ClassID:

135489

E21B33/1212 - CPC Classification

Classification description:

Sealing or packing boreholes or wells in the borehole; Packers; Plugs characterised by the construction of the sealing or packing means including a metal-to-metal seal element

Recent Application in this class:
#1
20260071512
2026-03-12

DOWNHOLE PACKER ASSEMBLY

#2
20260063015
2026-03-05

SEAL-BORE ARRANGEMENT FOR A WELLBORE TUBING DISCONNECTION TOOL

#3
20250334021
2025-10-30

RADIAL SEALING SURFACE SYSTEM AND METHOD

#4
20250277424
2025-09-04

METHOD FOR PLACING NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS

#5
20250146379
2025-05-08

BI-DIRECTIONAL METAL TO METAL SEALING SYSTEMS AND METHODS

#6
20250137360
2025-05-01

SYSTEM FOR EXPANDING A TUBULAR DOWNHOLE

#7
20250109666
2025-04-03

Two-Stage Expandable Liner Hanger

#8
20250101824
2025-03-27

MECHANICAL STOP ARRANGEMENT FOR A BOREHOLE TUBULAR TO LOCATE AND RESTRAIN A BOREHOLE TOOL TO AN OUTSIDE DIAMETER OF THE TUBULAR, METHOD, AND SYSTEM

#9
20250084719
2025-03-13

METHOD FOR PLACING NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS

#10
20250059852
2025-02-20

DOWNHOLE VALVE ASSEMBLY

#11
20250043650
2025-02-06

Bulk metallic glass (BMG) seals for downhole applications

#12
20240271503
2024-08-15

SEAL, METHOD, AND SYSTEM

#13
20240218757
2024-07-04

Combined actuation of slips and packer sealing element

#14
20240151123
2024-05-09

Two-stage expandable liner hanger

#15
20240102353
2024-03-28

Multi-interface mechanical sealing system and method

#16
20240060385
2024-02-22

AN EXPANDABLE EUTECTIC ALLOY BASED DOWNHOLE TOOL AND METHODS OF DEPLOYING SUCH

#17
20240011562
2024-01-11

SEAL SYSTEM FOR ANNULAR COMPONENTS

#18
20240003217
2024-01-04

PRINTED ANNULAR METAL-TO-METAL SEAL

#19
20240003216
2024-01-04

Expandable annular seal tool and system

#20
20230313634
2023-10-05

Metal to metal tubular connection with controlled support structure

#21
20230304382
2023-09-28

MULTILATERAL JUNCTION HAVING EXPANDING METAL SEALED AND ANCHORED JOINTS

#22
20230287756
2023-09-14

Plug with composite ends and method of forming and using

#23
20230258050
2023-08-17

High pressure swellable packer

#24
20230243234
2023-08-03

BISMUTH METHOD OF ABANDONING A WELL

#25
20230243232
2023-08-03

PRINTED ANNULAR METAL-TO-METAL SEAL

#26
20230220741
2023-07-13

METHOD FOR PREPARING A WELLBORE

#27
20230194025
2023-06-22

Undersea hydraulic coupling with multiple pressure-energized metal seals

#28
20230167713
2023-06-01

Isolation sleeve with I-shaped seal

#29
20230147260
2023-05-11

Downhole expandable tubular

#30
20230035567
2023-02-02

Methods to monitor a metallic sealant deployed in a wellbore, methods to monitor fluid displacement, and downhole metallic sealant measurement systems

#31
20220403711
2022-12-22

Bore sealing method and apparatus

#32
20220397014
2022-12-15

Combined actuation of slips and packer sealing element

#33
20220389787
2022-12-08

COLLAPSIBLE SHELL PACKER FOR METAL-TO-METAL SEALING

#34
20220381108
2022-12-01

USING EXPANDABLE METAL AS AN ALTERNATE TO EXISTING METAL TO METAL SEALS

#35
20220381107
2022-12-01

RAPID SETTING EXPANDABLE METAL

#36
20220213744
2022-07-07

Removal of downhole ferromagnetic disk

#37
20220205341
2022-06-30

Multilateral junction having expanding metal sealed and anchored joints

#38
20220205336
2022-06-30

Interval control valve including an expanding metal sealed and anchored joints

#39
20220145712
2022-05-12

Expandable liner hanger

#40
20220106856
2022-04-07

Method of securing a well with shallow leak in upward cross flow

#41
20220090463
2022-03-24

Downhole method and apparatus

#42
20220042390
2022-02-10

Downhole welding tools and related methods

#43
20220034189
2022-02-03

Seal for a well

#44
20220010649
2022-01-13

Removable plugging method and apparatus

#45
20210332673
2021-10-28

Expanding metal sealant for use with multilateral completion systems

#46
20210332662
2021-10-28

Method and system for creating metal-to-metal

#47
20210317914
2021-10-14

Metal to metal vee seal

#48
20210198973
2021-07-01

Washout prevention element for expandable metal sealing elements

#49
20210189842
2021-06-24

Pressure reducing metal elements for liner hangers

#50
20210189830
2021-06-24

Reactive metal sealing elements for a liner hanger

#51
20210172279
2021-06-10

Repairable seal assemblies for oil and gas applications

#52
20210115750
2021-04-22

Washout prevention element for expandable metal sealing elements

#53
20210040812
2021-02-11

Pipe coupling devices for oil and gas applications

#54
20210040810
2021-02-11

EXPANDABLE METAL GAS LIFT MANDREL PLUG

#55
20210032980
2021-02-04

Methods to monitor a metallic sealant deployed in a wellbore, methods to monitor fluid displacement, and downhole metallic sealant measurement systems

#56
20210017835
2021-01-21

Composite expandable metal elements with reinforcement

#57
20200370391
2020-11-26

Swellable metal packer with porous external sleeve

#58
20200362224
2020-11-19

Elastomer with an expandable metal

#59
20200332621
2020-10-22

Undersea hydraulic coupling with multiple pressure-energized metal seals

#60
20200332620
2020-10-22

Expandable eutectic alloy based downhole tool and methods of deploying such

#61
20200271228
2020-08-27

Method and system for fabrication of a metal cup for creating an annular seal within a wellbore

#62
20200240235
2020-07-30

Swellable metal for non-elastomeric O-rings, seal stacks, and gaskets

#63
20200224514
2020-07-16

Well with two casings

#64
20200072018
2020-03-05

Expandable metal packer system and methodology with annulus pressure compensation

#65
20190352996
2019-11-21

Undersea hydraulic coupling with multiple pressure-energized metal seals

#66
20190257171
2019-08-22

Ported U-cup annular wellhead hanger seal

#67
20190249524
2019-08-15

Methods for hanging liner from casing and articles derived therefrom

#68
20190093448
2019-03-28

Self-removing plug for pressure isolation in tubing of well

#69
20190093439
2019-03-28

Installation of an emergency casing slip hanger and annular packoff assembly having a metal to metal sealing system through the blowout preventer

#70
20190048678
2019-02-14

Sealing arrangement

#71
20190040709
2019-02-07

Test dart system and method

#72
20190032441
2019-01-31

Annular barrier for small diameter wells

#73
20190024828
2019-01-24

Metal to metal wedge ring seal

#74
20190003301
2019-01-03

Sealing device test systems and methods

#75
20180347308
2018-12-06

System and method for forming metal-to-metal seal

#76
20180266202
2018-09-20

Sealing apparatus and associated methods of manufacturing

#77
20180209238
2018-07-26

Cut to release packer extension

#78
20180171744
2018-06-21

Downhole plug assembly

#79
20180128076
2018-05-10

Composite Mandrel for use in subterranean formation

#80
20180094498
2018-04-05

Undersea hydraulic coupling with multiple pressure-energized metal seals

#81
20180080303
2018-03-22

Packer

#82
20180073323
2018-03-15

Expandable seal

#83
20180038190
2018-02-08

METHOD AND APPARATUS TO EFFECT INJECTION OF FLUIDS INTO A SUBSEA HORIZONTAL TREE

#84
20180016859
2018-01-18

Wellbore isolation devices and methods of use

#85
20170370176
2017-12-28

Split ring sealing assemblies

#86
20170342796
2017-11-30

Pressure control device

#87
20170218741
2017-08-03

Burst plug assembly with choke insert, fracturing tool and method of fracturing with same

#88
20170145775
2017-05-25

Metal to metal polished bore receptacle seal for liner hanger/seal assemblies

#89
20170138479
2017-05-18

Disintegrable and conformable metallic seal, and method of making the same

#90
20170108123
2017-04-20

Methods of forming superelastic seals

#91
20170101847
2017-04-13

Downhole string for drilling through a low pressure zone

#92
20170101840
2017-04-13

Installation of an emergency casing slip hanger and annular packoff assembly having a metal to metal sealing system through the blowout preventer

#93
20170037711
2017-02-09

Methods for hanging liner from casing and articles derived therefrom

#94
20170022775
2017-01-26

Stinger with metal c-ring seal

#95
20160376869
2016-12-29

Self-Removing Plug for Pressure Isolation in Tubing of Well

#96
20160333657
2016-11-17

Wear-resistant and self-lubricant bore receptacle packoff tool

#97
20160245040
2016-08-25

Metal to metal annulus seal with enhanced lock-down capacity

#98
20160237777
2016-08-18

Metal Chevron Seal

#99
20160168971
2016-06-16

Active external casing packer (ECP) for frac operations in oil and gas wells

#100
20160168946
2016-06-16

High-temperature, high-pressure, fluid-tight seal using a series of annular rings

#101
20160123471
2016-05-05

Superelastic nickel-titanium alloy downhole seals, wellbore tools including such seals, and related methods

#102
20160115761
2016-04-28

Isolation barrier

#103
20160102522
2016-04-14

Packer

#104
20160003000
2016-01-07

Isolation barrier

#105
20150260001
2015-09-17

Mudline suspension metal-to-metal sealing system

#106
20150218903
2015-08-06

Multi-layered temperature responsive pressure isolation device

#107
20150108723
2015-04-23

DOUBLE METAL TO METAL KX SEAL

#108
20150101813
2015-04-16

Methods for hanging liner from casing and articles derived therefrom

#109
20140319783
2014-10-30

Expandable high pressure and high temperature seal

#110
20140151064
2014-06-05

Hybrid-tieback seal assembly using method and system for interventionless hydraulic setting of equipment when performing subterranean operations

#111
20140138088
2014-05-22

Shape memory cup seal and method of use

#112
20140124193
2014-05-08

Metal chevron axial seal

#113
20130306329
2013-11-21

Method and wellbore system

#114
20130299176
2013-11-14

Hybrid-tieback seal assembly

#115
20130146276
2013-06-13

Flow control hanger and polished bore receptacle

#116
20120312556
2012-12-13

Seal

#117
20120299246
2012-11-29

Borehole seal, backup and method

#118
20120145409
2012-06-14

High collapse resistance solid expandable technology

#119
20120145381
2012-06-14

Foldable composite tubular structure

#120
20120125619
2012-05-24

Active external casing packer (ECP) for frac operations in oil and gas wells

#121
20110094756
2011-04-28

Systems and methods for initiating annular obstruction in a subsurface well

#122
20100294485
2010-11-25

High expansion metal seal system

#123
20100212899
2010-08-26

Downhole gap sealing element and method

#124
20100206575
2010-08-19

Self-energizing annular seal

#125
20100126733
2010-05-27

Packer

#126
20100090410
2010-04-15

EXPANDABLE METAL-TO-METAL SEAL

#127
20100038072
2010-02-18

Sealing and anchoring device for use in a well

#128
20090194945
2009-08-06

Energized composite metal to metal seal

#129
20090072485
2009-03-19

EXPANDABLE METAL-TO-METAL SEAL

#130
20090071641
2009-03-19

EXPANDABLE METAL-TO-METAL SEAL

#131
20090058017
2009-03-05

Downhole tubular seal system and method

#132
20080271894
2008-11-06

Method and apparatus for subterranean fracturing

#133
20080230236
2008-09-25

Packing element and method

#134
20080217000
2008-09-11

Casing patch

#135
20080087417
2008-04-17

Downhole tools having a seal ring with reinforcing element

#136
20070272405
2007-11-29

Ribbed sealing element and method of use

#137
20070261862
2007-11-15

Downhole method using multiple plugs

#138
20070235191
2007-10-11

Push/pull belleville stack for use with zertech MTM seal

#139
20070221384
2007-09-27

Frac system without intervention

#140
20070221373
2007-09-27

Disappearing plug

#141
20070029080
2007-02-08

Deformable member

#142
20060254778
2006-11-16

Method and system for tubing a borehole in single diameter

#143
20060186602
2006-08-24

Seal

#144
20050263296
2005-12-01

Deformable member

#145
20050178561
2005-08-18

Ribbed sealing element and method of use

#146
18169055
2024-02-27

Seal arrangement, method, and system

#147
18056879
2024-06-25

Stripper head system and method of use

#148
16442807
2021-12-21

Stage packer shoe with a metal cup system and method of use