Matches 1 - 50 out of 133 1 2 3 >


Match Document Document Title
8146668 Downhole tubular lifter and method of using the same  
A method of raising a tubular, comprising attaching a lifter to a tubular associated with a wellbore, and operating the lifter to transmit a downward force to a subterranean formation via a surface...
8146672 Method and apparatus for retrieving and installing a drill lock assembly for casing drilling  
A method of installing a drilling tool at a lower end of a string of casing suspended in a borehole employs a setting tool run by wireline. The setting tool is latched to a drilling tool connected...
8122960 Spoolable coiled tubing spear for use in wellbores and methods of using same  
Coiled tubing spears for retrieving a section of cut coiled tubing comprises a mandrel having attachment members, e.g., spears, at upper and lower ends for facilitating connection of the upper end...
8066078 Overshot tool and method  
An overshot tool is provided for interconnecting and sealing between a lower tubular (C) in a well and an upper tubular (30). A tubular expander sleeve (36) and an overshot sleeve (26) are...
8002032 Hydraulic overshot with removable setting and testing core  
A hydraulic overshot apparatus designed to slide over plain end tubing and set by applying hydraulic fluid, under pressure, via a hydraulic setting port, into a center chamber which allows pressure...
7854258 Self-anchoring device with force amplification  
A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable...
7845431 Retrieval tool with slips for retrieving bottom hole assembly during casing while drilling operations  
A casing-while-drilling bottom hole assembly is releasably connected with a casing string. A retrieval tool is run into the casing string and latched to the bottom hole assembly. Slips are mounted...
7828062 Downhole tool  
An extension sub for a downhole fishing tool, the extension sub comprising a tubular having a threaded pin end and a threaded box end, the tubular having an interior wall defining a bore, and...
7828052 Downhole force generator  
A well tool for applying a pulling or a pushing force to an object in an interior of a well bore comprising: a) an inner member comprising a first elongated member, a second elongated member and an...
7793729 Gate valve and method of controlling pressure during casing-while-drilling operations  
A safety valve has a body with a passage extending through it that intersected by a chamber and inclined guide surfaces located in the chamber. A single slab gate with an aperture has ramp surfaces...
7690430 Well casing extraction accessories and method  
A tool for extracting well pipe casings resembles an enlarged pipe-thread tap. The tool is designed to be suspended under and driven by the traveling rotary table and hydraulic vertical drive...
7661477 System and method for unsticking a tool stuck in a wellbore  
An unsticking assembly for releasing a tool that is stuck in a wellbore including a first anchor actuatable between an engaging position wherein the first anchor engages a wall of the wellbore and...
7617867 Overshot tool  
An overshot tool includes a grapple, a torque sub rotationally fixed to the grapple and a deformable member in operable communication with the torque sub. The torque sub is responsive to torsional...
7607903 Stator tube removal and installation device  
An apparatus for removing a stator tube from a position about a rotor of a progressing cavity pump is provided. The apparatus includes an actuator assembly having a base and a piston which is...
7578348 Overshot tool for retrieving an object in a well and methods of use therefor  
An overshot tool for retrieving an object in a well includes a housing having a housing bore with upper and lower portions. A cam having a cam bore is carried in the upper portion of the bore. The...
7575051 Downhole vibratory tool  
A vibratory tool for downhole use is capable of letting a wireline or other tools pass a passage therethrough that can be subsequently closed by landing a plug on a seat. The dump valve is disposed...
7559361 Downhole force generator  
A well tool for applying a pulling or a pushing force to an object in an interior of a well bore comprising: a) a inner member comprising an first elongated member, a second elongated member and an...
7556101 Downhole retrieving tool and method  
Disclosed herein is a downhole retrieving tool. The tool includes, a tubular member with a deformable portion having a reduced internal dimension, and a swage member engagable with the reduced...
7552764 Tubular handling device  
A tubular handling apparatus comprising a slotted member having a plurality of elongated slots each extending in a direction, a recessed member slidably coupled to the slotted member and having a...
7503388 Circumferentially loaded slip-type overshot retrieval tool  
Overshot fishing tools for retrieving objects, i.e., “fish” lodged within a wellbore are disclosed. The overshot fishing tool comprises a housing having a housing bore with at least one recess dis...
7357183 Magnetic fishing tool and method  
An apparatus and method for retrieving metal objects. The apparatus includes a housing with an inner part, with the housing having a first wall. The apparatus further includes a sleeve disposed...
7267168 Spider with discrete die supports  
The spider, arranged for support on a drilling rig, is fitted with a plurality of slips peripherally distributed about a slip bowl. Each slip has a plurality of pipe gripping dies distributed...
7163059 Method for releasing stuck drill string  
A method for releasing a drill string stuck against a wall of a well bore due to pressure differential between the hydrostatic pressure of a fluid in the well bore and the pressure of a formation...
7137454 Apparatus for facilitating the connection of tubulars using a top drive  
A method and apparatus for facilitating the connection of tubulars using a top drive which, in one aspect, the apparatus includes a body connectable to said top drive. The body includes at least...
7096952 Latch mechanism guide  
An apparatus and method for guiding a fish into engagement with a latch mechanism on a fishing tool, by expanding the ends of a set of fingers into contact with a bore hole. The ends of the fingers...
7096951 Method and apparatus for retrieving an object from a well bore  
A fishing tool apparatus for retrieving an object from within a well bore, wherein the object has an opening for receiving the apparatus, comprises a support rod, an expandable sleeve, and a...
7077205 Method and device to free stuck objects  
A method of freeing stuck objects (16) from a bore (14) comprises running a string (12) into the bore (14), the string (12) including a flow modifier, such as a valve, for producing variations in...
7077204 Whip retrieval method and apparatus  
The retrieval tool includes a cylindrical member having a body, an inner passage, a guide cylinder and an engaging member. The engaging member may slide within the cylindrical member in order to...
7051810 Downhole force generator and method for use of same  
A downhole force generator (60) adapted to be moved to a target location within a wellbore (70) for interaction with a well tool (74) previously positioned in the wellbore (70) comprises a downhole...
7036595 Removal of tubulars from wells  
Slips slidably disposed on a mandrel for lowering into a well inside a tubular to be removed from the well move outwardly to engage the tubular upon withdrawing the mandrel carrying the slips from...
7021382 Downhole axial force generating tool  
An axial force generating tool for applying a force on a structure positioned within a borehole is taught. The tool includes a housing (19) sized to fit within the borehole in which the tool is...
6988551 Jar with adjustable trigger load  
A jar provided with an adjustable triggering load has a housing defining an anvil surface and a mandrel, movable relative to the housing under an applied load, defining a hammer surface to impact...
6896050 Latching system for maintaining position of component within a downhole drill string section  
A latching system for maintaining the position of a component within a downhole drill string section during operation of a drill string. One preferred latching system embodiment has a shoe member...
6848506 Rotary driven retrieval tool for horizontal directional drilling operations  
A rotating inner member is used to drive operation of a retrieval tool connected to a dual-member drill string. The retrieval tool preferably has a gripping assembly adapted to receive rotational...
6848507 Expandable wirefinder and method for use of same  
An expandable wirefinder (60) for locating a wire downhole comprises a sleeve (62) and a dual collet assembly (72). The dual collet assembly (72) has first and second collet members (78, 82) each...
6758267 Process and arrangement for retrieving of equipment from bore holes  
There is referred to a process for retrieving equipment (70, 72, 90) which is stuck, from a bore hole, where the equipment is connected to a tool and is brought to the surface, and the method is...
6742584 Apparatus for facilitating the connection of tubulars using a top drive  
An apparatus for facilitating the connection of tubulars using a top drive, which apparatus comprises a body (2; 102) connectable to said top drive, said body (2; 102) comprising at least one...
6729407 Method for removing gravel pack screens  
A method of removing a gravel packed screen to reach another zone is described. The method involves a bottom hole assembly comprising an isolation device for the screen and a tool to latch on to...
6719044 Wear bushing running and retrieval tools  
Devices and methods for selectively emplacing a wear bushing in a wellhead housing and removing it therefrom. A drill string-mounted running tool is used to selectively engage the wear bushing...
6615919 Well pipe extraction apparatus  
A well pipe extraction apparatus for removing a groundwater monitoring well consisting of PVC pipe from the ground. The well pipe extraction apparatus includes a wire rope, a soft eye formed at an...
6578635 Lining removal method, system and components thereof  
A method of removing lining from a tubing in a well includes: reaming at least a portion of the lining material; cutting at least a segment of the lining along a spiral path; engaging the lining...
6564885 Up-hole overshot and safety drilling apparatus  
The drilling apparatus includes a safety sub mountable to the drill string outer end to retain the combination of an overshot assembly and an overshot adaptor extending within the drill string...
6491116 Frac plug with caged ball  
A downhole tool for sealing a wellbore. The downhole tool includes a packer with a ball seat defined therein. A sealing ball is carried with the packer into the well. The movement of the sealing...
6386282 Safety switching system for clamping devices for pipes  
The invention relates to a safety switching system for a clamping device, provided with clamping wedges and operable by a flowing medium for holding and/or lowering or raising a pipe string, with...
6357528 One-trip casing cutting & removal apparatus  
A one-trip system for removing casing from a wellhead is described. The string includes a cutting device spaced at the required depth and a grappling device above it at the appropriate location. A...
6267180 Packer releasing tool and method for releasing a packer assembly from a wellbore  
The present invention provides a packer releasing tool for releasing a packer from a wellbore where the packer is coupled to a tubing string and has a releasing profile with a packer uphole...
6230797 Flow control device retrieval tool and method  
A retrieval tool provides enhanced functionality for retrieving an item of equipment from within a tubular string in a subterranean well. In a described embodiment, a retrieval tool includes an...
6213210 Removal of lining from tubing  
A cutting tool and a rotatable removal tool can be used together in a system and method for removing lining from tubing in a well. A particular cutting tool includes a mandrel, a sleeve mounted on...
6196309 Down hole pulling tool and method of use  
An apparatus for pulling objects from a well is described. The apparatus may comprise an elongated housing having an internal chamber. The housing will be connected to a work string such as...
6056049 Wellhead retrieving tool  
A wellhead retrieval tool is disclosed which is adaptable to a variety of configurations of wellheads. The tool comprises a spear through which a rotary cutter can operate. The tool can be...
Matches 1 - 50 out of 133 1 2 3 >