ClassID:

135452

E21B31/125 - CPC Classification

Classification description:

Fishing for or freeing objects in boreholes or wells; Grappling tools, e.g. tongs or grabs specially adapted for parted wire line or ropes

Recent Application in this class:
#1
20250314144
2025-10-09

Downhole Fish Grabbing Tool

#2
20250137339
2025-05-01

Methods and apparatus for retrieving a wireline using a release sub

#3
20240392645
2024-11-28

COMPACTION AND FISHING SPEAR FOR WIRELINE LOST DOWNHOLE AND METHOD OF USE

#4
20240368955
2024-11-07

SYSTEMS AND METHODS FOR ADVANCED FISHING OF DOWNHOLE CABLE WIRE

#5
20230243225
2023-08-03

DOWNHOLE WIRELINE RECOVERY TOOL AND METHOD OF RECOVERING DOWNHOLE WIRELINES

#6
20230212921
2023-07-06

Time-Controlled-PRV Cable-Head Cutter For Line Conveyed Tools

#7
20220205332
2022-06-30

Universal grapple overshot for fishing irregular shaped objects

#8
20190309592
2019-10-10

Fishing tool receiver with locking collar

#9
20180283118
2018-10-04

Coiled tubing venturi junk basket tool and method of use

#10
20170350207
2017-12-07

Slickline shredder

#11
20170114604
2017-04-27

Downhole cable grab assembly and method of use

#12
20160115758
2016-04-28

Petroleum instrument salvaging connector and petroleum instrument

#13
20160115757
2016-04-28

PETROLEUM INSTRUMENT SALVAGING SYSTEM AND SALVAGING HEAD

#14
20160115756
2016-04-28

Petroleum instrument hoisting system and hoisting head

#15
20160010416
2016-01-14

Fibre composite rod fishing tool

#16
20120298366
2012-11-29

Well fishing method and system

#17
20120048552
2012-03-01

Method of using wired drillpipe for oilfield fishing operations

#18
20110024118
2011-02-03

Well fishing method and system

#19
20070044970
2007-03-01

Cable hanger for use in a cable guided fishing assembly

#20
18776345
2025-07-15

Active grasping wireline fishing tool

#21
18156495
2024-04-09

Compacting wireline fishing tool and methods of use