Patents-Review.com
ClassID:

135473 ⎘

E21B33/05 - CPC Classification

Classification description:

Sealing or packing boreholes or wells; Surface sealing or packing; Well heads; Setting-up thereof; Casing heads; Suspending casings or tubings in well heads Cementing-heads, e.g. having provision for introducing cementing plugs

Recent Application in this class:
#1
20250347190
2025-11-13

WELL ABANDONMENT AND SEVERANCE OF CONTROL LINES

 #2
20250290385
2025-09-18

MELTABLE MATERIAL TO SEAL FLOW-BY PASSAGEWAYS

 #3
20250277421
2025-09-04

SYSTEMS AND METHODS WITH SEAL ELEMENTS SHAPED TO EFFICIENTLY CEMENT CASING AND SEAL A HANGER IN A WELLHEAD HOUSING

 #4
20250270903
2025-08-28

FLUOROPLASTIC EXPANDABLE LINER HANGER ELEMENTS FOR GEOTHERMAL AND CORROSIVE ENVIRONMENTS

 #5
20250163774
2025-05-22

METHOD AND APPARATUS FOR DROPPING A PUMP DOWN PLUG OR BALL

 #6
20250137345
2025-05-01

FLOAT SHOE WITH ANTI-COLLAPSE FEATURE FOR STRING CEMENTATION

 #7
20250052128
2025-02-13

METHOD AND APPARATUS FOR DROPPING A PUMP DOWN PLUG OR BALL

 #8
20250012164
2025-01-09

CONCRETE CORE FOR CEMENTING PLUGS

 #9
20240426188
2024-12-26

SYSTEMS AND METHODS FOR CEMENTING CASING AND SEALING A HANGER IN A WELLHEAD HOUSING

 #10
20240368961
2024-11-07

PROTECTING THE CASING-CASING ANNULUS IN HYDROCARBON PRODUCING WELLBORES

 #11
20240287864
2024-08-29

Well Abandonment And Severance Of Control Lines

 #12
20240254852
2024-08-01

FLUTED ROTATING TUBING HANGER FOR CEMENTED COMPLETION APPLICATIONS - BTF HANGER

 #13
20240167359
2024-05-23

Method and apparatus for dropping a pump down plug or ball

 #14
20240141744
2024-05-02

Cementing head

 #15
20240141731
2024-05-02

Rigless drilling and wellhead installation

 #16
20240068320
2024-02-29

Method and apparatus for dropping a pump down plug or ball

 #17
20230304371
2023-09-28

Double grip retention for wellbore installations

 #18
20230123324
2023-04-20

Method and apparatus for dropping a pump down plug or ball

 #19
20230050637
2023-02-16

Method and apparatus for dropping a pump down plug or ball

 #20
20230003095
2023-01-05

Tool and method for cementing an annulus in a subsea oil or gas well

 #21
20220268110
2022-08-25

Systems and Methods For Rotating a Casing String In a Wellbore

 #22
20220195810
2022-06-23

Cementing adapter systems and methods

 #23
20220195805
2022-06-23

Rigless drilling and wellhead installation

 #24
20220034184
2022-02-03

Double grip retention for wellbore installations

 #25
20220003064
2022-01-06

Cementing head apparatus

 #26
20210262314
2021-08-26

Method and apparatus for dropping a pump down plug or ball

 #27
20210238946
2021-08-05

Cement head and fiber sheath for top plug fiber deployment

 #28
20210230961
2021-07-29

Method and apparatus for dropping a pump down plug or ball

 #29
20210215643
2021-07-15

Real-time monitoring of mass loss from erosive flow

 #30
20210054715
2021-02-25

Well operations with grouped particle diverter plug

 #31
20200378213
2020-12-03

Method and apparatus for setting an integrated hanger and annular seal before cementing

 #32
20200378209
2020-12-03

CEMENT HEAD WITH MOVABLE PLUG CAGE AND PRESSURE BALANCED PLUG LAUNCH INDICATOR

 #33
20200318453
2020-10-08

CONCRETE CORE FOR CEMENTING PLUGS

 #34
20200291741
2020-09-17

Method and apparatus for dropping a pump down plug or ball

 #35
20200248525
2020-08-06

Well operations with grouped particle diverter plug

 #36
20200199963
2020-06-25

Method and apparatus for dropping a pump down plug or ball

 #37
20200141199
2020-05-07

Seal configuration for top drive swivel apparatus and method

 #38
20200063517
2020-02-27

Arrangement for providing a flowable solidifier into a subsea hydrocarbon well

 #39
20200024927
2020-01-23

Wellbore cementing system

 #40
20190368302
2019-12-05

Head apparatus

 #41
20190211645
2019-07-11

Method and apparatus for dropping a pump down plug or ball

 #42
20190195045
2019-06-27

Method and apparatus for dropping a pump down plug or ball

 #43
20180334875
2018-11-22

Adapting a top drive cement head to a casing running tool

 #44
20180328126
2018-11-15

Seal configuration for top drive swivel apparatus and method

 #45
20180328121
2018-11-15

Method and apparatus for automated connection of a fluid conduit

 #46
20180313206
2018-11-01

Tracking and measurements associated with cement plugs

 #47
20180274321
2018-09-27

System and method for offline suspension or cementing of tubulars

 #48
20180245418
2018-08-30

Centralized control of wellbore cement head and pumping unit

 #49
20180223623
2018-08-09

Method and apparatus for dropping a pump down plug or ball

 #50
20180223615
2018-08-09

Liner deployment assembly having full time debris barrier

 #51
20180142528
2018-05-24

WIPER PLUG SEAL INTEGRITY SYSTEM AND METHOD

 #52
20180038189
2018-02-08

Method and apparatus for dropping a pump down plug or ball

 #53
20170370169
2017-12-28

Plug launching system and method

 #54
20170298700
2017-10-19

Method and apparatus for automated connection of a fluid conduit

 #55
20170096870
2017-04-06

Cement head system and method for operating a cement head system

 #56
20170089165
2017-03-30

Backpressure ball

 #57
20170067303
2017-03-09

Genset for top drive unit

 #58
20170044850
2017-02-16

Apparatus for gripping a tubular on a drilling rig

 #59
20170037699
2017-02-09

Method and apparatus for dropping a pump down plug or ball

 #60
20170016301
2017-01-19

Method and system for temporarily locking a tubular

 #61
20160369573
2016-12-22

Method of incorporating remote communication with oilfield tubular handling apparatus

 #62
20160356112
2016-12-08

Atmosphere to pressure ball drop apparatus

 #63
20160333656
2016-11-17

Method and apparatus for dropping a pump down plug or ball

 #64
20160201414
2016-07-14

System for releasing a cement plug

 #65
20160153264
2016-06-02

Safety device for retrieving component within wellhead

 #66
20160145953
2016-05-26

Method and apparatus for automated connection of a fluid conduit

 #67
20160102521
2016-04-14

Method and apparatus for performing cementing operations

 #68
20160052749
2016-02-25

Cement head stabber and method for lifting for installation

 #69
20150337648
2015-11-26

Dart detector for wellbore tubular cementation

 #70
20150267495
2015-09-24

Insert for use with wellhead housing having flow-by path

 #71
20150260011
2015-09-17

Method and apparatus for dropping a pump down plug or ball

 #72
20150218902
2015-08-06

Method and apparatus for dropping a pump down plug or ball

 #73
20150184483
2015-07-02

Ball drop wellhead control apparatus

 #74
20150068731
2015-03-12

Subterranean tool for release of darts adjacent their intended destinations

 #75
20150047826
2015-02-19

Horizontal frac ball injector

 #76
20150041116
2015-02-12

Coupling for a cement head

 #77
20150041115
2015-02-12

Seal configuration for top drive swivel apparatus and method

 #78
20150034296
2015-02-05

Low profile, high capacity ball injector

 #79
20150021043
2015-01-22

Safety device for retrieving component within wellhead

 #80
20150021024
2015-01-22

Atmosphere to pressure ball drop apparatus

 #81
20150000891
2015-01-01

Cementing tool

 #82
20140374092
2014-12-25

Method of signaling passage of objects using tattle-tale apparatus

 #83
20140332230
2014-11-13

Double swivel apparatus and method

 #84
20140260732
2014-09-18

Cement device release mechanism

 #85
20140231099
2014-08-21

Method and apparatus for dropping a pump down plug or ball

 #86
20140224473
2014-08-14

METHODS AND MULTI-PURPOSE APPARATUS FOR DISPENSING AND CIRCULATING FLUID IN WELLBORE CASING

 #87
20140182852
2014-07-03

Method and apparatus for dropping a pump down plug or ball

 #88
20140151044
2014-06-05

Method and apparatus for performing cementing operations on top drive rigs

 #89
20140076538
2014-03-20

Inner string cementing tool

 #90
20140008084
2014-01-09

Multiple activation-device launcher for a cementing head

 #91
20140008083
2014-01-09

Remote Operation of Setting Tools for Liner Hangers

 #92
20130327532
2013-12-12

Remote Operation of Cementing Head

 #93
20130220610
2013-08-29

Methods and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing

 #94
20130161005
2013-06-27

MODULAR DART LAUNCHER WITH STATUS INDICATOR

 #95
20130153237
2013-06-20

Ball drop wellhead control apparatus

 #96
20130146310
2013-06-13

Method and apparatus for dropping a pump down plug or ball

 #97
20130140024
2013-06-06

Method and apparatus for dropping a pump down plug or ball

 #98
20130092397
2013-04-18

Scalloped landing ring

 #99
20130092375
2013-04-18

Liner wiper plug with bypass option

 #100
20130075106
2013-03-28

ELECTRICAL GENERATOR FOR A CEMENTING MANIFOLD

 #101
20130037258
2013-02-14

Activation-Device Launcher For A Cementing Head

 #102
20120305270
2012-12-06

Down-hole actuation device storage apparatus and method for launching

 #103
20120292046
2012-11-22

Cement head

 #104
20120273198
2012-11-01

Ball and dart launcher with parallel axis release

 #105
20120234534
2012-09-20

Wellhead Ball Launch and Detection System and Method

 #106
20120234531
2012-09-20

Seal configuration for top drive swivel apparatus and method

 #107
20120211219
2012-08-23

Horizontal frac ball injector

 #108
20120175117
2012-07-12

Methods and devices for forming a wellbore with casing

 #109
20120152525
2012-06-21

Low profile, high capacity ball injector

 #110
20120118567
2012-05-17

Method and Apparatus for Maintaining Pressure In Well Cementing During Curing

 #111
20120097394
2012-04-26

Modular dart launching valve

 #112
20120000675
2012-01-05

Multiple activation-device launcher for a cementing head

 #113
20110290485
2011-12-01

Method and apparatus for maintaining pressure in well cementing during curing

 #114
20110290481
2011-12-01

Apparatus and method for launching plugs in cementing operations

 #115
20110278005
2011-11-17

Method and system for temporarily locking a tubular

 #116
20110247834
2011-10-13

Multiple activation-device launcher for a cementing head

 #117
20110240316
2011-10-06

Apparatus and method for launching plugs in cementing operations

 #118
20110232923
2011-09-29

Method and apparatus for dropping a pump down plug or ball

 #119
20110232919
2011-09-29

Top drive casing system

 #120
20110226465
2011-09-22

Seal configuration for top drive swivel apparatus and method

 #121
20110214853
2011-09-08

Tattle-tale apparatus

 #122
20110174483
2011-07-21

Apparatus for gripping a tubular on a drilling rig

 #123
20110168380
2011-07-14

Cement head with integrated energy supply for operating valves

 #124
20110139435
2011-06-16

Casing make-up and running tool adapted for fluid and cement control

 #125
20110132625
2011-06-09

Method and apparatus for dropping a pump down plug or ball

 #126
20110114306
2011-05-19

Methods and devices for forming a wellbore with casing

 #127
20110067866
2011-03-24

Equipment for remote launching of cementing plugs

 #128
20110067865
2011-03-24

Equipment for remote launching of cementing plugs

 #129
20110048726
2011-03-03

Internal tree cap and ITC running tool

 #130
20110048712
2011-03-03

Method and apparatus for dropping a pump down plug or ball

 #131
20110048710
2011-03-03

Method and apparatus for performing cementing operations on top drive rigs

 #132
20100294511
2010-11-25

Down-hole actuation device storage apparatus and method for launching

 #133
20100294503
2010-11-25

Subsea cementing plug system with plug launching tool

 #134
20100288484
2010-11-18

Seal configuration for top drive swivel apparatus and method

 #135
20100282478
2010-11-11

Activation-device launcher for a cementing head

 #136
20100252251
2010-10-07

Safety device for retrieving component within wellhead

 #137
20100218936
2010-09-02

Seal configuration for top drive swivel apparatus and method

 #138
20100200222
2010-08-12

Method and apparatus for performing cementing operations

 #139
20100175891
2010-07-15

DART LAUNCHER FOR WELL CEMENTING OPERATIONS

 #140
20100101792
2010-04-29

Cement head

 #141
20100101775
2010-04-29

Pressure driven apparatus for sequential control of a cementing head

 #142
20100096132
2010-04-22

Methods and devices for forming a wellbore with casing

 #143
20100089594
2010-04-15

Method and apparatus for dropping a pump down plug or ball

 #144
20100084145
2010-04-08

Multiple activation-device launcher for a cementing head

 #145
20090223666
2009-09-10

Top drive swivel apparatus and method

 #146
20080303266
2008-12-11

Coupling apparatus

 #147
20080296012
2008-12-04

Apparatus and method for providing fluid and projectiles to downhole tubulars

 #148
20080283251
2008-11-20

Method and apparatus for dropping a pump down plug or ball

 #149
20080283244
2008-11-20

Method and apparatus for dropping a pump down plug or ball

 #150
20080251249
2008-10-16

Safety cement plug launch system

 #151
20080202751
2008-08-28

Methods and devices for forming a wellbore with casing

 #152
20080190613
2008-08-14

METHODS FOR ACTUATING A DOWNHOLE TOOL

 #153
20080190611
2008-08-14

Systems for actuating a downhole tool

 #154
20080179058
2008-07-31

Top drive swivel apparatus and method

 #155
20080110637
2008-05-15

Top drive casing system

 #156
20080099196
2008-05-01

Casing make-up and running tool adapted for fluid and cement control

 #157
20080067810
2008-03-20

Cementing swivel and retainer arm assembly and method

 #158
20080059073
2008-03-06

Methods and apparatus for handling and drilling with tubulars or casing

 #159
20080047749
2008-02-28

Methods and apparatus for applying torque and rotation to connections

 #160
20080041578
2008-02-21

Seal configuration for top drive swivel apparatus and method

 #161
20070272403
2007-11-29

Seal configuration for top drive swivel apparatus and method

 #162
20070227741
2007-10-04

Well servicing methods and systems

 #163
20070152445
2007-07-05

Coupling apparatus

 #164
20070137870
2007-06-21

Method and means to seal the casing-by-casing annulus at the surface for reverse circulation cement jobs

 #165
20070131416
2007-06-14

Apparatus for gripping a tubular on a drilling rig

 #166
20070102159
2007-05-10

Plug systems and methods for using plugs in subterranean formations

 #167
20070102158
2007-05-10

Plug systems and methods for using plugs in subterranean formations

 #168
20060289154
2006-12-28

Top drive swivel apparatus and method

 #169
20060283594
2006-12-21

Method and apparatus for transferring rig weight to tubulars

 #170
20060237186
2006-10-26

Cementing system for wellbores

 #171
20060131018
2006-06-22

Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore

 #172
20060076135
2006-04-13

Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore

 #173
20060027360
2006-02-09

Tool for fluid filling and circulation during oilfield well tubing

 #174
20060027122
2006-02-09

Cementing head

 #175
20060016600
2006-01-26

Methods and systems for cementing wells that lack surface casing

 #176
20050247458
2005-11-10

Methods and apparatus for use in subterranean cementing operations

 #177
20050211431
2005-09-29

Cementing manifold assembly

 #178
20050183857
2005-08-25

Removable surface pack-off device for reverse cementing applications

 #179
20050103492
2005-05-19

Plug systems and methods for using plugs in subterranean formations

 #180
20050034863
2005-02-17

Apparatus and method of detecting interfaces between well fluids

 #181
20050034853
2005-02-17

Top drive swivel apparatus and method

 #182
20050000691
2005-01-06

Methods and apparatus for handling and drilling with tubulars or casing

 #183
18791229
2025-02-04

Hose lift and connection assembly and method of use with a top drive cement head

 #184
18735404
2025-10-21

Puddle job with delayed setting of resin via a polymerization reaction with an activator

 #185
18636300
2024-11-19

Method for dewatering coal mine goaf by crossing neighboring goaf

 #186
18147876
2023-10-10

Subsea coiled tubing drilling system and subsea drilling device thereof

 #187
17483420
2023-08-08

Oil well rotating cement head

 #188
15962544
2019-07-02

Method and apparatus for cementing while running casing in a well bore

 #189
15461997
2018-05-01

Method and apparatus for cementing while running casing in a well bore