ClassID:

135321

E21B17/1057 - CPC Classification

Classification description:

Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings Cables; ; Tubings; Wear protectors; Centralising devices, e.g. stabilisers Centralising devices with rollers or with a relatively rotating sleeve

Sub-classes:
Recent Application in this class:
#1
20250334133
2025-10-30

BEARING ASSEMBLIES, APPARATUSES, DEVICES, SYSTEMS, AND METHODS INCLUDINGBEARINGS

#2
20250263994
2025-08-21

SENSOR TRANSPORTATION APPARATUS FOR A WIRELINE LOGGING TOOL STRING

#3
20250207467
2025-06-26

TETHER ROLLER APPARATUS

#4
20250137355
2025-05-01

WELLBORE CLEANING TOOLS

#5
20250027372
2025-01-23

A TOOL STRING TRANSPORTATION DEVICE

#6
20250003298
2025-01-02

RETRIEVABLE DOWNHOLE HEATER

#7
20240344413
2024-10-17

A WELL TOOL WITH AN ANGLE ORIENTING FEATURE

#8
20240271492
2024-08-15

Remote control line clamp installation system

#9
20240229827
2024-07-11

DOWNHOLE CENTRIFUGAL PUMPS INCLUDING LOCKING FEATURES AND RELATED COMPONENTS AND METHODS

#10
20240229570
2024-07-11

DEVICE FOR CENTERING A SENSOR ASSEMBLY IN A BORE

#11
20240191583
2024-06-13

ROTATIONAL GUIDANCE DEVICE FOR A DRILLING TOOL AND ASSOCIATED METHOD

#12
20240084657
2024-03-14

Sensor transportation apparatus for a wireline logging tool string

#13
20240068308
2024-02-29

FULL-FACE SHAFT TUNNEL BORING MACHINE SYSTEM

#14
20240003200
2024-01-04

SELF-ORIENTING PERFORATING GUN

#15
20230358338
2023-11-09

GUIDE SLEEVE FOR A FLEXIBLE LINEAR MEMBER AND KITS THEREOF

#16
20230358106
2023-11-09

PROTECTIVE ROLLER CENTRALIZER

#17
20230323741
2023-10-12

Device for centering a sensor assembly in a bore

#18
20230243220
2023-08-03

Adaptive control of rotating or non-rotating transducer and sensors casing stand-off supported by casing centralizers

#19
20230212927
2023-07-06

Perforating Gun With Self-Orienting Perforating Charges

#20
20230091111
2023-03-23

Spacer segment and a spacer

#21
20230008162
2023-01-12

Wheel Assembly

#22
20220412173
2022-12-29

Tool string orientation

#23
20220389774
2022-12-08

Drill string with centralizer

#24
20220298879
2022-09-22

Sensor transportation apparatus for a wireline logging tool string

#25
20220298870
2022-09-22

Device for centering a sensor assembly in a bore

#26
20220275692
2022-09-01

Maintaining and inspecting a wellbore

#27
20220275691
2022-09-01

Artificial lift systems utilizing high speed centralizers

#28
20220275690
2022-09-01

High speed rotor dynamics centralizer

#29
20220136368
2022-05-05

Indexing tool system for a resource exploration and recovery system

#30
20220127920
2022-04-28

Wireline cased-hole roller

#31
20220065050
2022-03-03

Downhole movable joint tool

#32
20220056764
2022-02-24

Hybrid reamer and stabilizer

#33
20220034174
2022-02-03

Self-powered active vibration and rotational speed sensors

#34
20220018194
2022-01-20

Low friction wireline standoff

#35
20210388697
2021-12-16

Modular anti-rotation drilling systems and methods

#36
20210332649
2021-10-28

In-pipe passive centering mechanism with radial probe or tool deployment mechanism

#37
20210301597
2021-09-30

Deploying material to limit losses of drilling fluid in a wellbore

#38
20210293096
2021-09-23

CENTRALIZER

#39
20210277725
2021-09-09

Wheel assembly

#40
20210198963
2021-07-01

Sensor transportation apparatus and guide device

#41
20210140253
2021-05-13

Pipeline pulling tool and a method of actuating such a tool

#42
20210131196
2021-05-06

Casing friction reduction methods and tool

#43
20210102429
2021-04-08

Centralizer for wireline tool

#44
20210079739
2021-03-18

In-pipe passive centering mechanism with radial probe or tool deployment mechanism

#45
20210032942
2021-02-04

Downhole friction reduction tools

#46
20210025247
2021-01-28

Roller coupling apparatus and method therefor

#47
20210025246
2021-01-28

Roller coupling apparatus and method therefor

#48
20210002967
2021-01-07

DOWNHOLE ROLLER

#49
20210002966
2021-01-07

Roller tool

#50
20200407620
2020-12-31

Method and materials to convert a drilling mud into a solid gel based lost circulation material

#51
20200362645
2020-11-19

Production logging tool and downhole fluid analysis probes deploying method

#52
20200332606
2020-10-22

DEVICE FOR CENTRING AND/OR PULLING A TOOL IN A PIPELINE

#53
20200332605
2020-10-22

Low friction wireline standoff

#54
20200277827
2020-09-03

Method and system for extended reach coiled tubing

#55
20200256162
2020-08-13

Downhole device for use in a well

#56
20200208481
2020-07-02

Orientation apparatus and hole finder device for a wireline logging tool string

#57
20200208474
2020-07-02

Systems and methods for improved centralization and friction reduction using casing rods

#58
20200208037
2020-07-02

Method and materials to convert a drilling mud into a solid gel based lost circulation material

#59
20200165881
2020-05-28

Centralising assembly for a downhole device, coupling device including a centralising device and method of manufacture

#60
20200157886
2020-05-21

Pulling tool for use in a wellbore and/or tubing and a propulsion module of a pulling tool

#61
20200080385
2020-03-12

Securing mechanism for a drilling element on a downhole drilling tool

#62
20200003013
2020-01-02

Rolling element assembly with bearings elements

#63
20190264548
2019-08-29

Rotating loading tube and angled shaped charges for oriented perforating

#64
20190242199
2019-08-08

Casing friction reduction methods and tool

#65
20190242188
2019-08-08

Anti-rotation pads with flow ports

#66
20190226318
2019-07-25

Apparatus and method for hybrid sonic transmitter integrated with centralizer for cement bond log cased-hole application

#67
20190169950
2019-06-06

Systems and methods for stuck pipe mitigation

#68
20190145174
2019-05-16

Drilling system including a driveshaft/housing lock

#69
20190106947
2019-04-11

Sucker rod rolling centralizer guide

#70
20190071936
2019-03-07

Centralizer

#71
20180363423
2018-12-20

Tool string orientation

#72
20180355677
2018-12-13

Low friction wireline standoff

#73
20180328131
2018-11-15

Wellbore logging tool assembly

#74
20180195351
2018-07-12

Securing mechanism for a drilling element on a downhole drilling tool

#75
20180181700
2018-06-28

Downhole toolstring spacer placement systems and methods

#76
20180156000
2018-06-07

Positioning system

#77
20180135359
2018-05-17

Tool string orientation

#78
20180119498
2018-05-03

Connection mechanism

#79
20180087337
2018-03-29

Sensor transportation apparatus and guide device

#80
20170292371
2017-10-12

Optical coupling system for downhole rotation variant housing

#81
20170218708
2017-08-03

Drill pipe completion device

#82
20170130576
2017-05-11

Dimensional characteristic determinations of a wellbore

#83
20170130543
2017-05-11

Detecting and remediating downhole excessive pressure condition

#84
20170074055
2017-03-16

Centralizer

#85
20170067299
2017-03-09

Downhole roller

#86
20170030164
2017-02-02

Apparatus and method for cleaning wells and pipelines

#87
20170010380
2017-01-12

Ultra-slim nuclear magnetic resonance tool for oil well logging

#88
20170010379
2017-01-12

Ultra-slim nuclear magnetic resonance tool for oil well logging

#89
20160305197
2016-10-20

Methods and apparatus for mitigating downhole torsional vibration

#90
20160265337
2016-09-15

Nanofiber strain gauge sensors in downhole tools

#91
20160201434
2016-07-14

MODULAR DRILLING REAMER

#92
20160160578
2016-06-09

DOWNHOLE EXPANDABLE DRIVE REAMER APPARATUS

#93
20160130886
2016-05-12

Downhole apparatus and method

#94
20160108684
2016-04-21

Low friction wireline standoff

#95
20160090817
2016-03-31

Transportable Energy Storage Devices

#96
20160060972
2016-03-03

DRILL PIPE WITH ROLLER ASSEMBLY

#97
20150361731
2015-12-17

Roller device

#98
20150308207
2015-10-29

Sensor transportation apparatus and guide device

#99
20150259989
2015-09-17

Methods and apparatus for mitigating downhole torsional vibration

#100
20150252629
2015-09-10

STABILIZER DEVICE FOR BOTTOM HOLE ASSEMBLY

#101
20150167402
2015-06-18

Downhole tool vibration device and method

#102
20150152699
2015-06-04

Tubular guiding and gripping apparatus and method

#103
20150144327
2015-05-28

Torque anchor for blocking the rotation of a production string of a well

#104
20150129309
2015-05-14

Downhole stabilizer

#105
20150114618
2015-04-30

OVERVOLTAGE FASTENING TOOL

#106
20150090459
2015-04-02

Apparatus and Methods for Clearing a Subsea Tubular

#107
20150083437
2015-03-26

Method and apparatus to enable toolstring to negotiate obstructions downhole

#108
20150047829
2015-02-19

Torque anchor for blocking the rotation of a production string of a well and pumping installation equipped with such a torque anchor

#109
20150027729
2015-01-29

Wireline roller standoff

#110
20140318869
2014-10-30

Methods and systems for controlling torque transfer from rotating equipment

#111
20140262216
2014-09-18

Friction reducing downhole assemblies

#112
20140246242
2014-09-04

Components of drilling assemblies, drilling assemblies, and methods of stabilizing drilling assemblies in wellbores in subterranean formations

#113
20140158432
2014-06-12

Downhole traction apparatus and assembly

#114
20140014366
2014-01-16

Downhole driving unit having a hydraulic motor with a static cam ring

#115
20130333949
2013-12-19

DOWNHOLE TRACTION

#116
20130319684
2013-12-05

FRICTION REDUCING STABILIZER

#117
20130312978
2013-11-28

Self-adjusting riser centralizer

#118
20130299188
2013-11-14

Well access tools

#119
20130292183
2013-11-07

Centralizer

#120
20130255964
2013-10-03

Friction reduction mechanism for a downhole release assembly

#121
20130248208
2013-09-26

Downhole Tool Roller Device With Cylindrical Bearing Mechanism

#122
20130175050
2013-07-11

METHOD AND APPARATUS FOR REDUCING STICK-SLIP IN DRILLING OPERATIONS

#123
20130105156
2013-05-02

Artificial lift system for well production

#124
20120255744
2012-10-11

Roller standoff assemblies

#125
20120152523
2012-06-21

Self-orienting fracturing sleeve and system

#126
20120145380
2012-06-14

Alignment of downhole strings

#127
20120073803
2012-03-29

DUAL ROTARY CENTRALIZER FOR A BOREHOLE

#128
20120061098
2012-03-15

Downhole device

#129
20120048541
2012-03-01

Arm system for logging a wellbore and method for using same

#130
20120031609
2012-02-09

Low friction wireline standoff

#131
20110220416
2011-09-15

Centralized Bi-Center Reamer and Method of Use

#132
20110114338
2011-05-19

Non-rotating casing centralizer

#133
20110114307
2011-05-19

Open hole non-rotating sleeve and assembly

#134
20100276138
2010-11-04

Low Friction Centralizer

#135
20100270033
2010-10-28

Tubular guiding and gripping apparatus and method

#136
20100181064
2010-07-22

Multi-Purpose Well Servicing Apparatus

#137
20100038068
2010-02-18

Centralizer-based survey and navigation device and method

#138
20090260802
2009-10-22

Centralizer for tubular elements

#139
20090166036
2009-07-02

Progressive cavity pump rod guide

#140
20090146381
2009-06-11

TURBULENT FLOW TOOL

#141
20090114451
2009-05-07

Apparatus for keeping a down hole drilling tool vertically aligned

#142
20090003974
2009-01-01

Transport assembly

#143
20080264639
2008-10-30

Method and apparatus for orienting perforating devices

#144
20080217063
2008-09-11

In-situ method of forming a non-rotating drill pipe protector assembly

#145
20080169107
2008-07-17

Apparatus and method for stabilization of downhole tools

#146
20080164018
2008-07-10

Downhole device

#147
20070215388
2007-09-20

Downhole Apparatus for Mobilising Drill Cuttings

#148
20070144783
2007-06-28

Rotating systems associated with drill pipe

#149
20060278405
2006-12-14

Method and apparatus for friction reduction in a downhole tool

#150
20060157278
2006-07-20

Centralizer-based survey and navigation device and method

#151
20050252655
2005-11-17

Roller subs

#152
20050199427
2005-09-15

Drilling on gauge sub

#153
20050194187
2005-09-08

Rotating systems associated with drill pipe

#154
20050150694
2005-07-14

Method and apparatus for preventing the friction induced rotation of non-rotating stabilizers

#155
20050098353
2005-05-12

Variable gauge drilling apparatus and method of assembly therefor

#156
20050034900
2005-02-17

Drill string tool with bearing sleeve

#157
18452641
2024-04-30

Tool string transportation device

#158
14736575
2016-11-01

Positioning a tubular member in a wellbore