Patents-Review.com
ClassID:

135446 ⎘

E21B31/06 - CPC Classification

Classification description:

Fishing for or freeing objects in boreholes or wells using magnetic means

Recent Application in this class:
#1
20250376905
2025-12-11

BACK PRESSURE VALVE RECOVERY TOOL AND METHODS OF USE

 #2
20250314144
2025-10-09

Downhole Fish Grabbing Tool

 #3
20250137355
2025-05-01

WELLBORE CLEANING TOOLS

 #4
20240401427
2024-12-05

DEBRIS CAPTURING MAGNET WITH REAL TIME DEBRIS CAPACITY MONITORING

 #5
20240159119
2024-05-16

Diffuser and Filter Assemblies With Magnetic Features

 #6
20240076957
2024-03-07

DOWNHOLE MAGNET, DOWNHOLE MAGNETIC JETTING TOOL AND METHOD OF ATTACHMENT OF MAGNET PIECES TO THE TOOL BODY

 #7
20230332486
2023-10-19

Wellbore cleanout magnet tool

 #8
20230175335
2023-06-08

Gauge cutter and sampler apparatus

 #9
20230144265
2023-05-11

MAGNETIC TOOL AND CLEANING METHOD

 #10
20230091920
2023-03-23

Adjustable mill

 #11
20220372827
2022-11-24

WELL TOOL

 #12
20220325611
2022-10-13

Tool deployment and cleanout system

 #13
20220268120
2022-08-25

Fishing scanning tool

 #14
20220213744
2022-07-07

Removal of downhole ferromagnetic disk

 #15
20220136354
2022-05-05

Debris collection tool

 #16
20220025728
2022-01-27

Magnetic fishing tool and use thereof in fishing operations

 #17
20220025726
2022-01-27

Well tool

 #18
20210396087
2021-12-23

Powered articulated magnetic fishing tool

 #19
20210372220
2021-12-02

Debris collection tool

 #20
20210332672
2021-10-28

Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body

 #21
20210285301
2021-09-16

Use of halbach array in downhole debris retrieval magnets

 #22
20210246762
2021-08-12

Magnetic cleaning apparatus and method of use thereof

 #23
20210237099
2021-08-05

Cleaning assembly for magnet assemblies

 #24
20210115746
2021-04-22

Systems and methods for removing and collecting magnetic debris from drilling fluid

 #25
20200165903
2020-05-28

Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body

 #26
20200056438
2020-02-20

Repulsion force systems and methods for metal fish retrieval

 #27
20190376357
2019-12-12

Repulsion force systems and methods for metal fish retrieval

 #28
20190249522
2019-08-15

Magnetic pulse actuation arrangement having layer and method

 #29
20190242208
2019-08-08

MAGNETORHEOLOGICAL DOWN-HOLE PACKING ELEMENTS

 #30
20190162048
2019-05-30

Magnetic Fishing Tool with Alternative Flow Capability and Method

 #31
20190136668
2019-05-09

Magnetic Downhole Tool And Related Subassemblies Having Mu-Metallic Shielding

 #32
20180355675
2018-12-13

Rheological fluid lock of shaft to housing

 #33
20180238144
2018-08-23

Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body

 #34
20180045006
2018-02-15

Magnetic pulse actuation arrangement for downhole tools and method

 #35
20180003006
2018-01-04

Conforming magnet tool for recovery of downhole debris

 #36
20170167216
2017-06-15

Apparatus and methods for overcoming an obstruction in a wellbore

 #37
20170051576
2017-02-23

Magnetic deposition prevention subassembly and method of use

 #38
20160369596
2016-12-22

MAGNETIC DOWNHOLE TOOL AND RELATED SUBASSEMBLIES HAVING MU-METALLIC SHIELDING

 #39
20160319638
2016-11-03

Method and apparatus for catching and retrieving objects in a well

 #40
20160097261
2016-04-07

Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body

 #41
20150211316
2015-07-30

Petroleum well drill—or coiled tubing string mounted fishing tool

 #42
20150192000
2015-07-09

Magnetic cleaning tool

 #43
20150122480
2015-05-07

Magnetic retrieval apparatus

 #44
20140096972
2014-04-10

Downhole magnet, downhole magnetic jetting tool and method of attachment of magnet pieces to the tool body

 #45
20130020096
2013-01-24

Method and Apparatus for Catching and Retrieving Objects in a Well

 #46
20130000884
2013-01-03

Downhole tool and method

 #47
20120261114
2012-10-18

Downhole magnet tool and method of assembly

 #48
20110285155
2011-11-24

Magnetic retrieval apparatus and method for retaining magnets on a downhole magnetic retrieval apparatus

 #49
20110284211
2011-11-24

Retaining and isolating mechanisms for magnets in a magnetic cleaning tool

 #50
20110284210
2011-11-24

Dual-Pole Magnetic Attraction Downhole Magnetic Retrieval Apparatus

 #51
20110168404
2011-07-14

Downhole tool

 #52
20100270018
2010-10-28

FISHING TOOL

 #53
20100243258
2010-09-30

Debris catcher for collecting well debris

 #54
20100186945
2010-07-29

Magnet fixing device in a cleaning tool

 #55
20100181064
2010-07-22

Multi-Purpose Well Servicing Apparatus

 #56
20080236829
2008-10-02

Casing profiling and recovery system

 #57
20080202756
2008-08-28

Magnetic Assemblies for Deposit Prevention

 #58
20080128347
2008-06-05

Metal debris cleanout system and method

 #59
20070267196
2007-11-22

Downhole activated packer plug magnetic debris tool

 #60
20070107894
2007-05-17

Magnetic tool for retrieving metal objects from a well bore when using coil tubing

 #61
20070102161
2007-05-10

Magnetic fishing tool and method

 #62
20070085645
2007-04-19

Magnetic tool for retrieving metal objects from a well bore

 #63
20060164917
2006-07-27

Electromagnetic anti-jam telemetry tool

 #64
20060049111
2006-03-09

Metal debris cleanout system and method

 #65
20060042790
2006-03-02

Magnetic tool for retrieving metal objects from a well bore when using coil tubing

 #66
20050274524
2005-12-15

Magnet arrangement and method for use on a downhole tool

 #67
19041279
2026-02-24

Magnetized wireline pulling tool

 #68
18738494
2025-12-09

Back pressure valve recovery tool and methods of use

 #69
14921201
2016-08-23

Magnetic tool and method

 #70
13873718
2016-07-19

Method and apparatus for catching and retrieving objects in a well