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WO/2014/042797A1 |
A connector to secure to the end of a cylindrical rod to transfer and distribute stress uniformly from the connector to the rod with a recess to cooperate with a retrieval tool to allow recovery of fractured rod strings or broken connect...
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WO/2014/031116A1 |
A method of freeing a pipe stuck in a subterranean well can include determining a location of a portion of the pipe stuck in the well, and penetrating and/or heating a sidewall of the pipe portion with a beam of light. A system for freei...
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WO/2014/028254A2 |
A hydraulic jar for delivering impacts downhole. The jarring mechanism includes a cup-type piston that moves through a seal bore. The cup is deformable in response to fluid pressure so that it expands each time it moves through the seal ...
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WO/2014/018642A1 |
A spearing device for use in removing casing from a wellbore is disclosed. The spearing device includes: a top sub; a bottom sub; a mandrel, coupled to the top and bottom subs, having an outer corrugated surface; a grapple having a corre...
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WO/2014/008260A1 |
The present disclosure is directed towards, in general, retrieval tools operable for conveyance within a wellbore extending below a wellsite surface, and methods of using such retrieval tools. One such retrieval tool comprises an annular...
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WO/2013/191564A1 |
A cable-operated jar (2) provided with a releasable coupling (22) arranged for connection to a piece of downhole equipment (1) is described, in which a mandrel (23) that is connected to a cable (3) is provided with a hammer section (2322...
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WO/2013/147996A2 |
Disclosed are fiber optic enabled casing collar locator systems including a wireline sonde or a coil tubing sonde apparatus configured to be conveyed through a casing string by a fiber optic cable. The sonde includes at least one permane...
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WO/2013/133718A1 |
A method of removing casing (3) from a well (1) is described, the method including the following steps: (A) setting a first sealing element (11) into fluid-sealing engagement with the inside of the casing (3); (B) lowering a flow-through...
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WO/2013/126358A1 |
A method of separating a riser, comprising providing a riser having an inner and an outer surface, a circumference of said outer surface, a longitudinal axis and a first end and a second end; radially surrounding said riser with an explo...
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WO/2013/115655A1 |
The present invention regards a method and an apparatus for retrieving a tubing (1201) from a well (100) at least partly filled with a liquid (1101), the tubing (1201) having a first end portion (A-A') and a second end portion (B-B'), wh...
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WO/2013/101333A2 |
An apparatus and method for retrieving debris from the well bore of an oil or gas well. The apparatus comprises a junk basket with a flow passage that allows fluid to be jetted out end of the tool while the tubing string is advanced to s...
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WO/2013/036805A9 |
Embodiments disclosed herein relate to a jar including the following: a mandrel; an outer housing slidably disposed about the mandrel; a ball stop housing disposed below the outer housing; a lower sub disposed below the ball stop housing...
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WO/2013/089753A1 |
Certain aspects and embodiments of the present invention are directed to a subsurface safety valve disposed in a wellbore through a fluid-producing formation. The subsurface safety valve can include a closure mechanism. In some embodimen...
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WO/2013/079573A1 |
The present invention relates to a pulling tool (1) for latching onto an object (30), such as a plug, downhole in a wellbore The pulling tool comprises a base element (10) extending in a longitudinal direction from a proximal end (10a) f...
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WO/2013/073949A1 |
An apparatus (1) and method for cutting and pulling of a casing (7, 7') in a well, where the apparatus (1) comprises: - a housing (2) connected to a wired connection (3); - a cutting tool (4) arranged in connection with the housing (2), ...
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WO/2013/059873A1 |
A downhole tool mechanism for applying a driving force, such as a cutter tool for cutting a line captured within the tool, comprises a resiliently compressible member for storing a compressive force; a retaining device for maintaining st...
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WO/2013/055330A1 |
A downhole valve for use in a well has a closure device that is biased closed to seal against flow through the central bore of the valve. A plurality of pistons are each coupled to a respective hydraulic control line into the valve. Each...
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WO/2013/043539A2 |
A downhole tool that includes a tractor for assisting movement of the tool through deviated portions of a wellbore. The tractor includes a working fluid that damps vibrations in the tractor by adjusting the viscosity in the fluid. In an ...
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WO/2013/040641A1 |
An apparatus for use in a downhole survey in conjunction with core sampling comprises a body adapted to receive a downhole surveying instrument, whereby the downhole surveying instrument can be conveyed along a borehole with the apparatu...
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WO/2013/028310A2 |
A vibratory tool for use in a tubular string to prevent sticking or to release a stuck string features a fluid operated dart valve working in conjunction with an impact sleeve to deliver continuous axial jarring blows in opposed directio...
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WO/2013/028402A2 |
A well tool can include an oscillator which varies a flow rate of fluid through the oscillator, and another oscillator which varies a frequency of discharge of the fluid received from the first oscillator. A method can include flowing a ...
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WO/2013/025516A2 |
A hydraulic connection mechanism for use in a wellbore comprises an upper connection running tool, a lower connection tool configured to engage the upper connection running tool and form a fluid communication pathway through the hydrauli...
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WO/2013/013136A1 |
A magnet assembly (10) can be attached to, or placed in the vicinity of, a conventional bell nipple assembly (120) to generate a magnetic field within the central bore of the bell nipple assembly. The magnetic field catches falling metal...
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WO/2013/009458A2 |
An apparatus includes an impervious body, a sealing element; an energy source, and a trigger. The impervious body is configured to prevent passage of fluid therethrough. The sealing element is disposed about the impervious body. The ener...
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WO/2012/129662A1 |
An overshot (10, 100, 200) for handling equipment (12) defining a spearhead point (14). The overshot (10, 100, 200) includes: a substantially elongated overshot body (16); a pair of lifting dogs (18) pivotally mounted to the overshot bod...
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WO/2012/122141A1 |
A method and apparatus for delivering repetitive jarring impacts to a stuck object downhole. The jarring tool is deployed on coiled tubing or other tubular well conduit, and fluid pressure is used to cycle the jar without reciprocating t...
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WO/2012/119186A1 |
An overshot (10) comprises a latching mechanism (12) for latching a member such as a spear point (14); and, an actuator (16) which actuates the latching mechanism (12). The latching mechanism (12) has a number of different operational st...
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WO/2012/120403A1 |
An excitation apparatus suitable for use downhole having interengaged masses at least in part confined or guided so as to be movable as an interengaged assembly on an axis, one mass ("rotatable mass") being rotatable relative to the othe...
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WO/2012/091982A2 |
Plug-inducing matter includes junk shot comprising members and swellable material substantially covering the members which are configured to swell upon exposure to wellbore fluids.
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WO/2012/091716A1 |
A jar comprises a housing including an anvil. In addition, the jar comprises a mandrel telescopically disposed within the housing and including a hammer. Further, the jar comprises an annular chamber radially positioned between the mandr...
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WO/2012/088132A2 |
The debris collection device operates on an eductor principle with motive fluid delivered from the surface into an eductor housing inlet. The eductor outlet goes into a surrounding annular space and splits with some flow going to the mil...
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WO/2012/083413A1 |
A downhole vibration tool for connection with a pipe string, including a housing, an unbalanced turbine assembly contained within the housing, an inlet for introducing a fluid into the unbalanced turbine assembly, and an outlet for disch...
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WO/2012/084227A1 |
The tool includes a bearing member (70), a traction assembly (72) of the object (28), movably mounted in a first direction relative to the bearing member (70). It includes a plurality of hooking members (160), mounted radially mobile rel...
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WO/2012/082463A2 |
A debris removal tool has a lower end pickup hose into which debris laden fluid is pulled when there is circulation through the debris removal tool from the surface. An anchor near the open end of the hose stabilizes the lower end near a...
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WO/2012/068662A1 |
A fail safe locking overshot device. The overshot device is connected to a hoisting line for retrieval of a spearhead. The device provides automatic engagement of a mechanical locking system through locking dogs for locking the lifting d...
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WO/2012/068674A1 |
A fail safe locking overshot device. The overshot device is connected to a hoisting line for retrieval of a spearhead. The device provides automatic engagement of a mechanical locking system through locking dogs for locking the lifting d...
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WO/2012/068054A2 |
Apparatus and method for adjusting spring preloading in a downhole tool. In one embodiment, a mechanism includes a nut and a piston. The nut is configured to axially compress a spring in the downhole tool. The piston is coupled to the nu...
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WO/2012/064829A1 |
A downhole tool incorporates a junk catcher with full body casing drift. It is made of an inner tubular member that conveys the hydraulic power or circulating fluid to rearward and outward facing jet nozzles for directly flushing downhol...
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WO/2012/064500A1 |
A casing spear may comprise a mandrel, and a slip assembly comprising at least one slip. The at least one slip may comprise a generally wedge-shaped surface positioned and configured to cause the at least one slip to move radially outwar...
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WO/2012/051169A1 |
A three-ring seal assembly is provided to seal across extrusion gaps of varying size when used during down hole fishing operations.
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WO/2012/047111A1 |
A cable cutting device (1) comprising a housing (6) and a transferring body (34), and wherein the one of the housing (6) or the transferring body (34) is connected to a running sleeve (2) of a running tool and the other of the housing (6...
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WO/2012/036854A2 |
A subterranean debris catcher swirls the incoming debris laden stream by putting grooves or spiral projections on the inside of the inlet pipe. In some embodiments the solids come out of openings in the side of the inlet pipe and in othe...
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WO/2012/030465A2 |
A fishing tool includes a grapple and an exciter in vibration transmissive communication with the grapple and method.
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WO/2012/024168A2 |
Fishing tools for retrieving objects, i.e., "fish," lodged within a wellbore are disclosed. The fishing tool comprises a tubular member having a tubular member bore with at least one profiled surface or insert disposed within or along th...
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WO/2012/009383A2 |
A power tong unit having a gear train in which one or more of the gears in the gear train have removable and replacement roller tooth elements, in lieu of conventional gear teeth. In one embodiment, the ring gear and pinion gears have ro...
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WO/2012/003084A2 |
Devices and methods for applying axial force for such uses as running and releasing tools or other articles within a wellbore. An installation system is described that includes a force generator used to generate axial forces. The install...
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WO/2011/153180A2 |
Methods of jarring include communicating between a surface command device and jars in a drill string, the drill string composed of spaced apart jars positioned in a corresponding plurality of wired and/or wireless pipe sections. The meth...
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WO/2011/153058A2 |
Magnetic retrieval tools for use in a wellbore or other tubular member to remove metallic debris. A magnetic retrieval tool includes a tool body having a central shaft with a plurality of ribs that project radially outwardly therefrom. T...
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WO/2011/149668A1 |
A cleanout assembly for removal of debris from a debris chamber in a wellbore cleaning tool. The cleanout assembly includes a mandrel, a boot radially surrounding the mandrel and a debris chamber defined radially between the mandrel and ...
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WO/2011/146251A1 |
A magnetic retrieval tool used for collecting metallic debris and material from within a wellbore or other surrounding downhole tubular. The tool includes a tool mandrel with a removable insert which contains one or more magnets. The ins...
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