ClassID:

135131

E21B4/02 - page 3 - CPC Classification

Classification description:

Drives for drilling, used in the borehole Fluid rotary type drives

Recent Application in this class:
#601
20150122549
2015-05-07

HYDRAULIC TOOLS, DRILLING SYSTEMS INCLUDING HYDRAULIC TOOLS, AND METHODS OF USING HYDRAULIC TOOLS

#602
20150114722
2015-04-30

DOWNHOLE SCREW MOTOR

#603
20150114721
2015-04-30

Downhole motor with concentric rotary drive system

#604
20150107907
2015-04-23

Systems and methods to reduce oscillations in magnetic couplings

#605
20150107904
2015-04-23

Systems and methods for producing forced axial vibration of a drillstring

#606
20150096809
2015-04-09

Combination mud motor flow diverter and tiled bearing, and bearing assemblies including same

#607
20150096807
2015-04-09

Anti-stall bypass system for downhole motor

#608
20150090497
2015-04-02

Directional Drilling Using Variable Bit Speed, Thrust, and Active Deflection

#609
20150083496
2015-03-26

Positionable downhole gear box

#610
20150078947
2015-03-19

Downhole motor stator and method of manufacture

#611
20150075871
2015-03-19

Drilling assembly with high-speed motor gear system

#612
20150068811
2015-03-12

Downhole motor with concentric rotary drive system

#613
20150068810
2015-03-12

Apparatus for preventing separation of downhole motor from drillstring

#614
20150060144
2015-03-05

TURBINE BLADE FOR TURBODRILLS

#615
20150060143
2015-03-05

Remotely controlled apparatus for downhole applications and methods of operation

#616
20150060141
2015-03-05

DOWNHOLE MOTOR SENSING ASSEMBLY AND METHOD OF USING SAME

#617
20150053485
2015-02-26

Wired or ported transmission shaft and universal joints for downhole drilling motor

#618
20150051004
2015-02-19

Systems and methods for increasing the life of downhole driveshaft assemblies

#619
20150027782
2015-01-29

Mud hydraulic top drive

#620
20150027708
2015-01-29

Apparatus and methods for performing downhole operations using a selectably operable motor

#621
20150021011
2015-01-22

Ball launcher for a tubing string

#622
20150017047
2015-01-15

Stators for downhole motors, methods for fabricating the same, and downhole motors incorporating the same

#623
20150014059
2015-01-15

CV joint for down hole motor and method

#624
20140360787
2014-12-11

Down hole motor apparatus and method

#625
20140353041
2014-12-04

CAM MECHANISM FOR DOWNHOLE ROTARY VALVE ACTUATION AND A METHOD FOR DRILLING

#626
20140332275
2014-11-13

Positive displacement motor with radially constrained rotor catch

#627
20140332272
2014-11-13

Insulated conductor for downhole drilling equipment and method

#628
20140326454
2014-11-06

Methods and apparatus for wellbore construction and completion

#629
20140318868
2014-10-30

Device and method for drilling with continuous tool rotation and continuous drilling fluid supply

#630
20140308149
2014-10-16

Long reach spindle drive systems and method

#631
20140299382
2014-10-09

Drive shaft assembly for a downhole motor

#632
20140262677
2014-09-18

Locking clutch for downhole motor

#633
20140262530
2014-09-18

Adjustable mud motor housing assembly

#634
20140262524
2014-09-18

Downhole turbine motor and related assemblies

#635
20140251695
2014-09-11

Adjustable bend assembly for a downhole motor

#636
20140251689
2014-09-11

Apparatus and method for controlling, measuring, and sampling a fluid flow

#637
20140246240
2014-09-04

Downhole drilling tool

#638
20140241654
2014-08-28

Bearing apparatus having superhard bearing elements

#639
20140231143
2014-08-21

Pressure compensation system for a motor bearing assembly

#640
20140224545
2014-08-14

Driveshaft assembly for a downhole motor

#641
20140199196
2014-07-17

Ball seat apparatus and method

#642
20140196905
2014-07-17

Downhole vibratory apparatus

#643
20140170011
2014-06-19

Bearing/gearing section for a PDM rotor/stator

#644
20140158426
2014-06-12

Apparatus and method for adjusting power units of downhole motors

#645
20140151127
2014-06-05

CONTROL MECHANISM

#646
20140131105
2014-05-15

Double shaft drilling apparatus with hanger bearings

#647
20140116785
2014-05-01

Turbodrill Using a Balance Drum

#648
20140110178
2014-04-24

Modular rotary steerable actuators, steering tools, and rotary steerable drilling systems with modular actuators

#649
20140102802
2014-04-17

Center discharge gas turbodrill

#650
20140097026
2014-04-10

Positive displacement motor (PDM) rotary steerable system (RSS) and apparatus

#651
20140083768
2014-03-27

Drilling bottom hole assembly having wireless power and data connection

#652
20140069724
2014-03-13

Turbine speed control system for downhole tool

#653
20140060936
2014-03-06

Motor and rotor catch assembly

#654
20140054092
2014-02-27

Rotary jet bit for jet drilling and cleaning

#655
20140054091
2014-02-27

Coatings for fluid energy device components

#656
20140041943
2014-02-13

Drilling motor valve and method of using same

#657
20140028293
2014-01-30

Measuring speed of rotation of a downhole motor

#658
20140027175
2014-01-30

Drilling optimization with a downhole motor

#659
20140027174
2014-01-30

Optimized drilling

#660
20140014368
2014-01-16

Downhole driving unit having a hydraulic motor in a wheel

#661
20140014367
2014-01-16

Downhole driving unit having a spring member for assembling a hydraulic motor housing

#662
20140014366
2014-01-16

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

#663
20140014365
2014-01-16

Downhole driving unit having a hydraulic motor with a planetary gearing system

#664
20130341099
2013-12-26

Downhole motor assembly

#665
20130333948
2013-12-19

Generating fluid telemetry

#666
20130313023
2013-11-28

Bearing apparatuses and motor assemblies using same

#667
20130313022
2013-11-28

Rotational locking mechanisms for drilling motors and powertrains

#668
20130306376
2013-11-21

Pressure balanced fluid operated reaming tool for use in placing wellbore tubulars

#669
20130292180
2013-11-07

Steerable Gas Turbodrill

#670
20130277116
2013-10-24

Mud motor with integrated percussion tool and drill bit

#671
20130240208
2013-09-19

Downhole drive force generating tool

#672
20130233547
2013-09-12

Subsea casing drilling system

#673
20130228381
2013-09-05

Wired or ported universal joint for downhole drilling motor

#674
20130199846
2013-08-08

Motor saver sub for down hole drilling assemblies

#675
20130186686
2013-07-25

Method and apparatus for vibrating horizontal drill string to improve weight transfer

#676
20130186619
2013-07-25

Method and apparatus of distributed systems for extending reach in oilfield applications

#677
20130175093
2013-07-11

Apparatus and methods utilizing progressive cavity motors and pumps with independent stages

#678
20130168080
2013-07-04

Radial vibrational apparatus

#679
20130160991
2013-06-27

Propulsion generator and method

#680
20130153242
2013-06-20

IN-RISER POWER GENERATION

#681
20130133950
2013-05-30

Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners

#682
20130118247
2013-05-16

Reinforced directional drilling assemblies and methods of forming same

#683
20130099500
2013-04-25

Downhole apparatus for electrical power generation from shaft flexure

#684
20130098686
2013-04-25

Dynamic steering tool

#685
20130092445
2013-04-18

Bearing assembly for downhole motor

#686
20130092444
2013-04-18

Cutting tool integrated in a drillstring

#687
20130068531
2013-03-21

Large core sidewall coring

#688
20130064702
2013-03-14

Downhole motors and pumps with asymmetric lobes

#689
20130056223
2013-03-07

DOWNHOLE TORQUE LIMITER AND METHOD

#690
20130052067
2013-02-28

Downhole Motors and Pumps with Improved Stators and Methods of Making and Using Same

#691
20130051177
2013-02-28

Full flow pulser for measurement while drilling (MWD) device

#692
20130048384
2013-02-28

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

#693
20130048300
2013-02-28

Controlled pressure pulser for coiled tubing applications

#694
20130025941
2013-01-31

Methods of coating wellbore tools and components having such coatings

#695
20130020132
2013-01-24

Downhole motors with a lubricating unit for lubricating the stator and rotor

#696
20130014995
2013-01-17

Downhole motor with diamond-like carbon coating on stator and/or rotor and method of making said downhole motor

#697
20130008719
2013-01-10

Coring tools and related methods

#698
20130000991
2013-01-03

Systems and methods to reduce oscillations in magnetic couplings

#699
20130000986
2013-01-03

Drilling motors with elastically deformable lobes

#700
20120325561
2012-12-27

Housing, mandrel and bearing assembly for downhole drilling motor

#701
20120292116
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#702
20120292113
2012-11-22

Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods

#703
20120292033
2012-11-22

Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods

#704
20120292020
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#705
20120292019
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#706
20120292018
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#707
20120292017
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#708
20120292016
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#709
20120291539
2012-11-22

Vortex controlled variable flow resistance device and related tools and methods

#710
20120273282
2012-11-01

Downhole tools having mechanical joints with enhanced surfaces

#711
20120255789
2012-10-11

Bearing assemblies, and bearing apparatuses and motor assemblies using same

#712
20120234603
2012-09-20

Mud motor assembly

#713
20120201659
2012-08-09

Multiple motor/pump array

#714
20120199363
2012-08-09

Cam mechanism for downhole rotary valve actuation and a method for drilling

#715
20120196690
2012-08-02

Drive shaft universal joint assembly with radial elliptical projections

#716
20120177308
2012-07-12

Pressure compensation system for an oil-sealed mud motor bearing assembly

#717
20120160569
2012-06-28

High temperature drilling motor drive with cycloidal speed reducer

#718
20120160473
2012-06-28

Wired mud motor components, methods of fabricating the same, and downhole motors incorporating the same

#719
20120145394
2012-06-14

Rotatable wireline tool of enhanced hydraulic drive consistency

#720
20120138298
2012-06-07

Methods and apparatus for wellbore construction and completion

#721
20120132470
2012-05-31

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

#722
20120127829
2012-05-24

Generating fluid telemetry

#723
20120118647
2012-05-17

DOWNHOLE MUD MOTOR AND METHOD OF IMPROVING DURABILTY THEREOF

#724
20120118646
2012-05-17

Borehole cutting assembly for directional cutting

#725
20120097451
2012-04-26

ELECTRICAL CONTROLLER FOR ANTI-STALL TOOLS FOR DOWNHOLE DRILLING ASSEMBLIES

#726
20120043135
2012-02-23

Method of forming a bore

#727
20120031676
2012-02-09

Apparatus and method for directional drilling

#728
20120024632
2012-02-02

DOWNHOLE SEAL AND METHOD OF LUBRICATING A DOWNHOLE TOOL

#729
20120018227
2012-01-26

Components and motors for downhole tools and methods of applying hardfacing to surfaces thereof

#730
20120018218
2012-01-26

Apparatus for directional drilling

#731
20120018141
2012-01-26

Well tool having a nanoparticle reinforced metallic coating

#732
20110315451
2011-12-29

DRIVE SYSTEM FOR A DOWNHOLE TOOL

#733
20110278070
2011-11-17

System and method for drilling lateral boreholes

#734
20110278066
2011-11-17

Method and apparatus for transmitting sensor response data and power through a mud motor

#735
20110240377
2011-10-06

Drill Bit Jack Element with a Plurality of Inserts

#736
20110240370
2011-10-06

Drilling motor with a locking collet sleeve stabilizer

#737
20110240369
2011-10-06

Downhole Steerable Hammer Element

#738
20110220414
2011-09-15

Multi-coupling reduced length measure while drilling apparatus

#739
20110214963
2011-09-08

Locking clutch for downhole motor

#740
20110182761
2011-07-28

STATOR FOR USE IN HELICOIDAL MOTOR

#741
20110180329
2011-07-28

Systems and methods for providing a gearless drilling turbine

#742
20110180326
2011-07-28

Apparatus and method for cutting a wellbore

#743
20110174499
2011-07-21

Flow regulator for downhole progressing cavity motor

#744
20110168447
2011-07-14

Reaming tool

#745
20110150686
2011-06-23

Progressive cavity hydraulic machine

#746
20110147091
2011-06-23

Downhole motor

#747
20110129375
2011-06-02

WORK EXTRACTION FROM DOWNHOLE PROGRESSIVE CAVITY DEVICES

#748
20110127044
2011-06-02

Remotely controlled apparatus for downhole applications and methods of operation

#749
20110120776
2011-05-26

Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same

#750
20110116961
2011-05-19

STATORS FOR DOWNHOLE MOTORS, METHODS FOR FABRICATING THE SAME, AND DOWNHOLE MOTORS INCORPORATING THE SAME

#751
20110116960
2011-05-19

Stator inserts, methods of fabricating the same, and downhole motors incorporating the same

#752
20110116959
2011-05-19

Stators for downwhole motors, methods for fabricating the same, and downhole motors incorporating the same

#753
20110100715
2011-05-05

Center discharge gas turbodrill

#754
20110073374
2011-03-31

Flow pulsing device for a drilling motor

#755
20110056695
2011-03-10

Valves, bottom hole assemblies, and method of selectively actuating a motor

#756
20110036631
2011-02-17

Method and apparatus for controlling downhole rotational rate of a drilling tool

#757
20110024190
2011-02-03

Transmitting sensor response data and power through a mud motor

#758
20110005839
2011-01-13

Retention means for a seal boot used in a universal joint in a downhole motor driveshaft assembly

#759
20100316518
2010-12-16

Progressing cavity pump/motor

#760
20100314172
2010-12-16

SHAFT CATCH

#761
20100307833
2010-12-09

Jet turbodrill

#762
20100224356
2010-09-09

APPARATUS FOR ELECTRICAL POWER AND/OR DATA TRANSFER BETWEEN ROTATING COMPONENTS IN A DRILL STRING

#763
20100212966
2010-08-26

Downhole tool actuation

#764
20100212965
2010-08-26

Downhole tool actuation

#765
20100187014
2010-07-29

Thrust bearing assembly

#766
20100187009
2010-07-29

Adjustable downhole motors and methods for use

#767
20100183430
2010-07-22

Turbine for driving a generator in a drill string

#768
20100170671
2010-07-08

Systems and methods for providing electrical transmission in downhole tools

#769
20100163306
2010-07-01

Modeling vibration effects introduced by mud motor

#770
20100147591
2010-06-17

Multiphase drilling systems and methods

#771
20100133833
2010-06-03

ELECTRICAL POWER GENERATION FOR DOWNHOLE EXPLORATION OR PRODUCTION DEVICES

#772
20100133011
2010-06-03

Drill string with modular motor units

#773
20100129170
2010-05-27

Long reach spindle drive systems and method

#774
20100126773
2010-05-27

Drilling apparatus and system for drilling wells

#775
20100122850
2010-05-20

Systems and methods for protecting drill blades in high speed turbine drills

#776
20100116554
2010-05-13

Turbo-gear for speedy drilling wells

#777
20100108393
2010-05-06

DOWNHOLE MUD MOTOR AND METHOD OF IMPROVING DURABILTY THEREOF

#778
20100078219
2010-04-01

Jet motor for providing rotation in a downhole tool

#779
20100052941
2010-03-04

Electrical transmission between rotating and non-rotating members

#780
20100038142
2010-02-18

APPARATUS AND METHOD FOR HIGH TEMPERATURE DRILLING OPERATIONS

#781
20100018774
2010-01-28

Excavator apparatus for underground excavation

#782
20100006342
2010-01-14

METHOD OF MAKING WELLBORE MOINEAU DEVICES

#783
20090321136
2009-12-31

Drilling apparatus and method for drilling wells

#784
20090275415
2009-11-05

Drive shaft assembly for a downhole motor

#785
20090272581
2009-11-05

LOAD DISTRIBUTION FOR MULTI-STAGE THRUST BEARINGS

#786
20090268995
2009-10-29

Thrust bearing assembly

#787
20090266544
2009-10-29

Signal operated tools for milling, drilling, and/or fishing operations

#788
20090236148
2009-09-24

Flow guide actuation

#789
20090229883
2009-09-17

Flow guide actuation

#790
20090223676
2009-09-10

Selective agitation

#791
20090205869
2009-08-20

System of monitoring rotational time of rotatable equipment

#792
20090173544
2009-07-09

Method and apparatus for lateral well drilling utilizing an abrasive fluid stream discharged from a rotating nozzle

#793
20090169364
2009-07-02

Progressive cavity apparatus with transducer and methods of forming and use

#794
20090152009
2009-06-18

Nano particle reinforced polymer element for stator and rotor assembly

#795
20090142594
2009-06-04

Erosion resistant surface and method of making erosion resistant surfaces

#796
20090139769
2009-06-04

Apparatus and method for a hydraulic diaphragm downhole mud motor

#797
20090107723
2009-04-30

Pulse rate of penetration enhancement device and method

#798
20090097788
2009-04-16

Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same

#799
20090095528
2009-04-16

Downhole motor assembly and method for torque regulation

#800
20080271923
2008-11-06

Flow hydraulic amplification for a pulsing, fracturing, and drilling (PFD) device

#801
20080264693
2008-10-30

Drive system

#802
20080264692
2008-10-30

Locking clutch for downhole motor

#803
20080217987
2008-09-11

Drilling apparatus and system for drilling wells

#804
20080217062
2008-09-11

Drilling apparatus and system for drilling wells

#805
20080190669
2008-08-14

Bearing assembly for downhole mud motor

#806
20080185186
2008-08-07

DRILLING ASSEMBLY

#807
20080128140
2008-06-05

Method and apparatus for wellbore construction and completion

#808
20080115976
2008-05-22

Thrust bearing assembly

#809
20080066961
2008-03-20

Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus

#810
20080066905
2008-03-20

Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus

#811
20080060847
2008-03-13

METHOD AND APPARATUS FOR TRANSMITTING SENSOR RESPONSE DATA AND POWER THROUGH A MUD MOTOR

#812
20080050259
2008-02-28

Highly reinforced elastomer for use in downhole stators

#813
20080029304
2008-02-07

Mandrel and bearing assembly for downhole drilling motor

#814
20080029303
2008-02-07

Technique and apparatus for drilling and completing a well in one half trip

#815
20080000083
2008-01-03

PROCESS FOR LINING A FLUID HELICAL DEVICE STATOR

#816
20070227779
2007-10-04

Jet motor for providing rotation in a downhole tool

#817
20070196205
2007-08-23

Method and apparatus for extending flow range of a downhole turbine

#818
20070119630
2007-05-31

Jack element adapted to rotate independent of a drill bit

#819
20070089911
2007-04-26

Downhole drive force generating tool

#820
20070079988
2007-04-12

Method and apparatus for transmitting sensor response data and power through a mud motor

#821
20070068705
2007-03-29

Apparatus and method to reduce fluid pressure in a wellbore

#822
20070044954
2007-03-01

Downhole motor locking assembly and method

#823
20070018848
2007-01-25

Electrical connection assembly

#824
20060283636
2006-12-21

Fluid driven drilling motor and system

#825
20060278439
2006-12-14

Thrust bearing assembly

#826
20060263215
2006-11-23

ROLL STABILISED UNIT

#827
20060243493
2006-11-02

Method and apparatus for shifting speeds in a fluid-actuated motor

#828
20060243492
2006-11-02

Inner and outer motor with eccentric stabilizer

#829
20060237234
2006-10-26

Earth boring tool

#830
20060216178
2006-09-28

Downhole motor seal and method

#831
20060157282
2006-07-20

Managed pressure drilling

#832
20060131079
2006-06-22

Composite motor stator

#833
20060124354
2006-06-15

Modular drilling apparatus with power and/or data transmission

#834
20060090936
2006-05-04

Turbodrill with asymmetric stator and rotor vanes

#835
20050211471
2005-09-29

System and method for controlling drill motor rotational speed

#836
20050205250
2005-09-22

Apparatus and methods for drilling with casing

#837
20050189146
2005-09-01

Inverted motor for drilling rocks, soils and man-made materials and for re-entry and cleanout of existing wellbores and pipes

#838
20050173157
2005-08-11

Flow control valve and method of controlling rotation in a downhole tool

#839
20050161259
2005-07-28

Unsymmetrical profile threads for use in a positive displacement motor housing

#840
20050142015
2005-06-30

Hydraulic automatic boosting pump

#841
20050126828
2005-06-16

Self-blocking safety device

#842
20050092525
2005-05-05

Down-hole vane motor

#843
20050045382
2005-03-03

Apparatus and method to reduce fluid pressure in a wellbore

#844
19229083
2026-05-19

Rotary flow control apparatus

#845
19087237
2026-05-05

Bottom hole assembly for rotary drilling

#846
19084298
2025-09-23

Air motor assembly

#847
19076032
2025-09-30

Gear reducer

#848
19075827
2026-05-05

Methods and systems for detecting and mitigating downhole motor dysfunction

#849
19037176
2025-10-21

Apparatus with fluid powered drive assemblies and method of fabrication

#850
18983918
2025-12-02

Motor cooling and debris management during milling

#851
18738668
2025-12-09

Air rotary system for a down hole drill assembly

#852
18491784
2024-05-21

Hydrojets rotary drill bit

#853
18388247
2025-02-11

Downhole reamer with rotating sleeve

#854
18087001
2024-02-27

Method and apparatus for deploying and cementing liners across challenging well profiles

#855
17936141
2023-12-05

Drill string rotation controller for directional drilling

#856
17856619
2023-05-16

Piston motor system

#857
17547126
2024-02-20

Coupling with enhanced torsional, fatigue strength, and wear resistance

#858
17492588
2025-10-28

Vortex controlled variable flow resistance device and related tools and methods

#859
17456280
2023-04-04

Systems and methods for employing multiple downhole drilling motors

#860
17365987
2022-10-04

Full-metal dynamic-sealed concentrically-centered downhole displacement motor

#861
16791256
2020-08-25

Parameter monitoring and control for an electric driven hydraulic fracking system

#862
16738607
2020-08-25

Rotor catch for bottomhole assembly

#863
16437717
2020-01-28

Formation dip geo-steering method

#864
16427848
2020-03-10

Bi-directional well drilling

#865
16366745
2020-09-22

Self-adjusting downhole motor

#866
16365923
2019-10-01

Methods and systems of creating pressure pulses for pulse telemetry for MWD tools using a direct drive hydraulic ram

#867
16181155
2019-06-11

Formation dip geo-steering method

#868
15857556
2018-12-04

High speed motor drive

#869
15857493
2019-01-08

Sealless downhole system with magnetically supported rotor

#870
15857472
2019-01-01

Sealless downhole system with magnetically supported rotor

#871
15586712
2017-10-24

High speed precision guide device for creating holes for piles or other support members

#872
15474665
2018-04-03

Tool and method for actively cooling downhole electronics

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15355681
2019-05-14

Mud motor coupling system

#874
15256251
2017-11-07

Subsea drilling systems and methods

#875
15179571
2019-05-07

Mud motor apparatus and system

#876
14989682
2017-05-23

Downhole power conversion and management using a dynamically variable displacement pump

#877
14876777
2017-10-24

Motor rotary steerable system

#878
14837544
2019-12-24

Vortex controlled variable flow resistance device and related tools and methods

#879
14800646
2016-04-26

Downhole adjustable mud motor

#880
14619981
2015-08-25

Downhole adjustable mud motor

#881
14191664
2019-08-20

Fluid driven drilling motor