Patents-Review.com
ClassID:

135444 ⎘

E21B31/007 - CPC Classification

Classification description:

Fishing for or freeing objects in boreholes or wells fishing tools with means for attaching comprising fusing or sticking

Recent Application in this class:
#1
20260063011
2026-03-05

EXPANDABLE POLYMER GROUT FOR WELLBORE APPLICATIONS

 #2
20250334014
2025-10-30

UNIVERSAL FISHING TOOL AND METHOD OF REMOVING A FISH FROM A WELLBORE

 #3
20250198248
2025-06-19

METHODS AND APPARATUSES FOR REMOVING METAL OBJECTS FROM WELLS

 #4
20250092751
2025-03-20

POWDER WELD FISHING TOOL

 #5
20250092750
2025-03-20

Laser cladding fishing tool

 #6
20240352828
2024-10-24

DOWNHOLE DEBRIS REMOVAL APPARATUS

 #7
20230417117
2023-12-28

Fishing welding tool

 #8
20230265728
2023-08-24

Fishing welding tool

 #9
20220025730
2022-01-27

Downhole well tools and methods of using such

 #10
20210404283
2021-12-30

Downhole fishing tool

 #11
20210270103
2021-09-02

EXPANDABLE METAL FISHING TOOL

 #12
20210246751
2021-08-12

Patch for joining downhole ends of pipes

 #13
20200240225
2020-07-30

Retrieval of bottom hole assembly components from a subterranean well

 #14
20200182008
2020-06-11

Methods and apparatus for use in oil and gas well completion

 #15
20200056443
2020-02-20

Downhole fishing tool

 #16
20190309592
2019-10-10

Fishing tool receiver with locking collar

 #17
20170234100
2017-08-17

Methods and apparatus for use in oil and gas well completion

 #18
20170234093
2017-08-17

Downhole fishing tool

 #19
20170226819
2017-08-10

Downhole well tools and methods of using such

 #20
20130168078
2013-07-04

Release assembly for a downhole tool string

 #21
20110308817
2011-12-22

Multi-zone fracturing completion

 #22
20110163560
2011-07-07

Downhole tool releasing mechanism

 #23
15834955
2020-09-08

Drill alignment device