ClassID:

135304

E21B17/043 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings; Couplings; joints between rod and bit or between rod and rod; Threaded with locking means

Recent Application in this class:
#1
20260117647
2026-04-30

SYSTEMS, METHODS AND APPARATUS FOR DOWNHOLE MONITORING OF PRODUCTION CONDITIONS USING EM TELEMETRY

#2
20250341135
2025-11-06

ORIENTED PERFORATING SYSTEM

#3
20250277548
2025-09-04

DOWNHOLE TOOL WITH CRACK COMPLIANT SEAL AND MECHANICAL STRENGTHENING FEATURE AT A JOINT THEREOF

#4
20250137329
2025-05-01

THREADED JOINT WITH ANTI-UNSCREWING DEVICE

#5
20250067127
2025-02-27

INNER BORE COUPLING ASSEMBLY

#6
20250034953
2025-01-30

THREADED CONNECTION FOR EXPLORATION AND PRODUCTION OF A HYDROCARBON WELL

#7
20250027372
2025-01-23

A TOOL STRING TRANSPORTATION DEVICE

#8
20250003532
2025-01-02

DOWNHOLE TOOL WITH CRACK COMPLIANT SEAL AND MECHANICAL STRENGTHENING FEATURE AT A JOINT THEREOF

#9
20240392630
2024-11-28

COMPLETING AND WORKING OVER A WELLBORE

#10
20240360728
2024-10-31

MECHANICALLY ACTUATED TUBULAR DRILLING, REAMING AND RUNNING TOOL WITH SLIP SET CONTROL

#11
20240287857
2024-08-29

CONTRACTION JOINT FOR FIBER OPTICS INTELLIGENT COMPLETION

#12
20240247746
2024-07-25

TUBULAR WITH SCREW THREAD

#13
20240229985
2024-07-11

SELF-LOCKING THREADED CONNECTION PARTIALLY IN NON-LOCKING ENGAGEMENT

#14
20240200411
2024-06-20

Threaded connection for exploration and production of a hydrocarbon well

#15
20240077153
2024-03-07

Lockable connection between tubular members

#16
20240027001
2024-01-25

THREAD CONNECTOR LOCK

#17
20230400126
2023-12-14

SELF-LOCKING THREADED CONNECTION PARTIALLY IN NON-LOCKING ENGAGEMENT

#18
20230358104
2023-11-09

ORIENTED PERFORATING SYSTEM

#19
20230349238
2023-11-02

Downhole tool for connecting with a conveyance line

#20
20230323745
2023-10-12

LINER SYSTEM AND METHOD

#21
20230265724
2023-08-24

Threaded connection for exploration and production of a hydrocarbon well

#22
20230265723
2023-08-24

Connection assembly

#23
20230193701
2023-06-22

Dual pipe drill head quick interchange joint

#24
20230175326
2023-06-08

ALIGNMENT ASSEMBLY FOR DOWNHOLE TOOLS AND RELATED METHODS

#25
20230151912
2023-05-18

PIPE CONNECTION

#26
20230125337
2023-04-27

Locking apparatus for drilling rig components

#27
20230098316
2023-03-30

JUNCTIONAL HEMORRHAGE OCCLUSION DEVICE

#28
20230066104
2023-03-02

Self-locking threaded connection partially in non-locking engagement

#29
20230027183
2023-01-26

Threaded connection partially in a self-locking engagement with an external shoulder capable to resist elevated torque

#30
20230016759
2023-01-19

Alignment sub and perforating gun assembly with alignment sub

#31
20220307639
2022-09-29

Tubular with screw thread

#32
20220307330
2022-09-29

Oriented perforating system

#33
20220243539
2022-08-04

Connector for wellbore tubulars

#34
20220178231
2022-06-09

Apparatus and method for securing end pieces to a mandrel

#35
20220170328
2022-06-02

Torque transfer and control apparatus for a drilling tool

#36
20220127912
2022-04-28

Sleeved gun connection

#37
20220120145
2022-04-21

Dual pipe drill head quick interchange joint

#38
20220010629
2022-01-13

System and method for anti-rotation between tubulars

#39
20210396081
2021-12-23

Connectors for high temperature geothermal wells

#40
20210388680
2021-12-16

Self-locking coupler

#41
20210381320
2021-12-09

Mechanically actuated tubular drilling, reaming and running tool with slip set control

#42
20210348703
2021-11-11

Connection

#43
20210301599
2021-09-30

Alignment sub and orienting sub adapter

#44
20210285292
2021-09-16

Slimline stop collar with solid cam ring

#45
20210277753
2021-09-09

Orienting sub

#46
20210246738
2021-08-12

Quick coupling drill pipe connector

#47
20210222808
2021-07-22

Connector assembly and method

#48
20210190242
2021-06-24

Lockable connection between tubular members

#49
20210172262
2021-06-10

Telescopic drill rod

#50
20210148410
2021-05-20

Torque transfer system

#51
20210047904
2021-02-18

Apparatus and method for securing end pieces to a mandrel

#52
20210010331
2021-01-14

Downhole motor that improved thread fastening structure

#53
20200340306
2020-10-29

Connection assembly

#54
20200325734
2020-10-15

Threaded connection partially in a self-locking engagement

#55
20200309292
2020-10-01

System and method for auxiliary line connections

#56
20200291730
2020-09-17

Downhole disconnect tool

#57
20200080389
2020-03-12

METHOD AND APPARATUS FOR CONNECTING WELL EQUIPMENT

#58
20200048969
2020-02-13

Tubular Locking Ring

#59
20200040668
2020-02-06

Dual pipe drill head quick interchange joint

#60
20190323638
2019-10-24

Anti-rotation device for connector assembly

#61
20190257158
2019-08-22

Orienting sub

#62
20190136641
2019-05-09

Telescopic drill rod

#63
20190024721
2019-01-24

Combined multi-coupler for top drive

#64
20190010766
2019-01-10

Bottom hole assemblies

#65
20190003265
2019-01-03

Manual pipe valve connector for jointed pipe connections with quick release check valve assembly and uses thereof

#66
20180363388
2018-12-20

Combined multi-coupler with locking clamp connection for top drive

#67
20180363386
2018-12-20

Combined multi-coupler for top drive

#68
20180334861
2018-11-22

Self-locking coupler

#69
20180292037
2018-10-11

Connection apparatus for telescopic joint

#70
20180266193
2018-09-20

Device arranged for attaching a pipe stem on a tubular body

#71
20180252055
2018-09-06

Method for upgrading a connector assembling two riser pipe sections by means of a dismountable locking collar

#72
20180238120
2018-08-23

HIGH-TENSILE, THIN-WALL DIFFERENTIAL THREADED COUPLING

#73
20180231155
2018-08-16

Vertical ratcheting anti-rotation device

#74
20180230758
2018-08-16

Radial ratchet dog anti-rotation device

#75
20180230757
2018-08-16

Set Screw Anti-Rotation Device with Knurl Surface

#76
20180179829
2018-06-28

Connector assembly for a mineral extraction system

#77
20180171724
2018-06-21

Running tool lock mechanism

#78
20180148985
2018-05-31

Horizontal directional drill pipe drive connection with locking feature

#79
20180112470
2018-04-26

Locking bit retention system

#80
20180106116
2018-04-19

Rotary locking sub for angular alignment of downhole sensors with high side in directional drilling

#81
20180058167
2018-03-01

Apparatus, systems, and methods for a rotatable hanger assembly

#82
20180045005
2018-02-15

Hydraulic disconnect tool

#83
20180030789
2018-02-01

Connecting assembly and receptacle adapted to receive said connecting assembly for connecting two tubing sections, and method for installing and connecting two tubing sections in a wellbore

#84
20170370160
2017-12-28

Protector with a flexible gasket for the male or female end of a component of a threaded tubular connection

#85
20170350199
2017-12-07

Thread form for connector collar of offshore well riser pipe

#86
20170343046
2017-11-30

Motor shaft transmission interference apparatus

#87
20170328139
2017-11-16

Anti-rotation device for connector assembly and method

#88
20170328138
2017-11-16

Drop in anti-rotation key

#89
20170306707
2017-10-26

Friction based thread lock for high torque carrying connections

#90
20170268298
2017-09-21

Interlock pipe connection

#91
20170198843
2017-07-13

Manual pipe valve connector for jointed pipe connections with quick release check valve assembly and uses thereof

#92
20170183943
2017-06-29

Apparatus and method for securing end pieces to a mandrel

#93
20170167203
2017-06-15

Oilfield tubular connection system and method

#94
20170122042
2017-05-04

Running tool locking system and method

#95
20170108151
2017-04-20

Threaded joint for steel pipes

#96
20170101828
2017-04-13

Pre-installed anti-rotation key for threaded connectors

#97
20170059063
2017-03-02

Threaded joint

#98
20170044842
2017-02-16

Drill string sections with interchangeable couplings

#99
20170030148
2017-02-02

Locking nut with a directional coupling mechanism

#100
20160369920
2016-12-22

Anti-rotation key for threaded connectors

#101
20160362943
2016-12-15

DRILL STRING COMPONENT COUPLING DEVICE

#102
20160356407
2016-12-08

Anti-rotation device for connector assembly

#103
20160356097
2016-12-08

Cam-style anti-rotation device for connector assembly

#104
20160356096
2016-12-08

Anti-rotation key for connector assembly

#105
20160327191
2016-11-10

Breech lock coupling

#106
20160230478
2016-08-11

Quick connect for wellbore tubulars

#107
20160195203
2016-07-07

Pipe coupling

#108
20160186899
2016-06-30

TUBULAR CONNECTION WITH SELF-LOCKING THREAD FORM USED IN THE OIL INDUSTRY

#109
20160177635
2016-06-23

Coupling mounted spin-through rod centralizer

#110
20160102505
2016-04-14

Downhole tool connection assembly and method

#111
20160084016
2016-03-24

Horizontal directional drill pipe drive connection with locking feature

#112
20160084015
2016-03-24

Pipe coupling

#113
20160076316
2016-03-17

Anti-rotation device for pipe string

#114
20160047502
2016-02-18

Quick connection arrangements with locking mechanisms

#115
20150323109
2015-11-12

Drill Pipe Connector and Method

#116
20150322734
2015-11-12

Orienting hanger assembly for deploying MWD tools

#117
20150315899
2015-11-05

Apparatus for angular alignment of downhole sensors with high side in directional drilling

#118
20150300098
2015-10-22

Rotary locking sub for angular alignment of downhole sensors with high side in directional drilling

#119
20150226016
2015-08-13

Core barrel and related drilling apparatus and method

#120
20150129307
2015-05-14

Method and apparatus for protecting downhole components from shock and vibration

#121
20150122548
2015-05-07

Method and system for directional drilling and coupling sub

#122
20150107857
2015-04-23

Apparatus and methods for setting slips on a tubular member

#123
20150101804
2015-04-16

Screen communication sleeve assembly and method

#124
20150096764
2015-04-09

Interlock pipe connection

#125
20150096759
2015-04-09

Connector, diverter, and annular blowout preventer for use within a mineral extraction system

#126
20150074979
2015-03-19

Magnetic frame and guide for anti-rotation key installation

#127
20150050083
2015-02-19

LOCKING RING WITH STABILIZING BLADES

#128
20150050076
2015-02-19

LOCKING RING WITH TAPERED RECESSES

#129
20150027738
2015-01-29

Method and system for one-trip hanger installation

#130
20140374122
2014-12-25

Hammerless Flow Coupler and Method of Use

#131
20140353963
2014-12-04

Telescoping pipe connector

#132
20140232109
2014-08-21

Connection assembly

#133
20140167408
2014-06-19

Ratcheting anti-rotation lock for threaded connectors

#134
20140125053
2014-05-08

Broach style anti rotation device for connectors

#135
20140103645
2014-04-17

Anti-rotation system for box and pin connection

#136
20140103640
2014-04-17

Threaded connector locking device

#137
20140050522
2014-02-20

Horizontal directional drill pipe drive connection with locking feature

#138
20130228379
2013-09-05

Continuous rotary drilling system and method of use

#139
20130228343
2013-09-05

Methods for installing shoulder rings in threaded pipe couplings

#140
20130164081
2013-06-27

Connection mechanism

#141
20130146305
2013-06-13

Drill pipe connector and method

#142
20130140813
2013-06-06

Slide actuating tubular connector

#143
20130105143
2013-05-02

Segmented seal ring and support of same

#144
20130093185
2013-04-18

Threaded connection and process for obtaining it

#145
20120306196
2012-12-06

ANTI-BACK OFF DEVICE FOR DOWN HOLE TOOLS AND DRIVE SYSTEMS

#146
20120273279
2012-11-01

Core Barrel and Related Drilling Apparatus and Method

#147
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

#148
20110260445
2011-10-27

Cam style anti-rotation key for tubular connections

#149
20110226490
2011-09-22

Method and system for one-trip hanger installation

#150
20110147009
2011-06-23

Drill Pipe Connector and Method

#151
20110123292
2011-05-26

Thread retention for an earth boring device

#152
20110073325
2011-03-31

TORQUE RESISTANT COUPLING FOR OILWELL TOOLSTRING

#153
20110037257
2011-02-17

Breech lock coupling

#154
20100032166
2010-02-11

Shoulder ring with axial retention

#155
20100012379
2010-01-21

Joint for use in back reaming

#156
20100005643
2010-01-14

Method of coupling expandable tubing sections

#157
20090280912
2009-11-12

Coupling device for connection and disconnection of bottom-hole equipment

#158
20090033092
2009-02-05

Threaded tubular connection

#159
20080245573
2008-10-09

Thread retention for an earth boring device

#160
20080012320
2008-01-17

Tubing connection arrangement

#161
20070063513
2007-03-22

Threaded tubular connection having interlocking tubular end structures

#162
20070057508
2007-03-15

Expansion activated anti-rotation device

#163
20070001457
2007-01-04

Locking device for built pipe connections

#164
20060267342
2006-11-30

Tubular connection and method

#165
20060078372
2006-04-13

Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine

#166
18137738
2025-06-03

Systems and apparatus for orienting one or more tools in a tool string and methods of manufacture, assembly and use thereof

#167
15453571
2018-06-12

Method and apparatus for efficient bi-rotational drilling