ClassID:

135454

E21B31/16 - CPC Classification

Classification description:

Fishing for or freeing objects in boreholes or wells; Grappling tools, e.g. tongs or grabs combined with cutting or destroying means

Recent Application in this class:
#1
20250354448
2025-11-20

Apparatus To Move An Object In An Open Hole Section of A Wellbore

#2
20250290380
2025-09-18

Method for Casing Recovery

#3
20250230723
2025-07-17

Methods and Apparatus for Casing Recovery

#4
20250109648
2025-04-03

THROUGH-TUBING PLUG

#5
20250003306
2025-01-02

SPEAR AND PACKER TOOL, AN ASSEMBLY COMPRISING SAID TOOL, AND A METHOD FOR USING SAID TOOL AND SAID ASSEMBLY

#6
20240309718
2024-09-19

Improvements In Or Relating To Well Abandonment and Slot Recovery

#7
20240209707
2024-06-27

AXIAL POSITION-CONTROLLED OPERATION TOOLSTRING AND METHOD

#8
20240191586
2024-06-13

Mechanical autonomous punch and cut system

#9
20240167356
2024-05-23

RADIAL CUTTING APPARATUS FOR CUTTING A DOWNHOLE CONDUIT

#10
20240060379
2024-02-22

DOWNHOLE CASING REMOVAL TOOL AND METHOD

#11
20240044220
2024-02-08

METHOD FOR PULLING CASING

#12
20230407722
2023-12-21

Cutting a valve within a well stack

#13
20230366285
2023-11-16

CASING CUTTING APPARATUS AND METHODS OF USE

#14
20230366284
2023-11-16

STUCK PACKER MILLER AND EXTERNAL RETRIEVAL TOOL

#15
20230243215
2023-08-03

SYSTEMS AND METHODS FOR SIDETRACKING OPERATIONS

#16
20230068934
2023-03-02

Flow diversion valve for downtool tool assembly

#17
20230064823
2023-03-02

Downhole tool

#18
20230061851
2023-03-02

Improvements In Or Relating To Wellbore Operations

#19
20220397011
2022-12-15

Radial cutting apparatus for cutting a downhole conduit

#20
20220341273
2022-10-27

Removing a tubular from a wellbore

#21
20220333454
2022-10-20

Well abandonment

#22
20220298880
2022-09-22

Freeing a stuck pipe from a wellbore

#23
20220268121
2022-08-25

Downhole laser tool and methods

#24
20220220820
2022-07-14

Or relating to well abandonment and slot recovery

#25
20220170337
2022-06-02

Method for pulling tubulars using a pressure wave

#26
20220074300
2022-03-10

System and method for retrieving a source element from a logging tool located in a well

#27
20220042389
2022-02-10

Milling packers below restrictions in a wellbore casing

#28
20220034182
2022-02-03

Downhole pulling tool with selective anchor actuation

#29
20210381330
2021-12-09

Freeing a stuck pipe from a wellbore

#30
20210301616
2021-09-30

Downhole tool

#31
20210198967
2021-07-01

Well abandonment and slot recovery

#32
20210115747
2021-04-22

Flow Diversion Valve for Downhole Tool Assembly

#33
20210054706
2021-02-25

Vertically cutting downhole tubulars

#34
20200347687
2020-11-05

Method of removing a downhole casing

#35
20200224509
2020-07-16

Downhole cut and pull tool and method of use

#36
20200190930
2020-06-18

Well abandonment and slot recovery

#37
20200072009
2020-03-05

Well abandonment and slot recovery

#38
20200040685
2020-02-06

Method and apparatus for clearing a well bore

#39
20200032604
2020-01-30

Milling downhole tubulars

#40
20190257168
2019-08-22

Method of removing a downhole casing

#41
20190226327
2019-07-25

Downhole test tool and method of use

#42
20190078409
2019-03-14

Installing a tubular string through a blowout preventer

#43
20180258734
2018-09-13

Downhole casing pulling tool

#44
20180202250
2018-07-19

Gripping tool for removing a section of casing from a well

#45
20180195359
2018-07-12

Tension cutting casing and wellhead retrieval system

#46
20170350207
2017-12-07

Slickline shredder

#47
20170328160
2017-11-16

Method for recovering tubular structures from a well and a downhole tool string

#48
20170159388
2017-06-08

Method and apparatus for retrieving a tubing from a well

#49
20160281458
2016-09-29

Retrievable downhole tool

#50
20160265295
2016-09-15

One-trip cut and pull system and apparatus

#51
20160245033
2016-08-25

TOOL AND METHOD OF OPERATION FOR REMOVING DEBRIS AND/OR A LODGED TOOL FROM A WELLBORE

#52
20160130903
2016-05-12

Casing removal tool and methods of use for well abandonment

#53
20150129195
2015-05-14

Retractable cutting and pulling tool with uphole milling capability

#54
20150047845
2015-02-19

Method for removal of casings in an underground well

#55
20140262273
2014-09-18

Break-away support ring for wellbore apparatus

#56
20140251617
2014-09-11

Method and apparatus for removing unexpanded shoe

#57
20140231087
2014-08-21

Apparatus and method for cutting and pulling of a casing

#58
20140116705
2014-05-01

One trip packer plug debris milling and removal method

#59
20140096947
2014-04-10

Cutting and pulling tool with double acting hydraulic piston

#60
20130092378
2013-04-18

Selectively fired high pressure high temperature back-off tool

#61
20130048268
2013-02-28

Multi-position mechanical spear for multiple tension cuts with releasable locking feature

#62
20100288485
2010-11-18

Packer retrieving mill with debris removal

#63
20100181789
2010-07-22

Milled packer retaining tool with reverse circulation

#64
20100006290
2010-01-14

Methods of making multiple casing cuts

#65
20090183878
2009-07-23

Downhole tool

#66
20090050310
2009-02-26

Combination motor casing and spear

#67
20080236829
2008-10-02

Casing profiling and recovery system

#68
20060196679
2006-09-07

Apparatus for radially expanding and plastically deforming a tubular member

#69
20050133227
2005-06-23

Side entry sub hydraulic wireline cutter and method

#70
13815248
2016-03-15

Retrieval tool