Patents-Review.com
ClassID:

135491 ⎘

E21B33/122 - CPC Classification

Classification description:

Sealing or packing boreholes or wells in the borehole; Packers; Plugs Multiple string packers

Recent Application in this class:
#1
20250270898
2025-08-28

GAS-ACTIVATED VENT VALVE BELOW PACKER FOR STABLE ELECTRICAL SUBMERSIBLE PUMP (ESP) OPERATION IN GASSY WELLS

 #2
20250075588
2025-03-06

MULTIPLE EXPANDABLE METAL PACKERS WITH HYDROLOCK PREVENTION

 #3
20250067150
2025-02-27

DOWNHOLE FLUID SEPARATOR DESIGN IN MULTILATERAL WELL

 #4
20250059847
2025-02-20

PROCESSES FOR INJECTION OF FLUIDS INTO A WELLBORE VIA DRILL PIPE

 #5
20240418084
2024-12-19

METHOD AND SYSTEM FOR AUTOMATED MULTI-ZONE DOWNHOLE CLOSED LOOP RESERVOIR TESTING

 #6
20240018868
2024-01-18

Method and system for automated multi-zone downhole closed loop reservoir testing

 #7
20240011365
2024-01-11

Self-assembling porous gravel pack in a wellbore

 #8
20230057873
2023-02-23

Maintaining integrity of lower completion for multi-stage fracturing

 #9
20230003098
2023-01-05

ANNULAR BARRIER

 #10
20230003097
2023-01-05

ANNULAR BARRIER

 #11
20220025730
2022-01-27

Downhole well tools and methods of using such

 #12
20210404283
2021-12-30

Downhole fishing tool

 #13
20210310335
2021-10-07

Method of attenuating annular pressure buildup using compressible particles

 #14
20210277735
2021-09-09

Tandem releasable bridge plug system and method for setting such tandem releasable bridge plugs

 #15
20210189868
2021-06-24

Systems and methods for actuating downhole devices and enabling drilling workflows from the surface

 #16
20210189831
2021-06-24

Modular pressure cylinder for a downhole tool

 #17
20200378210
2020-12-03

High pressure sealing tool for use in downhole environment

 #18
20200256151
2020-08-13

Annular bypass packer

 #19
20200182008
2020-06-11

Methods and apparatus for use in oil and gas well completion

 #20
20200056443
2020-02-20

Downhole fishing tool

 #21
20200048989
2020-02-13

Method and Apparatus for Wellbore Fluid Treatment

 #22
20200040693
2020-02-06

Annular barrier system

 #23
20200040691
2020-02-06

Packer and system

 #24
20190234176
2019-08-01

Pressure Control Devices for Sealing Around Tubular Members

 #25
20190195040
2019-06-27

Modular pressure cylinder for a downhole tool

 #26
20190195039
2019-06-27

Straddle packer with fluid pressure packer set and velocity bypass

 #27
20190093454
2019-03-28

Actuable downhole tools for attachment to tubular strings

 #28
20190048681
2019-02-14

Safety plug

 #29
20190040715
2019-02-07

Multi-stage Treatment System with Work String Mounted Operated Valves Electrically Supplied from a Wellhead

 #30
20190017347
2019-01-17

Packer assembly including a support ring

 #31
20190010805
2019-01-10

Pressure testing for downhole fluid injection systems

 #32
20190010785
2019-01-10

Method and apparatus for wellbore fluid treatment

 #33
20190003278
2019-01-03

Packoff seals and processes for using same

 #34
20180363439
2018-12-20

Method and apparatus for wellbore fluid treatment

 #35
20180328135
2018-11-15

Dual Bore Packer with Axially Offset Mandrel Threads

 #36
20180320478
2018-11-08

METHOD AND APPARATUS FOR WELLBORE FLUID TREATMENT

 #37
20180306013
2018-10-25

Scheduling treatment fluid placement and fluid diversion in a subterranean formation

 #38
20180171740
2018-06-21

Dual Bore Swell Packer

 #39
20180119528
2018-05-03

Downhole perforating tools and methods

 #40
20180073339
2018-03-15

Methods and systems for maintaining a pressure differential between pairs of packers

 #41
20170350221
2017-12-07

METHOD OF SIMULTANEOUS INTRODUCING OF TWO OR MORE THAN TWO CHEMICAL SUBSTANCES AND/OR WATER INTO A SUBTERRANEOUS HYDROCARBON FORMATION AND/OR CONTROL OF THE RATE OF CHEMICAL REACTIONS OF THESE SUBSTANCES, AND A DEVICE FOR IMPLEMENTATION OF THIS METHOD

 #42
20170342797
2017-11-30

Lattice seal packer assembly and other downhole tools

 #43
20170247973
2017-08-31

Systems and methods for an expandable packer

 #44
20170234100
2017-08-17

Methods and apparatus for use in oil and gas well completion

 #45
20170234093
2017-08-17

Downhole fishing tool

 #46
20170226820
2017-08-10

System and method for isolating a section of a well

 #47
20170226819
2017-08-10

Downhole well tools and methods of using such

 #48
20170138161
2017-05-18

Method for the stimulation of the near-wellbore reservoir of a horizontal wellbore

 #49
20170138158
2017-05-18

Completion system for gravel packing with zonal isolation

 #50
20170051574
2017-02-23

MULTI-STAGE WELL ISOLATION AND FRACTURING

 #51
20170037698
2017-02-09

Packer apparatus and method of sealing well casing

 #52
20170030157
2017-02-02

Multifunction wellbore tubular penetration tool

 #53
20160376868
2016-12-29

Downhole packer tool

 #54
20160362962
2016-12-15

Sliding sleeve having indexing mechanism and expandable sleeve

 #55
20160356115
2016-12-08

Variable height backup assembly for articulating boots

 #56
20160251949
2016-09-01

Method and apparatus for wellbore fluid treatment

 #57
20160251932
2016-09-01

Method and apparatus for wellbore fluid treatment

 #58
20160245038
2016-08-25

Swellable Seal with Backup

 #59
20160237777
2016-08-18

Metal Chevron Seal

 #60
20160186525
2016-06-30

Continuously sealing telescoping joint having multiple control lines

 #61
20160069157
2016-03-10

Method and apparatus for wellbore fluid treatment

 #62
20160010420
2016-01-14

Wellbore isolation system with communication lines

 #63
20150376976
2015-12-31

Pressure relief-assisted packer

 #64
20150330158
2015-11-19

APPARATUSES, SYSTEMS, AND METHODS FOR INJECTING FLUIDS INTO A SUBTERRANEAN FORMATION

 #65
20150308225
2015-10-29

Selectively operated two way check valve for subterranean use

 #66
20140352942
2014-12-04

Annular barrier with a self-actuated device

 #67
20140116731
2014-05-01

Method and apparatus for wellbore fluid treatment

 #68
20140116699
2014-05-01

Pressure relief-assisted packer

 #69
20130341016
2013-12-26

System and method for sampling assembly with outer layer of rings

 #70
20130320626
2013-12-05

Pack off device with cable feedthrough

 #71
20130146311
2013-06-13

Selective set module for multi string packers

 #72
20130068484
2013-03-21

Method and apparatus for wellbore fluid treatment

 #73
20120125641
2012-05-24

Modular hydraulic packer-and-port system

 #74
20120043095
2012-02-23

Dual packer for a horizontal well

 #75
20110278010
2011-11-17

Method and apparatus for wellbore fluid treatment

 #76
20110259611
2011-10-27

Mechanically deployable well isolation mechanism

 #77
20110259587
2011-10-27

Apparatus and method for sealing portions of a wellbore

 #78
20110127047
2011-06-02

Method and apparatus for wellbore fluid treatment

 #79
20100276161
2010-11-04

Dual packer for a horizontal well

 #80
20100065276
2010-03-18

Method and apparatus for wellbore fluid treatment

 #81
20090283280
2009-11-19

Hydraulic open hole packer

 #82
20090277623
2009-11-12

Dual packer for a horizontal well

 #83
20090218101
2009-09-03

Apparatus and method for inflow control

 #84
20080277110
2008-11-13

Hydraulic open hole packer

 #85
20070151734
2007-07-05

Method and apparatus for wellbore fluid treatment

 #86
20070114037
2007-05-24

Wellbore system for simultaneous drilling and production

 #87
20060076140
2006-04-13

Gas lift apparatus and method for producing a well

 #88
20060048950
2006-03-09

Well packer for a pipe string and a method of leading a line past the well packer

 #89
20060027378
2006-02-09

Multi-string production packer and method of using the same

 #90
20050178552
2005-08-18

Method and apparatus for wellbore fluid treatment

 #91
20050087347
2005-04-28

Two slip retrievable packer for extreme duty

 #92
18589161
2025-08-26

Gas-activated vent valve below packer for stable electrical submersible pump (ESP) operation in gassy wells

 #93
18158584
2024-04-30

Bottomhole sweetening of sour gas wells

 #94
13302718
2015-06-02

Methods, device and components for securing or coupling geophysical sensors to a borehole