ClassID:

135405

E21B2023/008 - CPC Classification

Classification description:

Recent Application in this class:
#1
20210277733
2021-09-09

Thrust driven tractor by fluid jetting

#2
20210131209
2021-05-06

Downhole device including a fluid propulsion system

#3
20210131208
2021-05-06

Method for reducing stick-slip logging tools

#4
20200399968
2020-12-24

Method for Synchronizing Downhole Tractor and Winch Deployment

#5
20200392803
2020-12-17

Autonomous through-tubular downhole shuttle

#6
20200284112
2020-09-10

System for configuring subterranean components

#7
20200284111
2020-09-10

Method of configuring subterranean components

#8
20200248548
2020-08-06

Systems and Methods for Monitoring Downhole Conditions

#9
20200248517
2020-08-06

Semi-autonomous downhole taxi with fiber optic communication

#10
20200232299
2020-07-23

Cement squeeze well tool

#11
20200217145
2020-07-09

Well logging assembly

#12
20200199957
2020-06-25

Self-propelling perforating gun system

#13
20200183040
2020-06-11

System and method for use in measuring a property of an environment in, or adjacent to, an elongated space

#14
20200181994
2020-06-11

Coiled tubing drilling robot, robot system and process parameter control method thereof

#15
20200165890
2020-05-28

Method of inserting a device in a subsea oil well, method of removing a device from a subsea oil well, and system for insertion and removal of a device in a subsea oil well

#16
20200157904
2020-05-21

AUTOMATIC DRILLER

#17
20200149390
2020-05-14

METHOD AND APPARATUS FOR PERFORMING A SURVEY OF TUBING WHICH IS STUCK IN A BOREHOLE, E.G. FOR DETERMINING A FREE POINT

#18
20200072006
2020-03-05

Systems and methods for holding wireline device against well

#19
20200024920
2020-01-23

Systems and methods for holding wireline device against well

#20
20200024915
2020-01-23

Propulsion unit for wellbore tractor tool

#21
20190368292
2019-12-05

Cement squeeze well tool

#22
20190368290
2019-12-05

Autonomous tractor using counter flow-driven propulsion

#23
20190345770
2019-11-14

Downhole tool assembly advancement through wellbore

#24
20190338598
2019-11-07

DRILLING DEVICE

#25
20190316433
2019-10-17

System for the operational and performance efficiency improvement of wireline tractors

#26
20190292855
2019-09-26

Downhole force generating tool

#27
20190277102
2019-09-12

Downhole tools and methods of controlling downhole tools

#28
20190219072
2019-07-18

Downhole tractor comprising two or more hydrualic supply lines

#29
20190218876
2019-07-18

DOWNHOLE TOOL STRING

#30
20190195049
2019-06-27

SYSTEM AND METHOD FOR GUIDING A TUBULAR ALONG A BOREHOLE

#31
20190186221
2019-06-20

OFFSHORE COILED TUBING SYSTEM

#32
20190186213
2019-06-20

OFFSHORE COILED TUBING SYSTEM

#33
20190178433
2019-06-13

MAINTENANCE OF DRILLING RISERS

#34
20190178036
2019-06-13

DOWNHOLE LASER SYSTEMS, APPARATUS AND METHODS OF USE

#35
20190169975
2019-06-06

Ring assembly for measurement while drilling, logging while drilling and well intervention

#36
20190169954
2019-06-06

Light and buoyant retrievable assembly—wellbore tool and method

#37
20190169942
2019-06-06

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

#38
20190055801
2019-02-21

Traversing across a wash-out zone in a wellbore

#39
20190048976
2019-02-14

Well tractor drive section with pairs of drive arm bearings mutually oppositely displaced from the centre line

#40
20190040700
2019-02-07

Dowhole tractor comprising a hydraulic supply line for actuating hydraulic components

#41
20190040698
2019-02-07

Slick line, fiber optic cable or tubing wellbore pulling tool and propulsion module

#42
20190032406
2019-01-31

Steerable borehole excavation apparatus

#43
20190032405
2019-01-31

Guidance system for a downhole boring device

#44
20190024469
2019-01-24

FLEXIBLE DISPLAY APPARATUS AND AN ENCAPSULATION METHOD THEREOF

#45
20180363397
2018-12-20

Arm deployment system and method

#46
20180328131
2018-11-15

Wellbore logging tool assembly

#47
20180298714
2018-10-18

Downhole tool member for hydrocarbon resource recovery

#48
20180216430
2018-08-02

Deployment of downhole sensing devices

#49
20180209258
2018-07-26

Method of forming lateral boreholes from a parent wellbore

#50
20180209231
2018-07-26

Downhole apparatus

#51
20180187504
2018-07-05

Method of removing equipment from a section of a wellbore and related apparatus

#52
20180179840
2018-06-28

Systems and methods for holding wireline device against well

#53
20180128083
2018-05-10

Hydraulically assisted deployed ESP system

#54
20180119503
2018-05-03

Apparatus for use in a tractor in a wellbore and methods

#55
20180119498
2018-05-03

Connection mechanism

#56
20180112486
2018-04-26

Well restimulation downhole assembly

#57
20180100363
2018-04-12

DOWNHOLE TOOLS AND METHODS OF CONTROLLING DOWNHOLE TOOLS

#58
20180100354
2018-04-12

Method of using a downhole force generating tool

#59
20180087337
2018-03-29

Sensor transportation apparatus and guide device

#60
20180038166
2018-02-08

Downhole force generating tool

#61
20180030797
2018-02-01

Downhole stroking tool

#62
20180023384
2018-01-25

Method and apparatus for stress mapping of pipelines and other tubulars

#63
20170370189
2017-12-28

Apparatus and methods for well intervention

#64
20170350237
2017-12-07

METHODS AND APPARTUS FOR REMOTE ACTUATION OF A DOWNHOLE DEVICE IN A WELLBORE

#65
20170328160
2017-11-16

Method for recovering tubular structures from a well and a downhole tool string

#66
20170314588
2017-11-02

Deployable compliant mechanism

#67
20170254182
2017-09-07

Propulsion generator and method

#68
20170248008
2017-08-31

Fiber optic magneto-responsive sensor assembly

#69
20170191327
2017-07-06

Wireline Tractor Comprising A Disc-Shaped Cutting Device for Perforating of A Tubing Wall and Method for Perforating a Tubing Wall

#70
20170159384
2017-06-08

Deviated/horizontal well propulsion for downhole devices

#71
20170145777
2017-05-25

Annular barrier completion with inductive system

#72
20170145760
2017-05-25

DYNAMICALLY AUTOMATED ADJUSTABLE DOWNHOLE CONVEYANCE TECHNIQUE FOR AN INTERVENTIONAL APPLICATION

#73
20170138150
2017-05-18

Repositionable Well Plug

#74
20170114636
2017-04-27

Dual function downhole tool

#75
20170016293
2017-01-19

Multi-run retrievable battery pack for electronic slickline tools

#76
20170016291
2017-01-19

Laser propelled tractor with laser operated logging tools

#77
20160362953
2016-12-15

Tractor traction control for cased hole

#78
20160333653
2016-11-17

Downhole tractor with redundant motor drives with independent circuit breakers

#79
20160326807
2016-11-10

Directional drilling while conveying a lining member, with latching parking capabilities for multiple trips

#80
20160319618
2016-11-03

Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall

#81
20160290047
2016-10-06

Downhole tools and methods of controlling downhole tools

#82
20160281450
2016-09-29

Gripper assembly for downhole tools

#83
20160251941
2016-09-01

Self-propelled device for use in a subterranean well

#84
20160215579
2016-07-28

System for performing an operation within an elongated space

#85
20160215564
2016-07-28

Drilling tool

#86
20160194939
2016-07-07

Hydraulically assisted deployed ESP system

#87
20160186497
2016-06-30

Electric motor for laser-mechanical drilling

#88
20160160619
2016-06-09

Downhole hydraulic Jetting Assembly

#89
20160160595
2016-06-09

Internal tractor system for downhole tubular body

#90
20160160568
2016-06-09

Steerable hydraulic jetting nozzle, and guidance system for downhole boring device

#91
20160153239
2016-06-02

Method of forming lateral boreholes from a parent wellbore

#92
20160129979
2016-05-12

Transformer in-situ inspection vehicle with a cage hull

#93
20160108696
2016-04-21

Member for hydrocarbon resource collection downhole tool

#94
20160069146
2016-03-10

Real-time extended-reach monitoring and optimization method for coiled tubing operations

#95
20160053540
2016-02-25

Drilling apparatus

#96
20160017694
2016-01-21

Propulsion generator and method

#97
20150354303
2015-12-10

Method of using a downhole force generating tool

#98
20150354301
2015-12-10

Electrodynamic and electromagnetic suspension system tractor

#99
20150354282
2015-12-10

Downhole force generating tool

#100
20150354281
2015-12-10

Downhole force generating tool

#101
20150337602
2015-11-26

Method of using a downhole force generating tool

#102
20150308207
2015-10-29

Sensor transportation apparatus and guide device

#103
20150300113
2015-10-22

Well runner

#104
20150218900
2015-08-06

DOWNHOLE TURBINE-DRIVEN SYSTEM

#105
20150167416
2015-06-18

Well tractor

#106
20150136424
2015-05-21

Remote controlled self propelled deployment system for horizontal wells

#107
20150136414
2015-05-21

Distributed lift systems for oil and gas extraction

#108
20150096741
2015-04-09

Member for hydrocarbon resource collection downhole tool

#109
20150083406
2015-03-26

Force Monitoring Tractor

#110
20150053425
2015-02-26

Feeding device for a downhole tool and method for axial feeding of a downhole tool

#111
20150047853
2015-02-19

System and methodology for mechanically releasing a running string

#112
20150047827
2015-02-19

Pump down tool

#113
20150041137
2015-02-12

Automatic driller

#114
20150021014
2015-01-22

Forward deployed sensing array for an electric submersible pump

#115
20150013997
2015-01-15

Downhole tool and method

#116
20140352950
2014-12-04

Method of controlling a downhole operation

#117
20140311755
2014-10-23

Apparatus for driving and maneuvering wireline logging tools in high-angled wells

#118
20140305653
2014-10-16

Method and system for an automatic milling operation

#119
20140238695
2014-08-28

Stroker device

#120
20140174760
2014-06-26

System and method for conveying

#121
20140166369
2014-06-19

Gripper assembly for downhole tools

#122
20140158432
2014-06-12

Downhole traction apparatus and assembly

#123
20140116779
2014-05-01

Application of downhole rotary tractor

#124
20140116729
2014-05-01

Wireline crawler tractor

#125
20140054031
2014-02-27

Method and system for well and reservoir management in open hole completions as well as method and system for producing crude oil

#126
20140014369
2014-01-16

Service panel

#127
20140014368
2014-01-16

Downhole driving unit having a hydraulic motor in a wheel

#128
20140014363
2014-01-16

Hydraulic assembly

#129
20140014323
2014-01-16

Torque member

#130
20140014322
2014-01-16

Fail-safe spring

#131
20140014315
2014-01-16

Modular downhole tool

#132
20140013731
2014-01-16

Arm assembly

#133
20130333970
2013-12-19

Remote controlled vehicle

#134
20130241741
2013-09-19

Downhole system having a wireless unit

#135
20130240197
2013-09-19

Wireless downhole unit

#136
20130186645
2013-07-25

Downhole robots and methods of using same

#137
20130160991
2013-06-27

Propulsion generator and method

#138
20130081876
2013-04-04

Optical power for self-propelled mineral mole

#139
20130068479
2013-03-21

Well tractor with active traction control

#140
20130025852
2013-01-31

Apparatus and system and method of measuring data in a well extending below surface

#141
20120313790
2012-12-13

Downhole apparatus

#142
20120292049
2012-11-22

Device and a system and a method of moving in a tubular channel

#143
20120277997
2012-11-01

Device and a system and a method of examining a tubular channel

#144
20120267168
2012-10-25

Electric motor for laser-mechanical drilling

#145
20120168176
2012-07-05

Downhole tool with roller screw assembly

#146
20110277990
2011-11-17

Anchoring systems for drilling tools

#147
20110147086
2011-06-23

Downhole tools with electro-mechanical and electro-hydraulic drives

#148
20110120771
2011-05-26

Gas cutting borehole drilling apparatus

#149
20090236101
2009-09-24

Force monitoring tractor

#150
20090218105
2009-09-03

Hydraulically driven tandem tractor assembly

#151
20080073077
2008-03-27

Coiled tubing tractor assembly

#152
15890890
2019-07-16

Cradle for retention, transportation and rotation of blowout preventer