Patents-Review.com
ClassID:

135311 ⎘

E21B17/08 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings; Couplings; joints Casing joints

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

GEOTHERMAL SYSTEM MATERIALS

 #2
20250347179
2025-11-13

WEDGE THREAD CONNECTION FOR TUBULAR GOODS

 #3
20250305380
2025-10-02

WELLHEAD SYSTEMS AND METHODS

 #4
20250263987
2025-08-21

CURVILINEAR SEALING SYSTEM

 #5
20250250864
2025-08-07

METHOD AND SYSTEM FOR REDUCING FRICTION IN RADIAL DRILLING AND JET DRILLING OPERATIONS

 #6
20250172047
2025-05-29

System, Method, and Apparatus for Centralizing a Downhole Casing and Connecting Portions Thereof

 #7
20250163763
2025-05-22

Connection Device for Casing Stubs

 #8
20250101814
2025-03-27

Pipe Connector

 #9
20240271490
2024-08-15

METHOD AND SYSTEM FOR REDUCING FRICTION IN RADIAL DRILLING AND JET DRILLING OPERATIONS

 #10
20240175341
2024-05-30

Fracing System with Threaded Block Connector and Variable Length Connector

 #11
20240175332
2024-05-30

GEOTHERMAL SYSTEM MATERIALS

 #12
20240093623
2024-03-21

Method and system for reducing friction in radial drilling and jet drilling operations

 #13
20240060382
2024-02-22

Oilfield Unitized Wellhead with Integrated Internal Hanger Retainer System

 #14
20230383609
2023-11-30

Curvilinear sealing system

 #15
20230304369
2023-09-28

Method and system for multilateral quick access in oil and gas industry

 #16
20230295996
2023-09-21

Oilfiled unitized wellhead with integrated internal hanger retainer system

 #17
20230279730
2023-09-07

Oil country tubular goods casing coupling

 #18
20230088330
2023-03-23

WEDGE THREAD CONNECTION FOR TUBULAR GOODS

 #19
20230008447
2023-01-12

ARRANGEMENT DEVICE FOR MULTIPLE SENSORS OUTSIDE BOREHOLE OF SLIDING MASS AND ARRANGEMENT METHOD

 #20
20220349269
2022-11-03

Casing strings and related methods of deployment in horizontal wells

 #21
20220235637
2022-07-28

Pipe connector

 #22
20220178207
2022-06-09

Casing float tool

 #23
20220127913
2022-04-28

Rotatable mandrel hanger

 #24
20220106842
2022-04-07

Curvilinear sealing system

 #25
20220074286
2022-03-10

Waveform energy generation systems and methods of enhancing matrix permeability in a subsurface formation

 #26
20220034217
2022-02-03

MEASURING SEALING QUALITY OF CONNECTIONS IN DOWNHOLE CASINGS

 #27
20220034172
2022-02-03

WELL INTEGRITY SMART JOINT

 #28
20220018202
2022-01-20

Well collapse reconnect method

 #29
20210396081
2021-12-23

Connectors for high temperature geothermal wells

 #30
20210332673
2021-10-28

Expanding metal sealant for use with multilateral completion systems

 #31
20210310339
2021-10-07

Systems for hanging structures in downhole environments

 #32
20210277751
2021-09-09

Methods and systems for hanging structures in downhole environments

 #33
20210262888
2021-08-26

In line inspection strain device method and apparatus for performing in line joint inspections

 #34
20210238932
2021-08-05

Oil country tubular goods casing coupling

 #35
20210215037
2021-07-15

Devices, systems, and methods for downhole event detection and depth determination

 #36
20210142515
2021-05-13

Using an acoustic device to identify external apparatus mounted to a tubular

 #37
20210133367
2021-05-06

Optimized visualization of loads and resistances for wellbore tubular design

 #38
20210115735
2021-04-22

CASING FLOAT TOOL

 #39
20210071807
2021-03-11

Reducing the risk of corrosion in pipelines

 #40
20210071806
2021-03-11

Reducing the risk of corrosion in pipelines

 #41
20210023663
2021-01-28

REMOTELY ACTIVATED CONNECTION DEVICE FOR A SPIRAL SHOULDER CONNECTION

 #42
20200408047
2020-12-31

Double-shouldered connection for drilling tubulars with large inside diameter

 #43
20200393065
2020-12-17

Vacuum insulated tubing for high pressure, high temperature wells, and systems and methods for use thereof, and methods for making

 #44
20200332601
2020-10-22

Casing float tool

 #45
20200325751
2020-10-15

MITIGATION OF CASING DEFORMATION ASSOCIATED WITH GEOLOGICAL SETTINGS PRONE TO CASING DEFORMATION POST HYDRAULIC FRACTURE INJECTION

 #46
20200284101
2020-09-10

Curvilinear sealing system

 #47
20200240570
2020-07-30

Coupling assembly and protective ring therefor

 #48
20200240214
2020-07-30

Casing float tool

 #49
20200200303
2020-06-25

Method for making a threaded connection for pipes, such as oil and gas pipes

 #50
20200102794
2020-04-02

Mechanically perforated well casing collar

 #51
20200072001
2020-03-05

Apparatus and method for running casing into a wellbore

 #52
20200048987
2020-02-13

Debris preventing downhole air lock device and method

 #53
20200040669
2020-02-06

Methods and systems for reducing drag and friction during drilling

 #54
20200024912
2020-01-23

Downhole location indication system

 #55
20190360301
2019-11-28

CASING FLOAT TOOL

 #56
20190330929
2019-10-31

Wedge thread connection for tubular goods

 #57
20190218865
2019-07-18

Apparatus for transmitting torque through a work string

 #58
20190211632
2019-07-11

Threaded joint for oil well steel pipe

 #59
20190151893
2019-05-23

Latex-bonded metal and cement members

 #60
20190128075
2019-05-02

Oil country tubular goods casing coupling

 #61
20190032820
2019-01-31

Threaded joint for steel pipe

 #62
20190003266
2019-01-03

APPARATUS FOR COUPLING RUPTURE DISC AND PERFORATED CASING

 #63
20180371869
2018-12-27

Float sub with pressure-frangible plug

 #64
20180371847
2018-12-27

Joint element, a casing string including such a joint element and a method for compensating of forces due to thermal effects in a casing string

 #65
20180363401
2018-12-20

Casing exit joint with guiding profiles and methods for use

 #66
20180363389
2018-12-20

Connectors for high temperature geothermal wells

 #67
20180334881
2018-11-22

Pressure perforated well casing collar and method of use

 #68
20180328119
2018-11-15

Curvilinear sealing system

 #69
20180320455
2018-11-08

WELLSITE CASING WITH INTEGRATED COUPLING AND METHOD OF MAKING SAME

 #70
20180306012
2018-10-25

Lube and bleed casing adaptor

 #71
20180274339
2018-09-27

Mitigating corrosion of carbon steel tubing and surface scaling deposition in oilfield applications

 #72
20180266189
2018-09-20

Reduced drag casing connection

 #73
20180259098
2018-09-13

Method for making a threaded connection for pipes, such as oil and gas pipes

 #74
20180223607
2018-08-09

TOE CASING

 #75
20180202260
2018-07-19

Casing float tool

 #76
20180155988
2018-06-07

METHOD OF DRILLING A BOREHOLE IN AN EARTH FORMATION

 #77
20180080287
2018-03-22

Threaded pipe joint

 #78
20180051835
2018-02-22

Threaded connection

 #79
20180010449
2018-01-11

Casing coupling having communication unit for evaluating downhole conditions

 #80
20180010426
2018-01-11

SLIP STOP FRICTION SUB

 #81
20180001571
2018-01-04

Fluid system and method of manufacture via friction welding

 #82
20170370164
2017-12-28

Apparatus for reciprocation and rotation of a conveyance string in a wellbore

 #83
20170370162
2017-12-28

TUBULAR COMPONENT WITH A HELICAL ABUTMENT

 #84
20170335666
2017-11-23

Combined casing fill-up and drill pipe flowback tool and method

 #85
20170183941
2017-06-29

Outer casing string and method of installing same

 #86
20170159859
2017-06-08

PIPE COUPLING WITH LOAD DEFLECTING REGION

 #87
20170159853
2017-06-08

Threaded connection

 #88
20170138153
2017-05-18

Casing float tool

 #89
20170114942
2017-04-27

Coupling assembly and protective ring therefor

 #90
20170101828
2017-04-13

Pre-installed anti-rotation key for threaded connectors

 #91
20170081954
2017-03-23

PIPE JOINT LOCATION DETECTION SYSTEM AND METHOD

 #92
20170016278
2017-01-19

Downhole production casing string

 #93
20160369920
2016-12-22

Anti-rotation key for threaded connectors

 #94
20160281441
2016-09-29

Tubular connection center shoulder seal

 #95
20160265320
2016-09-15

Milling well casing using electromagnetic pulse

 #96
20160258227
2016-09-08

Casing joint assembly

 #97
20160251912
2016-09-01

Downhole tool protection during wellbore cementing

 #98
20160245433
2016-08-25

Threaded connection for pipes, such as oil and gas pipes

 #99
20160237805
2016-08-18

Methods and systems for orienting a tool in a wellbore

 #100
20160237777
2016-08-18

Metal Chevron Seal

 #101
20160230119
2016-08-11

Threaded joint for pipes

 #102
20160178095
2016-06-23

Threaded joint for oil country tubular goods

 #103
20160146381
2016-05-26

Assembly for producing a threaded connection for drilling and operating hydrocarbon wells, and method for producing such a threaded connection

 #104
20160047502
2016-02-18

Quick connection arrangements with locking mechanisms

 #105
20160024859
2016-01-28

Downhole system using packer setting joint and method

 #106
20160010432
2016-01-14

Casing joint assembly for producing an annulus gas cap

 #107
20160010400
2016-01-14

Landing collar, downhole system having landing collar, and method

 #108
20150211329
2015-07-30

Well Casing Assemblies, Systems, and Methods for Setting Casing in Underground Platforms

 #109
20150204154
2015-07-23

Segmented locking ring for a wellhead

 #110
20150167401
2015-06-18

Thermally expandable casing collar

 #111
20150152691
2015-06-04

Method and connector assembly for connecting tubular members

 #112
20150060043
2015-03-05

Flexible electrical submersible pump and pump assembly

 #113
20150048611
2015-02-19

Slip-on connector to grip and seal on smooth OD pipe/casing and method of use

 #114
20150041151
2015-02-12

Rotating wellhead hanger assemblies

 #115
20150027738
2015-01-29

Method and system for one-trip hanger installation

 #116
20150021049
2015-01-22

Swellable casing anchor

 #117
20150008667
2015-01-08

TIGHTLY THREADED JOINT FOR OIL FIELD PIPES

 #118
20150001841
2015-01-01

Threaded joint for pipes

 #119
20140367118
2014-12-18

EXPANDABLE TRANSLATING JOINT

 #120
20140352979
2014-12-04

Tool for centering a casing or liner in a borehole and method of use

 #121
20140333061
2014-11-13

Flush fitting pipe lining system

 #122
20140319831
2014-10-30

Casing connection

 #123
20140311753
2014-10-23

Rotating mandrel casing hangers

 #124
20140305659
2014-10-16

System and method for rotating casing string

 #125
20140262344
2014-09-18

Drillable slip

 #126
20140262331
2014-09-18

Plug and perforate using casing profiles

 #127
20140238690
2014-08-28

Curved casing pipe with timed connections

 #128
20140231092
2014-08-21

Annular pressure relief system

 #129
20140217725
2014-08-07

Tubular connection center shoulder seal

 #130
20140216756
2014-08-07

Casing float tool

 #131
20140196910
2014-07-17

Apparatus and methods of running casing

 #132
20140174763
2014-06-26

Liner hanger system

 #133
20140166308
2014-06-19

Anti-rotation wedge

 #134
20140158372
2014-06-12

Bladder type crimper

 #135
20140054887
2014-02-27

Tubular connector having a secondary shoulder

 #136
20140008082
2014-01-09

Tubular connection

 #137
20130333876
2013-12-19

Systems and methods of supporting a multilateral window

 #138
20130319691
2013-12-05

Expandable liner hanger and method of use

 #139
20130292138
2013-11-07

Seal stem

 #140
20130277961
2013-10-24

Tubular threaded joint having improved low temperature performance

 #141
20130228343
2013-09-05

Methods for installing shoulder rings in threaded pipe couplings

 #142
20130213639
2013-08-22

Milling well casing using electromagnetic pulse

 #143
20130015657
2013-01-17

Tubular threaded connection

 #144
20120325361
2012-12-27

Expansible threaded joint and method for making same

 #145
20120247779
2012-10-04

INHIBITING LIQUID LOADING, CORROSION AND/OR SCALING IN OILFIELD TUBULARS

 #146
20120235404
2012-09-20

Assembly for producing a threaded connection, method for making up and breaking out said connection and use of said connection in a work over riser

 #147
20120187634
2012-07-26

Metal sealing adjustable casing sub

 #148
20120145409
2012-06-14

High collapse resistance solid expandable technology

 #149
20120145381
2012-06-14

Foldable composite tubular structure

 #150
20120139237
2012-06-07

PIPE CONNECTION AND DEVICE FOR FORMING A PIPE CONNECTION

 #151
20120119489
2012-05-17

TIGHTLY THREADED JOINT FOR OIL FIELD PIPES

 #152
20120043756
2012-02-23

Tubular threaded connection

 #153
20120018171
2012-01-26

Outer casing string and method of installing same

 #154
20110308793
2011-12-22

HIGH INTEGRITY HANGER AND SEAL FOR CASING

 #155
20110290476
2011-12-01

Well assembly coupling

 #156
20110290011
2011-12-01

Identification of casing collars while drilling and post drilling using LWD and wireline measurements

 #157
20110240283
2011-10-06

Well assembly with a millable member in an opening

 #158
20110226490
2011-09-22

Method and system for one-trip hanger installation

 #159
20110168412
2011-07-14

Large bore packer and methods of setting same

 #160
20110156385
2011-06-30

Pipe Connection

 #161
20110067880
2011-03-24

Bellows type adjustable casing

 #162
20110037255
2011-02-17

Fatigue resistant pipe string component

 #163
20110037251
2011-02-17

Wellhead pipe coupling

 #164
20110025051
2011-02-03

Threaded joint for steel pipes

 #165
20110005775
2011-01-13

Apparatus and methods to protect connections

 #166
20100301600
2010-12-02

Threaded joint for pipes

 #167
20100283239
2010-11-11

Sealed threaded tubular connection which is resistant to successive pressure loads

 #168
20100147509
2010-06-17

Large bore packer and methods of setting same

 #169
20100096143
2010-04-22

Method for installing wellbore string devices

 #170
20100089591
2010-04-15

Expandable liner hanger and method of use

 #171
20100078178
2010-04-01

Smooth bore latch for tie back receptacle extension

 #172
20100032170
2010-02-11

METHOD AND APPARATUS FOR RUNNING TUBULARS

 #173
20100032166
2010-02-11

Shoulder ring with axial retention

 #174
20100018772
2010-01-28

Articulated extraction pipe

 #175
20100007089
2010-01-14

Metal seal adjustable casing sub

 #176
20090321069
2009-12-31

SYSTEM AND METHOD FOR CONNECTING MULTIPLE STAGE COMPLETIONS

 #177
20090229838
2009-09-17

Large bore packer and methods of setting same

 #178
20080303274
2008-12-11

High-strength threaded joints, particularly for lined tubes

 #179
20080277933
2008-11-13

Thread form for tubular connections

 #180
20080277880
2008-11-13

Connector Assembly

 #181
20080179884
2008-07-31

Coupling for drilling-with-casing operations

 #182
20080144759
2008-06-19

Method of Coupling Tubular Member

 #183
20080115939
2008-05-22

Radial Expansion of Tubular Members

 #184
20080110643
2008-05-15

Large bore packer and methods of setting same

 #185
20080066930
2008-03-20

Protective Sleeve For Expandable Tubulars

 #186
20080066929
2008-03-20

Protective Sleeve For Expandable Tubulars

 #187
20080054633
2008-03-06

Scalloped wedge threads

 #188
20080012321
2008-01-17

Resistance to fatigue of a threaded tubular connection

 #189
20080007060
2008-01-10

Coupling tubulars

 #190
20080007059
2008-01-10

Submersible pump drop pipe and casing assembly connection and method of manufacture

 #191
20070267199
2007-11-22

Apparatus and methods to protect connections

 #192
20070227742
2007-10-04

Casing transition nipple and method of casing a well to facilitate well completion, re-completion and workover

 #193
20070176424
2007-08-02

Preloaded Tubular Connector

 #194
20070163785
2007-07-19

Expandable tubular

 #195
20070144746
2007-06-28

System and method for connecting multiple stage completions

 #196
20070056155
2007-03-15

Method of installing flange on tubular body at desired elevation

 #197
20060254778
2006-11-16

Method and system for tubing a borehole in single diameter

 #198
20060213668
2006-09-28

A Method of Coupling Tubular Member

 #199
20060185855
2006-08-24

Retractable joint and cementing shoe for use in completing a wellbore

 #200
20060162145
2006-07-27

Method for producing a threaded tubular connection sealed by radial expansion

 #201
20060113086
2006-06-01

Protective sleeve for expandable tubulars

 #202
20060113085
2006-06-01

Dual well completion system

 #203
20060107514
2006-05-25

Method for coupling and expanding tubing

 #204
20060065406
2006-03-30

Interposed joint sealing layer method of forming a wellbore casing

 #205
20060048948
2006-03-09

Anchor hangers

 #206
20050247453
2005-11-10

Magnetic impulse applied sleeve method of forming a wellbore casing

 #207
20050242583
2005-11-03

Coupling for drilling-with-casing operations

 #208
20050236187
2005-10-27

Drilling with casing

 #209
20050223535
2005-10-13

Method and apparatus for forming a mono-diameter wellbore casing

 #210
20050183863
2005-08-25

Method of coupling a tubular member to a preexisting structure

 #211
20050172473
2005-08-11

Method and apparatus for forming a mono-diameter wellbore casing

 #212
20050166388
2005-08-04

Method and apparatus for forming a mono-diameter wellbore casing

 #213
20050150660
2005-07-14

Method and apparatus for forming a mono-diameter wellbore casing

 #214
20050144772
2005-07-07

Method and apparatus for forming a mono-diameter wellbore casing

 #215
20050144771
2005-07-07

Method and apparatus for forming a mono-diameter wellbore casing

 #216
20050138790
2005-06-30

Method and apparatus for forming a mono-diameter wellbore casing

 #217
20050133223
2005-06-23

Expandable tubular connection

 #218
20050081358
2005-04-21

Radial expansion of tubular members

 #219
20050077051
2005-04-14

Radial expansion of tubular members

 #220
20050045341
2005-03-03

Radial expansion of tubular members

 #221
20050045324
2005-03-03

Radial expansion of tubular members

 #222
20050039928
2005-02-24

Radial expansion of tubular members

 #223
20050039910
2005-02-24

Expandable tubes with overlapping end portions

 #224
20050029812
2005-02-10

Expandable slotted tubing string and method for connecting such a tubing string

 #225
20050028988
2005-02-10

Radial expansion of tubular members

 #226
18904269
2026-01-06

Casing collar locator

 #227
17233655
2022-04-12

Interventionless methods and systems for testing a liner top

 #228
17225334
2022-07-05

Downhole tool with compliant metal-to-metal seal

 #229
16005528
2020-06-23

Wellhead internal latch ring apparatus, system and method

 #230
15710531
2020-05-12

Casing string torque transfer and suspension system and method for mandrel casing hangers