Patents-Review.com
ClassID:

135316 ⎘

E21B17/1021 - 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; Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs

Sub-classes:
Recent Application in this class:
#1
20250179907
2025-06-05

DEVICE FOR CENTERING A SENSOR ASSEMBLY IN A BORE

 #2
20240392640
2024-11-28

DOWNHOLE RADIAL FORCE TOOL ASSEMBLY

 #3
20240301784
2024-09-12

Open hole washout mapping and steering tool

 #4
20240229570
2024-07-11

DEVICE FOR CENTERING A SENSOR ASSEMBLY IN A BORE

 #5
20240183230
2024-06-06

Expandable Drill Pipe Centralizer/Stabilizer

 #6
20240141735
2024-05-02

Device for centering a sensor assembly in a bore

 #7
20240068305
2024-02-29

Expandable drill pipe centralizer/stabilizer

 #8
20230358118
2023-11-09

Wellbore protector ram

 #9
20230349255
2023-11-02

Downhole tool

 #10
20230323741
2023-10-12

Device for centering a sensor assembly in a bore

 #11
20230243220
2023-08-03

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

 #12
20230194388
2023-06-22

Core detection device of coring instrument and spacer insertion device

 #13
20230112571
2023-04-13

DAMPING VIBRATION IN COILED TUBING

 #14
20220298870
2022-09-22

Device for centering a sensor assembly in a bore

 #15
20220275691
2022-09-01

Artificial lift systems utilizing high speed centralizers

 #16
20220275690
2022-09-01

High speed rotor dynamics centralizer

 #17
20220251910
2022-08-11

ADVANCED STABILIZING SYSTEM FOR DEEP DRILLING

 #18
20220228447
2022-07-21

Production logging tool and downhole fluid analysis sensors vertical deploying method

 #19
20220186563
2022-06-16

Mechanical rotary steering drilling tool

 #20
20220178222
2022-06-09

EXPANDING METAL FOR PLUG AND ABANDONMENT

 #21
20220075088
2022-03-10

Passive arm for bi-directional well logging instrument

 #22
20220018246
2022-01-20

Method for communicating electrical signals in a well

 #23
20210388697
2021-12-16

Modular anti-rotation drilling systems and methods

 #24
20210381322
2021-12-09

Hydraulically powered centralizer device for borehole and method

 #25
20210332649
2021-10-28

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

 #26
20210324696
2021-10-21

Multi-string section mill

 #27
20210324682
2021-10-21

Rotary steerable tool with dump valve

 #28
20210285849
2021-09-16

Core detection device of coring instrument

 #29
20210262324
2021-08-26

Well perforating using electrical discharge machining

 #30
20210254415
2021-08-19

Rotary steerable drilling system with active stabilizer

 #31
20210238993
2021-08-05

Deployable electrical contact device

 #32
20210108703
2021-04-15

RESTRICTION FOR A VIBRATION DAMPER

 #33
20210102429
2021-04-08

Centralizer for wireline tool

 #34
20210079739
2021-03-18

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

 #35
20210062639
2021-03-04

PULSED POWER SCULPTING METHODS

 #36
20210048382
2021-02-18

Apparatus and method for testing rock heterogeneity

 #37
20200408074
2020-12-31

Perforating device for horizontal wells

 #38
20200408051
2020-12-31

Drilling tool with thread profile

 #39
20200370566
2020-11-26

Submersible pump support rod stabilizing device

 #40
20200362645
2020-11-19

Production logging tool and downhole fluid analysis probes deploying method

 #41
20200355034
2020-11-12

Sampling-by-pushing system and setting method thereof

 #42
20200340308
2020-10-29

Guide device

 #43
20200291771
2020-09-17

Compressing ultrasound data in a downhole tool

 #44
20200284115
2020-09-10

Downhole tool

 #45
20200277827
2020-09-03

Method and system for extended reach coiled tubing

 #46
20200271817
2020-08-27

Radial magnetic dipole dielectric tool

 #47
20200263500
2020-08-20

Anti-rotating device of non-rotating sleeve and a rotary guiding device

 #48
20200209193
2020-07-02

Systems and methods for obtaining downhole fluid properties

 #49
20200208514
2020-07-02

SYSTEMS AND METHODS FOR OBTAINING DOWNHOLE FLUID PROPERTIES

 #50
20200165891
2020-05-28

Systems and methods for pipe concentricity, zonal isolation, and stuck pipe prevention

 #51
20200040679
2020-02-06

Systems and methods for manipulating wellbore completion products

 #52
20200033494
2020-01-30

THROUGH TUBING CEMENT EVALUATION USING SEISMIC METHODS

 #53
20200024913
2020-01-23

ROTARY STEERABLE DRILLING SYSTEM WITH ACTIVE STABILIZER

 #54
20190383108
2019-12-19

Downhole centralizer

 #55
20190316433
2019-10-17

System for the operational and performance efficiency improvement of wireline tractors

 #56
20190292897
2019-09-26

Supporting a string within a wellbore with a smart stabilizer

 #57
20190292896
2019-09-26

Opening a wellbore with a smart hole-opener

 #58
20190292855
2019-09-26

Downhole force generating tool

 #59
20190277102
2019-09-12

Downhole tools and methods of controlling downhole tools

 #60
20190265199
2019-08-29

Method and system of evaluating cement bonds through tubing

 #61
20190169943
2019-06-06

Composite bow centralizer

 #62
20190010780
2019-01-10

Bridge plugs

 #63
20190003303
2019-01-03

Downhole local solid particles counting probe, production logging tool comprising the same and sand entry investigation method for hydrocarbon wells

 #64
20180363449
2018-12-20

Sensor bracket positioned on a movable arm system and method

 #65
20180363448
2018-12-20

Sensor deployment system and method using a movable arm with a telescoping section

 #66
20180363447
2018-12-20

Sensor deployment using a movable arm system and method

 #67
20180347345
2018-12-06

Downhole system having tubular with signal conductor and method

 #68
20180298699
2018-10-18

Energized Downhole Standoff

 #69
20180238146
2018-08-23

Caliper steerable tool for lateral sensing and accessing

 #70
20180223655
2018-08-09

Inductive cavity sensors for resistivity tools

 #71
20180172418
2018-06-21

Caliper tool with positive pivoting arm

 #72
20180100363
2018-04-12

DOWNHOLE TOOLS AND METHODS OF CONTROLLING DOWNHOLE TOOLS

 #73
20180100354
2018-04-12

Method of using a downhole force generating tool

 #74
20180038166
2018-02-08

Downhole force generating tool

 #75
20180010407
2018-01-11

Downhole activation of seismic tools

 #76
20180003850
2018-01-04

Downhole sensor deployment assembly

 #77
20180003027
2018-01-04

Production logging tool and downhole fluid analysis probes deploying method, in particular for deviated and horizontal hydrocarbon well

 #78
20170356263
2017-12-14

Apparatus and method for inner casing string window milling and outer casing cement sheath removal

 #79
20170314387
2017-11-02

Apparatus and Method of Conductivity and Permeability Based on Pulsed Eddy Current

 #80
20170275957
2017-09-28

Stabilizing system for deep drilling

 #81
20170234082
2017-08-17

Centralizer device and method for deployment of a bore hole component in a borehole

 #82
20170114631
2017-04-27

Downhole zonal isolation detection system having conductor and method

 #83
20170030157
2017-02-02

Multifunction wellbore tubular penetration tool

 #84
20170030150
2017-02-02

Composite bow centralizer

 #85
20170010380
2017-01-12

Ultra-slim nuclear magnetic resonance tool for oil well logging

 #86
20170010379
2017-01-12

Ultra-slim nuclear magnetic resonance tool for oil well logging

 #87
20160319633
2016-11-03

Methods of deployment for eutectic isolation tools to ensure wellbore plugs

 #88
20160290047
2016-10-06

Downhole tools and methods of controlling downhole tools

 #89
20160281450
2016-09-29

Gripper assembly for downhole tools

 #90
20160258230
2016-09-08

Centralizer with collaborative spring force

 #91
20160237763
2016-08-18

Method of centralising tubing in a wellbore

 #92
20160201406
2016-07-14

Centraliser

 #93
20160186512
2016-06-30

Logging tool

 #94
20160130935
2016-05-12

Production logging tool with multi-sensor array

 #95
20160053612
2016-02-25

Downhole formation testing and sampling apparatus having a deployment linkage assembly

 #96
20160010401
2016-01-14

Coring tools exhibiting reduced rotational eccentricity and related methods

 #97
20150376967
2015-12-31

Gripper assembly for downhole tools

 #98
20150368990
2015-12-24

Centralizer with collaborative spring force

 #99
20150354303
2015-12-10

Method of using a downhole force generating tool

 #100
20150354282
2015-12-10

Downhole force generating tool

 #101
20150354281
2015-12-10

Downhole force generating tool

 #102
20150337602
2015-11-26

Method of using a downhole force generating tool

 #103
20150284958
2015-10-08

Rebar centralizer

 #104
20150152704
2015-06-04

Method and apparatus for string access or passage through the deformed and dissimilar contiguous walls of a wellbore

 #105
20150144329
2015-05-28

Downhole force generating tool

 #106
20150122509
2015-05-07

Centraliser

 #107
20150096753
2015-04-09

Casing cutting tool, with stabilizing structure

 #108
20150083406
2015-03-26

Force Monitoring Tractor

 #109
20150054503
2015-02-26

Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers

 #110
20150034336
2015-02-05

Centralizer

 #111
20150000987
2015-01-01

Extendable and retractable stabilizer

 #112
20140352422
2014-12-04

Sensor pod housing assembly and apparatus

 #113
20140345853
2014-11-27

Composite bow centralizer

 #114
20140338893
2014-11-20

Composite bow centralizer

 #115
20140246210
2014-09-04

Remotely actuated clamping devices for borehole seismic sensing systems and methods of operating the same

 #116
20140138084
2014-05-22

Caliper steerable tool for lateral sensing and accessing

 #117
20140014370
2014-01-16

Centraliser

 #118
20140014322
2014-01-16

Fail-safe spring

 #119
20140014315
2014-01-16

Modular downhole tool

 #120
20130104641
2013-05-02

Apparatus and methods for orienting, stabilizing, or stably operating a logging tool

 #121
20130043032
2013-02-21

Valve for a downhole tool

 #122
20120239345
2012-09-20

Self centering bore measurement unit

 #123
20120205093
2012-08-16

Instrument for Centering Tools Within a Wellbore

 #124
20120192640
2012-08-02

Borehole Imaging and Formation Evaluation While Drilling

 #125
20120186808
2012-07-26

Composite bow centralizer

 #126
20120131996
2012-05-31

Method and apparatus for logging a wellbore

 #127
20120061074
2012-03-15

Gripper assembly for downhole tools

 #128
20120048542
2012-03-01

Anti-locking device for use with an arm system for logging a wellbore and method for using same

 #129
20120048541
2012-03-01

Arm system for logging a wellbore and method for using same

 #130
20120006109
2012-01-12

Borehole sensing and clamping systems and methods of using the same

 #131
20110226468
2011-09-22

Offset joint for downhole tools

 #132
20110220416
2011-09-15

Centralized Bi-Center Reamer and Method of Use

 #133
20110168388
2011-07-14

Borehole casing centraliser

 #134
20110138903
2011-06-16

Folding ultrasonic borehole imaging tool

 #135
20110120777
2011-05-26

Expandable downhole tool

 #136
20110079385
2011-04-07

CENTRALISER SEGMENT AND CENTRALISER

 #137
20110048702
2011-03-03

Interleaved arm system for logging a wellbore and method for using same

 #138
20110042106
2011-02-24

Centraliser

 #139
20110030945
2011-02-10

Centralizer apparatus

 #140
20110005776
2011-01-13

Centraliser

 #141
20100212887
2010-08-26

Gripper assembly for downhole tools

 #142
20100096143
2010-04-22

Method for installing wellbore string devices

 #143
20100018696
2010-01-28

Downhole tool

 #144
20100018695
2010-01-28

Gripper assembly for downhole tools

 #145
20090236101
2009-09-24

Force monitoring tractor

 #146
20090159269
2009-06-25

Self-anchoring device with force amplification

 #147
20090008086
2009-01-08

Centering structure for tubular member and method of making same

 #148
20080277573
2008-11-13

Sensing tool

 #149
20080236897
2008-10-02

Expandable downhole tool

 #150
20080190624
2008-08-14

Method for Drilling Oil and Gas Wells

 #151
20080156535
2008-07-03

Wellbore treatment apparatus and method

 #152
20080078559
2008-04-03

Gripper assembly for downhole tools

 #153
20070227736
2007-10-04

System and method for unsticking a tool stuck in a wellbore

 #154
20070181298
2007-08-09

Self-anchoring device with force amplification

 #155
20070034370
2007-02-15

Downhole tool

 #156
20070017670
2007-01-25

Gripper assembly for downhole tools

 #157
20060272808
2006-12-07

Rotary pump stabilizer

 #158
20060201716
2006-09-14

Gripper assembly for downhole tools

 #159
20060185902
2006-08-24

Spring mechanism for downhole steering tool blades

 #160
20060180318
2006-08-17

Constant force actuator

 #161
20060107736
2006-05-25

Measuring sonde for a hydrocarbon well

 #162
20050279498
2005-12-22

Apparatus and methods for positioning in a borehole

 #163
20050082055
2005-04-21

Gripper assembly for downhole tools

 #164
19373975
2026-04-21

Device for centering a sensor assembly in a bore

 #165
18635909
2025-04-22

Apparatus and method for in-situ monitoring of hydrogen levels at a subsurface location

 #166
18509497
2024-10-15

Device for centering a sensor assembly in a bore

 #167
17934381
2023-08-01

Device for centering a sensor assembly in a bore

 #168
17707042
2023-05-16

High expansion anti-rotation anchor catcher

 #169
17541078
2022-07-12

Multi-string section mill

 #170
17138228
2022-05-03

Phase transformation material delivery and deployment chassis for openhole isolation

 #171
15441058
2019-07-09

Deployable centralizers

 #172
14587509
2015-11-10

Method and apparatus for increasing load bearing capacity of a tubular string