Patents-Review.com
ClassID:

135496 ⎘

E21B33/1265 - CPC Classification

Classification description:

Sealing or packing boreholes or wells in the borehole; Packers; Plugs with fluid-pressure-operated elastic cup or skirt with mechanical slips

Recent Application in this class:
#1
20260036003
2026-02-05

GEOTHERMAL SYSTEM MATERIALS

 #2
20250012166
2025-01-09

PACKER SYSTEM, AND PROCESS TO SETTLE AND RETRIEVE

 #3
20240175332
2024-05-30

GEOTHERMAL SYSTEM MATERIALS

 #4
20240060387
2024-02-22

Packer system, and process to settle and retrieve

 #5
20240052720
2024-02-15

Downhole tool securing device and frac plug

 #6
20230374883
2023-11-23

Well tool device for transporting a heat generating mixture into a well pipe

 #7
20230313634
2023-10-05

Metal to metal tubular connection with controlled support structure

 #8
20190145219
2019-05-16

Methods and systems for a bridge plug

 #9
20190078415
2019-03-14

SINGLE-CONE BIDIRECTIONAL SLIP SYSTEM

 #10
20180266200
2018-09-20

Gripping apparatus and associated methods of manufacturing

 #11
20180258734
2018-09-13

Downhole casing pulling tool

 #12
20180087345
2018-03-29

Dissolvable composite slips and methods of manufacturing same

 #13
20170044860
2017-02-16

Downhole fishing tool and method of use

 #14
20170002618
2017-01-05

Downhole fishing tool and method of use

 #15
20150159453
2015-06-11

Downhole fishing tool and method of use

 #16
20130020071
2013-01-24

Frangible slip for downhole tools

 #17
20120080202
2012-04-05

Downhole apparatus with packer cup and slip

 #18
20120080182
2012-04-05

Fill up and circulating tool with well control feature

 #19
20110308820
2011-12-22

Downhole apparatus with packer cup and slip

 #20
20100200218
2010-08-12

Apparatus and method for treating zones in a wellbore

 #21
20100101807
2010-04-29

Downhole apparatus with packer cup and slip

 #22
20090159299
2009-06-25

Dual-stage valve straddle packer for selective stimulation of wells