in the path of the fluid for collecting metal particles from the flow. The magnetic unit has a removable magnet core positioned in a non-magnetic sleeve. When the core is removed from the sleeve the attracted metal particles are allowed to drop from the sleeve under gravity to facilitate their collection and disposal. A fluid deflector is positioned upstream from each magnetic unit, protecting the magnetic unit from direct impact by the strong flow. The magnetic units are allowed to pivot from side-to-side and adjust their position in the flow.

Abstract: A cleanout system and method for removal of metal debris from a fluid flow, such a flow of re-circulated drilling mud employs one or more magnetic unit positioned in the path of the fluid for collecting metal particles from the flow. The magnetic unit has a removable magnet core positioned in a non-magnetic sleeve. When the core is removed from the sleeve the attracted metal particles are allowed to drop from the sleeve under gravity to facilitate their collection and disposal. A fluid deflector is positioned upstream from each magnetic unit, protecting the magnetic unit from direct impact by the strong flow. The magnetic units are allowed to pivot from side-to-side and adjust their position in the flow.