| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Magnetic tool and method | US14921201 | 2015-10-23 | US09422781B1 | 2016-08-23 | Robert W. Bennett |
| A magnetic tool for use in removing metal debris from a well is disclosed, the tool having inserts that may be safely installed and removed by a method using a placement screw to prevent pinching. The inserts comprised of a sleeve with a lead end and a follow end. The inserts also containing a plurality of magnets. | ||||||
| 122 | MAGNETIC RETRIEVAL APPARATUS | US14532594 | 2014-11-04 | US20150122480A1 | 2015-05-07 | Michael K. SULLIVAN; Arthur Warren MEEKS |
| A downhole retrieval tool includes a mandrel; an inner sleeve disposed around the mandrel; a plurality of magnets coupled to the inner sleeve; and an outer sleeve disposed around the plurality of magnets, wherein the inner sleeve and the plurality of magnets are rotatable relative to the mandrel. In another aspect, an assembly tool for handling a magnet includes an anchor; a conveyance movable relative to the anchor; and a magnet holder coupled to the conveyance, wherein the magnet holder includes an arm for retaining the magnet. | ||||||
| 123 | Multi-purpose well servicing apparatus | US13525686 | 2012-06-18 | US08714260B2 | 2014-05-06 | Benton Knobloch; Todd Roy; Stephen R. Callegari, Sr. |
| An apparatus for cleaning the inner wall of wellbores and for capturing downhole wellbore debris. An elongated, tubular central mandrel is provided with recesses on its outer surface. Various service elements are interchangeably mounted over the split rings. The various service elements include stabilizers, brush assemblies, junk baskets and magnets. | ||||||
| 124 | Downhole tool | US13002160 | 2009-07-16 | US08689877B2 | 2014-04-08 | George Telfer; James Linklater; James Atkins |
| A cleaning tool (1) for use in cleaning ferrous material from a wellbore has a magnetic cleaning element (14) mounted to a tool body (2) within a slot (5) using a releasable concealed interference fit fastener assembly (15) comprising a fastener member having a head (16), and a shank (17) with a configured end (18) and a deformable fastener ring (20) adapted to fit closely over the shank, and a press-fit collar (21) adapted to deform the deformable fastener ring upon the configured end of the shank when assembled, and wherein the respective head and collar are each flanged to permit an interference fit with a corresponding contact surface of the tool body around said slot. | ||||||
| 125 | Retaining and isolating mechanisms for magnets in a magnetic cleaning tool | US12782249 | 2010-05-18 | US08353349B2 | 2013-01-15 | Gregory L. Hern; Larry T. Palmer; Jonathan F. Nelson |
| 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. A removable insert resides upon the tool mandrel. The insert retains a plurality of individual magnets in a fixed array or matrix surrounding the mandrel. | ||||||
| 126 | DOWNHOLE TOOL AND METHOD | US13575895 | 2011-02-04 | US20130000884A1 | 2013-01-03 | James Linklater |
| A cleaning tool (1) for use in cleaning ferrous material from a wellbore has a magnetic cleaning functionality by provision of magnets (5) in an Halbach array on a downhole tool component of a workstring. The Halbach array may be an Halbach cylinder positioned on a mandrel wherein the magnetic field is external to the cylinder with substantially zero magnetic field within the tool. | ||||||
| 127 | DOWNHOLE MAGNET TOOL AND METHOD OF ASSEMBLY | US13087166 | 2011-04-14 | US20120261114A1 | 2012-10-18 | Michael Shoyhetman; David Budney; Craig Budney; Glenn Budney |
| A downhole magnet tool is disclosed comprising a top sub having an inner bore terminating in a downhole facing open end, the inner bore defining a centralizer receptacle of smaller width than a width of the downhole facing open end, a mandrel terminating upwardly in a centralizer stem, the centralizer stem being fitted in the centralizer receptacle of the top sub, and a magnet mounted on a downhole facing surface of the mandrel. A method of assembly of a downhole magnet tool is also disclosed. | ||||||
| 128 | Magnet fixing device in a cleaning tool | US12665801 | 2008-06-25 | US08220532B2 | 2012-07-17 | Karluf Hagen |
| A magnet fixing device in a cleaning tool (1) for use in a borehole where the cleaning tool (1) is externally provided with at least one projection (8) and at least two recesses (6) and where at least one magnet (12) is disposed in the projection (8), as the magnetic field from the at least one magnet (12) is active in that it is arranged to at least attract a magnet sensitive material (20) into a recess (6) or hold the material (20) in the recess (6), and where the magnet (12) runs through the projection (8), whereby the one magnet (12) pole is active in a first recess (6) while the other magnet (12) pole is active in a second recess (6). | ||||||
| 129 | Dual-Pole Magnetic Attraction Downhole Magnetic Retrieval Apparatus | US12782207 | 2010-05-18 | US20110284210A1 | 2011-11-24 | Gregory L. Hern; Thomas M. Ashy; Jace E. Melder; Larry T. Palmer; Paul L. Connell; Jonathan F. Nelson |
| 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 insert is formed such that both the north and south magnetic poles of the one or more magnets are able to attract metallic debris. | ||||||
| 130 | DEBRIS CATCHER FOR COLLECTING WELL DEBRIS | US12412084 | 2009-03-26 | US20100243258A1 | 2010-09-30 | Craig Fishbeck; John C. Wolf |
| A downhole debris recovery tool including a ported sub coupled to a debris sub, a suction tube disposed in the debris sub, at least one magnet disposed in the debris removal tool, and an annular jet pump sub disposed in the ported sub and fluidly connected to the suction tube. A method of removing debris from a wellbore including the steps of lowering a downhole debris removal tool into the wellbore, flowing a fluid through a bore of an annular jet pump sub, jetting the fluid from the annular jet pump sub into a mixing tube, displacing an initially static fluid in the mixing tube through a diffuser, thereby creating a vacuum effect in a suction tube to draw a debris-laden fluid into the tool, flowing the debris-laden fluid past at least one magnet disposed in a debris housing, and removing the tool from the wellbore is also disclosed. | ||||||
| 131 | MAGNET FIXING DEVICE IN A CLEANING TOOL | US12665801 | 2008-06-25 | US20100186945A1 | 2010-07-29 | Karluf Hagen |
| A magnet fixing device in a cleaning tool (1) for use in a borehole where the cleaning tool (1) is externally provided with at least one projection (8) and at least two recesses (6) and where at least one magnet (12) is disposed in the projection (8), as the magnetic field from the at least one magnet (12) is active in that it is arranged to at least attract a magnet sensitive material (20) into a recess (6) or hold the material (20) in the recess (6), and where the magnet (12) runs through the projection (8), whereby the one magnet (12) pole is active in a first recess (6) while the other magnet (12) pole is active in a second recess (6). | ||||||
| 132 | Metal debris cleanout system and method | US12008637 | 2008-01-14 | US07665546B2 | 2010-02-23 | 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. | ||||||
| 133 | Casing profiling and recovery system | US11728401 | 2007-03-26 | US20080236829A1 | 2008-10-02 | Gerald D. Lynde |
| A casing cutting and recovery tool having a cutting assembly, an expansion assembly having one or more deforming members, and a recovery assembly is used to cut a window in wellbore casing, secure a removable segment of wellbore casing that was previously disposed within the window, and recover the removable segment of wellbore casing with the tool. One or more cutting assemblies provides one or more cuts in the wellbore casing. The deforming members of the expansion assembly then expand outwardly at least two portions of the wellbore casing shaped by the cut or cuts. The recovery assembly secures the removable segment of the wellbore casing to the tool so that the tool and the removable segment of wellbore casing can be recovered together from the wellbore. | ||||||
| 134 | Magnetic Assemblies for Deposit Prevention | US12099766 | 2008-04-08 | US20080202756A1 | 2008-08-28 | Terence Borst; Dudley J. Perio; Daniel Scott Alms |
| An apparatus and method for controlling and/or minimizing the formation or accumulation of unwanted deposits on the inside of fluid flow paths by employing at various locations along the path an assembly of permanent magnets oriented such that the fluid flow is preferably from the North magnetic pole to the South magnetic pole. | ||||||
| 135 | Metal debris cleanout system and method | US11166312 | 2005-06-24 | US07410014B2 | 2008-08-12 | 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. | ||||||
| 136 | Magnetic fishing tool and method | US11222647 | 2005-09-09 | US20070102161A1 | 2007-05-10 | Michael Gazewood |
| An apparatus 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 within the housing, with the sleeve being constructed of a non-magnetic conduction material. A magnet is disposed within the sleeve, with the magnet having a north pole and a south pole. The apparatus further includes a container disposed within the sleeve, the container having a second wall. In the most preferred embodiment, the first wall defines a first pathway for magnetic lines of flux for the north pole of the magnet and wherein the second wall defines a second pathway for magnetic lines of flux for the south pole of the magnet so that a toroidal magnetic field is formed about the distal end of the sleeve. A method of retrieving a metal object within a well bore is also disclosed. | ||||||
| 137 | Magnetic tool for retrieving metal objects from a well bore | US10935367 | 2004-09-07 | US20070085645A1 | 2007-04-19 | David Ruttley |
| A magnetic 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 covering a majority surface area of the tool body. Each magnet member has a magnet body and a shield encasing the magnet body and protecting the individual magnet body from striking force created by the attracted metal particles. The shield is preferably made from a non-ferrous material and allows concentration of the magnetic force away from the tool body and into the casing annulus. | ||||||
| 138 | Magnet arrangement for use on a downhole tool | US10865486 | 2004-06-10 | US20050274524A1 | 2005-12-15 | Benny Silguero |
| The present invention relates to a downhole tool for removing metallic debris from a well bore. The downhole tool includes a plurality of magnets disposed on the tool body. The plurality of magnets are arranged in a bucking arrangement such that repulsing forces are generated between neighboring pairs of the plurality of magnets. The bucking arrangement results in an expanded reach of the magnetic fields of the magnets to enhance the removal of metallic debris. | ||||||
| 139 | Magnetic well cleaning apparatus | US09579453 | 2000-05-26 | US06655462B1 | 2003-12-02 | Mark Carmichael; Paul Howlett |
| Apparatus which can collect loose debris, particularly ferrous debris, has a body 2 with upper 3 and lower 4 stabiliser sleeve. The body 2 has a one or more integral magnets or magnetic areas 5. In one embodiment the magnets are located in a first and second row on a split sleeve 6 and are covered by a protective stainless steel sleeve7. The apparatus may alternatively comprise magnetic scraper blades or a magnetic sub. The magnets are selectively activated. There is also described a method of trapping or retaining debris in a well bore. | ||||||
| 140 | DOWNHOLE FISHING TOOL FOR RETRIEVING METALLIC DEBRIS FROM A BOREHOLE | US10096268 | 2002-03-12 | US20030173084A1 | 2003-09-18 | Mehmet Fidan |
| A system for retrieving stray radioactive marker bullets from a borehole in a subterranean formation during placement of the radioactive marker bullets in the formation. | ||||||
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