E21B31/14 - CPC Classification Index

ClassID:

135453 ⎘

E21B31/14 - CPC Classification

Classification description:

Fishing for or freeing objects in boreholes or wells; Grappling tools, e.g. tongs or grabs with means deflecting the direction of the tool, e.g. by use of knuckle joints

Recent Application in this class:

20250109676

2025-04-03

REMOVABLE CARTRIDGE FOR A DOWNHOLE FLUID AND SOLID SEPARATION SYSTEM IN A WELL

20220268120

2022-08-25

Fishing scanning tool

20220259949

2022-08-18

Lateral locating assembly for lateral intervention

20210396087

2021-12-23

Powered articulated magnetic fishing tool

20210340820

2021-11-04

Steering pad apparatus and related methods

20200256128

2020-08-13

Deflector assembly and efficient method for multi-stage fracturing a multilateral well using the same

20190301258

2019-10-03

Downhole Fishing

20180363830

2018-12-20

Method of providing a latch for pipeline remediation

20140138969

2014-05-22

Fishing guide for directing a skewed fish in a wellbore

#10

20130014957

2013-01-17

Downhole guiding tool

#11

20070044448

2007-03-01

Bearing assembly for swivel joint