| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | FISHING TOOL | US12764905 | 2010-04-21 | US20100270018A1 | 2010-10-28 | Paul Howlett |
| A packer tool (10) for milling and retrieving a packer from the casing of a well bore is provided. The tool (10) comprises an upper milling portion (14), a lower attachment portion (16) at least partially located within the upper milling portion (14), and a debris retainer (28,128,228) for capturing milled cuttings within the tool (10). A method of milling and retrieving a packer using the tool is also provided. | ||||||
| 82 | Metal debris cleanout system and method | US12008637 | 2008-01-14 | US20080128347A1 | 2008-06-05 | David J. Ruttley |
| 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. | ||||||
| 83 | Electromagnetic anti-jam telemetry tool | US10905953 | 2005-01-27 | US07330397B2 | 2008-02-12 | Harini Ganesan; Nataliya Mayzenberg |
| A mud-pulse telemetry tool includes a tool housing, a motor disposed in the tool housing, and a magnetic coupling coupled to the motor and having an inner shaft and an outer shaft. The tool may also include a stator coupled to the tool housing, a restrictor disposed proximate the stator and coupled to the magnetic coupling, so that the restrictor and the stator adapted to generate selected pulses in a drilling fluid when the restrictor is selectively rotated. The tool may also include a first anti-jam magnet coupled to the too housing, and an second anti-jam magnet disposed proximate the first anti-jam magnet and coupled to the inner shaft and/or the outer shaft, wherein at least one of the first anti-jam magnet and the second anti-jam magnet is an electromagnet, and wherein the first anti-jam magnet and the second anti-jam magnet are positioned with adjacent like poles. | ||||||
| 84 | Downhole activated packer plug magnetic debris tool | US11804015 | 2007-05-16 | US20070267196A1 | 2007-11-22 | Maximiliano Mondelli; George Krieg; David Hebert; Dewayne Turner |
| A downhole magnetic debris tool is disclosed that may be connected to the bottom of a packer isolation plug. The downhole magnetic debris tool may include a magnetic shield assembly that shields the magnets and prevent the collection of magnetic debris as the packer isolation plug assembly is run into the well. The packer isolation plug assembly is inserted into the internal seal bore of a set packer. The assembly protects the seal bore from damage and prevents debris from moving downhole. The magnets of the downhole magnetic debris tool may be unsheathed upon removal of the packer isolation plug from the packer. The downhole magnetic debris tool may be used to collect magnetic debris that has collected on top of the packer. Additionally, the magnet shield assembly may act as a debris basket collecting downhole debris while the assembly is pulled from the hole. | ||||||
| 85 | Electromagnetic Anti-Jam Telemetry Tool | US10905953 | 2005-01-27 | US20060164917A1 | 2006-07-27 | Harini Ganesan; Nataliya Mayzenberg |
| A mud-pulse telemetry tool includes a tool housing, a motor disposed in the tool housing, and a magnetic coupling coupled to the motor and having an inner shaft and an outer shaft. The tool may also include a stator coupled to the tool housing, a restrictor disposed proximate the stator and coupled to the magnetic coupling, so that the restrictor and the stator adapted to generate selected pulses in a drilling fluid when the restrictor is selectively rotated. The tool may also include a first anti-jam magnet coupled to the too housing, and an second anti-jam magnet disposed proximate the first anti-jam magnet and coupled to the inner shaft and/or the outer shaft, wherein at least one of the first anti-jam magnet and the second anti-jam magnet is an electromagnet, and wherein the first anti-jam magnet and the second anti-jam magnet are positioned with adjacent like poles. | ||||||
| 86 | Magnetic tool for retrieving metal objects from a well bore when using coil tubing | US11089277 | 2005-03-24 | US20060042790A1 | 2006-03-02 | David Ruttley |
| 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. Each magnet assembly has one or more magnet member encased in a protective sleeve | ||||||
| 87 | Downhole fishing tool for retrieving metallic debris from a borehole | US10096268 | 2002-03-12 | US06629562B1 | 2003-10-07 | Mehmet Fidan |
| The invention is a system for retrieving loose metallic debris, such as stray radioactive marker bullets, from a borehole in a subterranean formation. The system can be used to retrieve stray radioactive marker bullets during placement of the radioactive marker bullets in the subterranean formation. The system utilizes a downhole fishing tool having at least one recessed magnetic surface for attracting and holding stray radioactive marker bullets. The recessed magnetic surface allows the fishing tool to be removed from the borehole without scraping off retrieved marker bullets that are held against the magnetic surface. | ||||||
| 88 | Apparatus for retrieving metal objects from a wellbore | US09602356 | 2000-06-22 | US06354386B1 | 2002-03-12 | David J. Ruttley |
| A tool for retrieving metal objects from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a plurality of magnet members, which can be arcuate or longitudinal, covering a majority surface area of the tool body. In the embodiment of the invention having longitudinal members, magnet protectors are secured immediately adjacent to a corresponding magnet member for deflecting striking force of the metal particles being attracted to the magnet during rotation of the tool. A trap space if formed between the magnet and an adjacent magnet protector for retaining more metal particles within the magnet assemblies. | ||||||
| 89 | Apparatus for retrieving metal objects from a wellbore | US09789876 | 2001-02-21 | US06308781B2 | 2001-10-30 | David J. Ruttley |
| A tool for retrieving metal objects from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a plurality of magnet members, which can be arcuate or longitudinal, covering a majority surface area of the tool body. In the embodiment of the invention having longitudinal members, magnet protectors are secured immediately adjacent to a corresponding magnet member for deflecting striking force of the metal particles being attracted to the magnet during rotation of the tool. A trap space if formed between the magnet and an adjacent magnet protector for retaining more metal particles within the magnet assemblies. | ||||||
| 90 | Magnetic assembly for use with a downhole casing perforator | US09478193 | 2000-01-05 | US06269877B1 | 2001-08-07 | Ian B. Zeer; Dennis V. Borgstrom |
| A magnetic assembly is used in wells that are lined with a metal casing so as to attract and collect resulting metal debris after perforation of the metal casing by a perforating tool. When the perforating tool was activated in the past, the metal debris typically fell downward inside of the metal casing and needed to be retrieved by a flushing or similar procedure. The present invention involves attaching a magnetic assembly to the bottom end of the perforator tool to collect the metal debris as it falls after perforation of the metal casing. The magnetic assembly includes a steel pipe filled with spaced magnetic discs, and also includes a guide shoe on one end of the pipe and a thread adaptor on the other end. The guide shoe facilitates insertion of the magnetic assembly into the mouth of the well casing, and centres the assembly once inside. The thread adaptor is used to attach the magnetic assembly to the bottom end of the perforator tool. | ||||||
| 91 | Remotely operable downhole junk basket system | US191681 | 1988-05-09 | US4828026A | 1989-05-09 | S. Parr Nelson |
| A remotely operable downhole basket for use at the bottom of a fishing string in a well bore has a tubular body. Inside the tubular body is a tubular finger basket having a plurality of slots in which fingers are pivotally mounted. The fingers are normally biased out of the slots into horizontal positions. At the bottom of the tubular body is a tubular opener. The outer side of the tubular opener is in a vertically sliding relationship with the inside wall of the tubular body. The opener is configured at its upper end to push the fingers into their respective slots. The tubular opener has an actuator shoe at the lower end of the tubular opener. The top end of the actuator shoe is adapted to abut against the lower end of the tubular body to stop upward travel of the opener relative to the tubular body. A circular return spring is positioned between the outer side of the tubular opener and the inside wall of the tubular body. The return spring exerts a force on the tubular opener which is downward relative to the tubular body. | ||||||
| 92 | Multipurpose fluid flow assisted downhole tool | US097496 | 1979-11-26 | US4296822A | 1981-10-27 | Ronald D. Ormsby |
| A multipurpose fluid flow assisted downhole tool that is adapted for attachment to the lower end of a pipe string to be extended into a well bore and which is capable of cutting sample cores from subsurface earth formations and removing the cores for evaluation. The tool is also capable of removing ferrous metal objects from the bottom of the well bore by both mechanical and magnetic means in conjunction with object movement assistance that is provided by flowing fluid in the vicinity of the bottom of the well bore. The well servicing tool includes an internal mechanism that has the capability of achieving reverse circulation of fluid in the vicinity of the bottom of the well bore which causes fluid flow from the annulus between the tool and the well bore, upwardly into an internal object collection chamber defined by the well tool and then outwardly of the well tool and upwardly through the annulus between the pipe string and the well bore to the surface. Ferrous objects are attracted by a magnet movably disposed within the object collection chamber and nonferrous objects are transported into the object collection chamber by flowing fluid and are retained therein by a plurality of object retainer fingers defining the bottom portion of the object collection chamber. | ||||||
| 93 | Big hole bit | US803700 | 1977-06-06 | US4125167A | 1978-11-14 | Robert F. Evans; James H. Allen |
| A large diameter drill bit having a plurality of rolling cutters is provided with permanent magnets mounted on flexible flaps to collect magnetic debris on the bottom of a drill hole. A flap carrying a permanent magnet is mounted adjacent each cutter, or flaps carrying magnets are formed in a radially extending row to sweep the bottom of the hole as the bit rotates. In another form, magnets are included in wheels which roll on the bottom of the hole to collect the magnetic debris. | ||||||
| 94 | Junk basket and method of removing foreign material from a well | US706387 | 1976-07-19 | US4059155A | 1977-11-22 | Tom R. Greer |
| An improved junk basket comprises a tool body having a longitudinally extending passageway therethrough and a magnet assembly disposed in the passageway. A retainer is cooperative between the magnet assembly and the tool body to retain the magnet assembly in a lower position in the passageway and selectively releasable to permit longitudinal movement of the magnet assembly to an upper position in the passageway whereby core cutting apparatus and/or an improved reverse circulation system, also included in the tool, may be employed. | ||||||
| 95 | Repulsing clays on drill bits | US554883 | 1975-03-27 | USRE29151E | 1977-03-15 | Stanley B. McCaleb |
| Bit balling is prevented by impressing a negative electrical charge on the drill bit by the use of bi-metallic electromotive potential differences, batteries or other electrical energy sources. | ||||||
| 96 | Rotary-air-percussion, stabilizer and reamer drill bit of its own true gauge | US51718365 | 1965-12-23 | US3346060A | 1967-10-10 | REX BEYER LEAMAN |
| 97 | Magnetic junk sub | US7381260 | 1960-12-05 | US3089724A | 1963-05-14 | CROOKS GEORGE C |
| 98 | Magnetic retrieving tool | US82025659 | 1959-06-15 | US3019845A | 1962-02-06 | WILLIAM MAYALL |
| 99 | Magnetic fishing tool | US73794458 | 1958-05-26 | US2918323A | 1959-12-22 | COFFEE CHARLES W |
| 100 | Magnetic fishing tool | US44103854 | 1954-07-02 | US2857970A | 1958-10-28 | HOPKINS ORREN B |
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