ClassID:

135437

E21B29/06 - CPC Classification

Classification description:

Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows ; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground Cutting windows, e.g. directional window cutters for whipstock operations

Recent Application in this class:
#1
20260098450
2026-04-09

COMPOSITE JOINT WITH CASING EXIT LOCATOR

#2
20260078638
2026-03-19

WHIPSTOCK FOR USE WITH A MILL BIT INCLUDING VARYING MATERIAL REMOVAL RATES

#3
20260043304
2026-02-12

Window Mill for Sidetracking

#4
20250376895
2025-12-11

SYSTEM AND METHODS FOR IN-SITU PERMEABILITY MEASUREMENTS

#5
20250361792
2025-11-27

Systems and Methods for Downhole Service Tools

#6
20250347204
2025-11-13

APPARATUS AND METHOD FOR MILLING OPENINGS IN AN UNCEMENTED BLANK PIPE

#7
20250334026
2025-10-30

SYSTEMS AND METHODS FOR MULTILATERAL COMPLETIONS

#8
20250320790
2025-10-16

EUTECTIC ALLOY SYSTEM FOR CONCENTRIC CASING STRING CEMENT REPAIR

#9
20250283384
2025-09-11

DOWNHOLE TOOL INCLUDING RELATED LUG SLOTS AND LUGS FOR COUPLING A MILLING TOOL AND WHIPSTOCK ASSEMBLY

#10
20250283383
2025-09-11

DOWNHOLE TOOL INCLUDING RELATED LUG SLOTS AND LUGS FOR COUPLING A MILLING TOOL AND WHIPSTOCK ASSEMBLY

#11
20250270890
2025-08-28

LASER MILLING SYSTEM FOR CONCENTRIC CASING STRING CEMENT REPAIR

#12
20250163764
2025-05-22

ALIGNABLE GUIDANCE DEVICE FOR CASING ENTRY MILLING AND CEMENTING OPERATIONS

#13
20250154842
2025-05-15

KNOCK-OFF PLUG, METHOD, AND SYSTEM

#14
20250122773
2025-04-17

ONE TRIP CEMENT PLUGGING AND MILLING/DRILLING SIDETRACK ASSEMBLY, METHOD, AND WELLBORE SYSTEM

#15
20250101809
2025-03-27

ACCESSING WELLS BELOW AN OBSTRUCTION OR DISCONTINUITY

#16
20250101720
2025-03-27

INCREASING PRODUCTION FROM WATER WELLS

#17
20250067151
2025-02-27

LATERAL LOCATING ASSEMBLY HAVING ONE OR MORE PRODUCTION PORTS

#18
20250003302
2025-01-02

Whipstock integrated to completion string for coiled tubing operations

#19
20240410254
2024-12-12

SYSTEMS AND METHODS FOR MULTILATERAL COMPLETIONS

#20
20240410242
2024-12-12

DOWNHOLE TOOL INCLUDING RELATED LUG SLOTS AND LUGS FOR COUPLING A MILLING TOOL AND WHIPSTOCK ASSEMBLY

#21
20240376784
2024-11-14

WHIPSTOCK FOR USE WITH A MILL BIT INCLUDING VARYING MATERIAL REMOVAL RATES

#22
20240352819
2024-10-24

Method and apparatus for milling a window in casing

#23
20240254837
2024-08-01

COILED TUBING FLEXIBLE DRILL ROD ULTRA-SHORT RADIUS RADIAL DRILLING STRING, SYSTEM AND METHOD

#24
20240254835
2024-08-01

Modified whipstock design integrating smart cleanout mechanisms

#25
20240247558
2024-07-25

ANNULAR PRESSURE ACTIVATED DOWNHOLE TOOL

#26
20240209697
2024-06-27

ALIGNABLE GUIDANCE DEVICE FOR CASING ENTRY MILLING OPERATIONS

#27
20240200416
2024-06-20

ANNULAR PRESSURE ACTIVATED DOWNHOLE TOOL

#28
20240093561
2024-03-21

Milling tool

#29
20240084679
2024-03-14

APPARATUS AND METHOD FOR MILLING OPENINGS IN AN UNCEMENTED BLANK PIPE

#30
20240084658
2024-03-14

WHIPSTOCK ASSEMBLY

#31
20230272681
2023-08-31

REMOVING WELLBORE COMPLETION COMPONENTS IN A WELLBORE

#32
20230272672
2023-08-31

Modified whipstock design integrating cleanout and setting mechanisms

#33
20230243221
2023-08-03

Annular pressure activated downhole tool

#34
20230243215
2023-08-03

SYSTEMS AND METHODS FOR SIDETRACKING OPERATIONS

#35
20230228172
2023-07-20

Method for positioning a multilateral junction without the need for a deflector assembly

#36
20230228171
2023-07-20

Lateral locating assembly having one or more production ports

#37
20230228170
2023-07-20

WHIPSTOCK WITH DETACHABLE WHIPFACE AND SEALING CAPABILITIES FOR MULTILATERAL SYSTEMS

#38
20230228163
2023-07-20

Sidetracking operation via laser cutting

#39
20230129281
2023-04-27

Electrically activated downhole anchor system

#40
20230125650
2023-04-27

Electrically activated whipstock interface system

#41
20230115832
2023-04-13

Systems and Methods for Downhole Service Tools

#42
20230111830
2023-04-13

Radial drilling unit

#43
20230105473
2023-04-06

Cutting a sidetrack window

#44
20230101688
2023-03-30

Downhole tool with a propellant charge

#45
20230036409
2023-02-02

Whipstock retrieving bit

#46
20230015654
2023-01-19

Whipstock for use with a mill bit including varying material removal rates

#47
20230008467
2023-01-12

Mill bit including varying material removal rates

#48
20220389771
2022-12-08

Integrated whipstock and separation method thereof

#49
20220389762
2022-12-08

Mill, downhole tool with mill, method and system

#50
20220298897
2022-09-22

Apparatus and method for milling openings in an uncemented blank pipe

#51
20220170336
2022-06-02

Method and apparatus for milling a window in casing

#52
20220162922
2022-05-26

System And Method For Real-Time Drilling Or Milling Optimization

#53
20220162920
2022-05-26

Contingency release of mill from whipstock

#54
20220145713
2022-05-12

Mill to whipstock connector for a window cutting system

#55
20220136331
2022-05-05

Selectively openable communication port for a wellbore drilling system

#56
20220127952
2022-04-28

Assembly, indicating device, and method for indicating window milling in a well

#57
20220074279
2022-03-10

Apparatus and method to longitudinally and circumferentially cut and remove a section of a wellbore tubular

#58
20220065073
2022-03-03

Apparatus and method for creating a fluid communication line in a downhole environment

#59
20210404279
2021-12-30

Guided wash pipe milling

#60
20210381339
2021-12-09

Piston initiator for sidetrack assembly

#61
20210372219
2021-12-02

Whipstock assembly

#62
20210363842
2021-11-25

Casing exit anchor with redundant activation system

#63
20210355803
2021-11-18

Multilateral acid stimulation process

#64
20210348465
2021-11-11

Window mill including a hydraulic line connector

#65
20210332658
2021-10-28

Methods and systems for drilling a multilateral well

#66
20210317705
2021-10-14

Window mill and whipstock connector for a resource exploration and recovery system

#67
20210301615
2021-09-30

Window mill and whipstock connector for a resource exploration and recovery system

#68
20210301611
2021-09-30

Casing exit anchor with redundant setting system

#69
20210301609
2021-09-30

Casing exit anchor with redundant activation system

#70
20210285307
2021-09-16

Bottom hole assembly with a cleaning tool

#71
20210246750
2021-08-12

One Trip Bottom Hole Assembly and Method for Milling Casing and Directionally Drilling a Lateral Wellbore

#72
20210172255
2021-06-10

Eccentric dual string exit module

#73
20210054708
2021-02-25

Cutting a sidetrack window in a cased wellbore

#74
20210054707
2021-02-25

Creation of a window opening/exit utilizing a single trip process

#75
20210047901
2021-02-18

Drillable window assembly for controlling the geometry of a multilateral wellbore junction

#76
20210025255
2021-01-28

Downhole tool with a propellant charge

#77
20210017854
2021-01-21

SYSTEM AND METHOD FOR RECOVERING A SLOT AND FORMING A WHIPSTOCK CASING EXIT IN A TUBULAR

#78
20200386053
2020-12-10

WHIPSTOCK ASSEMBLY

#79
20200378206
2020-12-03

Downhole tool with a propellant charge

#80
20200378203
2020-12-03

Method and apparatus for introducing a junction assembly including a transition joint and a load transfer device

#81
20200362656
2020-11-19

Degradable window for multilateral junction

#82
20200347688
2020-11-05

Apparatus and method for milling a window in a borehole

#83
20200332615
2020-10-22

Systems and methods for downhole service tools

#84
20200332614
2020-10-22

Whipstock

#85
20200325740
2020-10-15

Magnetic swarf drum

#86
20200318435
2020-10-08

BI-MILL DEPLOYED WITH DUAL-ACTION HYDRAULICALLY OPERABLE ANCHOR AND METHODS OF OPERATION AND MANUFACTURE FOR WELLBORE DEPARTURE MILLING

#87
20200318434
2020-10-08

Hydraulic drilling systems and methods

#88
20200291748
2020-09-17

Milling and whipstock assembly with flow diversion component

#89
20200173238
2020-06-04

Combined multilateral window and deflector and junction system

#90
20200165896
2020-05-28

Plug and abandonment system for forming an upper plug when abandoning an oil and gas well

#91
20200141190
2020-05-07

Flexible riser insulation removal tool for ultrasonic test inspection

#92
20200131886
2020-04-30

Bottom hole assembly with a cleaning tool

#93
20200102801
2020-04-02

Milling apparatus with stabilization feature

#94
20200063512
2020-02-27

Downhole cutting tool and anchor arrangement

#95
20200040683
2020-02-06

Apparatus and method for forming a lateral wellbore

#96
20200032631
2020-01-30

METHOD OF ENHANCED OIL RECOVERY AND INTENSIFICATION OF PRODUCTION FROM OIL, GAS AND CONDENSATE WELLS BY MEANS OF HYDROMONITOR RADIAL UNDERBALANCE FORMATION PENETRATION

#97
20200011134
2020-01-09

BI-MILL FOR MILLING AN OPENING THROUGH A WELLBORE CASING AND IN A PREPLANNED LATERAL DRILLING PATH IN DEPARTURE FROM THE WELLBORE AXIS

#98
20190330949
2019-10-31

Workover tool string

#99
20190330944
2019-10-31

Dual-action hydraulically operable anchor and methods of operation and manufacture for wellbore exit milling

#100
20190316435
2019-10-17

Whipstock assembly for forming a window

#101
20190242230
2019-08-08

System and methods for constructing and fracture stimulating multiple ultra-short radius laterals from a parent well

#102
20190162060
2019-05-30

Ported casing collar for downhole operations, and method for accessing a formation

#103
20190162037
2019-05-30

Place-n-perf

#104
20190120005
2019-04-25

MODULAR WINDOW MILL ASSEMBLY AND METHOD

#105
20190093436
2019-03-28

Drilling with a whipstock system

#106
20190085661
2019-03-21

One-trip multilateral tool

#107
20180371860
2018-12-27

Dissolvable whipstock for multilateral wellbore

#108
20180363401
2018-12-20

Casing exit joint with guiding profiles and methods for use

#109
20180347613
2018-12-06

Bolt having torque resistant shear region

#110
20180340564
2018-11-29

Torque resistant shear bolt having flat faces

#111
20180340401
2018-11-29

Method and system for creating unloading slots in oil and gas wells by stretch-slotting perforation

#112
20180334872
2018-11-22

Correction for drill pipe compression

#113
20180328118
2018-11-15

Dual Purpose Radial Drilling Tool String for Cutting Casing and Rock in a Single Trip

#114
20180320448
2018-11-08

Window mill hydraulic line connection

#115
20180313156
2018-11-01

Apparatus and method for drilling deviated wellbores

#116
20180274300
2018-09-27

Reduced trip well system for multilateral wells

#117
20180245414
2018-08-30

Self-adjusting slips

#118
20180238145
2018-08-23

Directional micro lateral drilling system

#119
20180209233
2018-07-26

Whipstock/bottom hole assembly interconnection and method

#120
20180209232
2018-07-26

Whipstock/bottom hole assembly arrangement and method

#121
20180195346
2018-07-12

Whipstock valve with nozzle bypass feature

#122
20180187519
2018-07-05

Multilateral intelligent completion with stackable isolation

#123
20180163497
2018-06-14

Downhole tool with a propellant charge

#124
20180135386
2018-05-17

Mechanical Casing Exit Window Locator and Whipstock Alignment System

#125
20180094496
2018-04-05

Downhole milling cutting structures

#126
20180045029
2018-02-15

System and a method for exploitation of gas from gas hydrate formations

#127
20180010419
2018-01-11

Treatment methods for water or gas reduction in hydrocarbon production wells

#128
20180003001
2018-01-04

Downhole cutting and sealing apparatus

#129
20170362896
2017-12-21

Wellbore interactive-deflection mechanism

#130
20170335647
2017-11-23

SINGLE-PASS MILLING ASSEMBLY

#131
20170328177
2017-11-16

Through tubing diverter for multi-lateral treatment without top string removal

#132
20170306711
2017-10-26

Hydraulic Whipstock Anchor

#133
20170234104
2017-08-17

METHODS FOR WELL TREATMENT

#134
20170214213
2017-07-27

HIGH POWER LASERS, WAVELENGTH CONVERSIONS, AND MATCHING WAVELENGTHS FOR USE ENVIRONMENTS

#135
20170204667
2017-07-20

Hydraulic drilling systems and methods

#136
20170152718
2017-06-01

Casing windowing method and tool using coiled tubing

#137
20170138139
2017-05-18

Watermelon mill with replaceable cutting structure

#138
20170130565
2017-05-11

Erosion-Resistant Multilateral Junctions

#139
20170101838
2017-04-13

Hydraulically released running tool for setting a whipstock anchor before cementing therethrough

#140
20170044866
2017-02-16

Whipstock valve with nozzle bypass feature

#141
20170030157
2017-02-02

Multifunction wellbore tubular penetration tool

#142
20160348456
2016-12-01

Milling apparatus

#143
20160348455
2016-12-01

Cutter assembly for cutting a tubular

#144
20160341009
2016-11-24

Shear mechanism with preferential shear orientation

#145
20160312587
2016-10-27

Creating radial slots in a wellbore

#146
20160305221
2016-10-20

Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore

#147
20160305195
2016-10-20

Mill catch mechanism

#148
20160298408
2016-10-13

Lower mill spaced cutting ring structure

#149
20160265296
2016-09-15

Control system for downhole casing milling system

#150
20160258237
2016-09-08

Mill blade torque support

#151
20160258236
2016-09-08

Mill blade torque support

#152
20160251909
2016-09-01

Casing window assembly

#153
20160238055
2016-08-18

Dual-configuration shear bolt

#154
20160237805
2016-08-18

Methods and systems for orienting a tool in a wellbore

#155
20160237770
2016-08-18

Cutting tool

#156
20160230488
2016-08-11

Pre-milled windows having a composite material covering

#157
20160230464
2016-08-11

Downhole communication between wellbores utilizing swellable materials

#158
20160222778
2016-08-04

Depth, load and torque referencing in a wellbore

#159
20160186530
2016-06-30

METHOD FOR IN-WELLBORE WELDING

#160
20160145956
2016-05-26

Whipstock and deflector assembly for multilateral wellbores

#161
20160138354
2016-05-19

Downhole umbilical release assembly

#162
20160130904
2016-05-12

Downhole machining system and method

#163
20160123102
2016-05-05

Method for hydraulic communication with target well from relief well

#164
20160108682
2016-04-21

Casing window assembly

#165
20160090805
2016-03-31

Balancing load on milling cutting elements

#166
20160010412
2016-01-14

Casing exit mills and apparatus and methods of use

#167
20150376966
2015-12-31

Cutting insert for initiating a cutout

#168
20150376955
2015-12-31

Lateral junction for use in a well

#169
20150345241
2015-12-03

Whipstock assembly having anchor and eccentric packer

#170
20150345224
2015-12-03

Method and system for laterally drilling through a subterranean formation

#171
20150337613
2015-11-26

Method and apparatus for milling a zero radius lateral window in casing

#172
20150260020
2015-09-17

Well casing perforator and apparatus

#173
20150233218
2015-08-20

Hydraulic cutting tool, system and method for controlled hydraulic cutting through a pipe wall in a well

#174
20150226042
2015-08-13

Open hole expandable junction

#175
20150211318
2015-07-30

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

#176
20150184460
2015-07-02

Systems for forming lateral wellbores

#177
20150176332
2015-06-25

Method of testing a subsurface formation for the presence of hydrocarbon fluids

#178
20150152717
2015-06-04

Casing window assembly

#179
20150152703
2015-06-04

Systems and methods of supporting a multilateral window

#180
20150152702
2015-06-04

Lower mill spaced cutting ring structure

#181
20150144340
2015-05-28

Removal of casing slats by cutting casing collars

#182
20150101812
2015-04-16

Milling system for abandoning a wellbore

#183
20150068723
2015-03-12

In-line adapter for a perforating gun

#184
20150060040
2015-03-05

Downhole Cutting Tool Having A Jetted Top Bushing

#185
20150027708
2015-01-29

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

#186
20150021029
2015-01-22

Method and apparatus for casing entry

#187
20150007993
2015-01-08

Protection of casing lowside while milling casing exit

#188
20150007991
2015-01-08

Method of providing mechanical stability around an entrance of a new well path to be formed from an existing well

#189
20140353479
2014-12-04

Injection for sampling heavy oil

#190
20140352964
2014-12-04

Systems and methods for removing a section of casing

#191
20140311741
2014-10-23

Cable compatible rig-less operable annuli engagable system for using and abandoning a subterranean well

#192
20140311729
2014-10-23

Hydromechanical slot perforator (variants)

#193
20140299324
2014-10-09

Tubular system for jet drilling

#194
20140251615
2014-09-11

Window milling systems with expandable blades for securing a whipstock assembly and method of use

#195
20140224510
2014-08-14

Casing window assembly

#196
20140216744
2014-08-07

Method of intersecting a first well bore by a second well bore

#197
20140131036
2014-05-15

Apparatus and method for milling/drilling windows and lateral wellbores without locking using unlocked fluid-motor

#198
20140124201
2014-05-08

Nozzle selective perforating jet assembly

#199
20140096966
2014-04-10

Method and Apparatus for Completion of Heavy Oil Unconsolidated Sand Reservoirs

#200
20140014315
2014-01-16

Modular downhole tool

#201
20130341048
2013-12-26

Hydraulically triggered anchor

#202
20130333899
2013-12-19

Disintegrable centralizer

#203
20130327575
2013-12-12

Earth removal member with features for facilitating drill-through

#204
20130319651
2013-12-05

Cutting unit of a hydromecanical slot perforator

#205
20130284458
2013-10-31

Wellbore casing section with moveable portion for providing a casing exit

#206
20130277040
2013-10-24

Milling Assembly

#207
20130255968
2013-10-03

Casing window assembly

#208
20130248174
2013-09-26

Autonomous downhole conveyance system

#209
20130213641
2013-08-22

System and method for casing milling

#210
20130199784
2013-08-08

Extended whipstock and mill assembly

#211
20130153224
2013-06-20

Methods of controllably milling a window in a cased wellbore using a pressure differential to cause movement of a mill

#212
20130118727
2013-05-16

Window joint for lateral wellbore construction

#213
20130025864
2013-01-31

Whipstock assembly and method for low side exit

#214
20130008659
2013-01-10

WELLBORE LASER OPERATIONS

#215
20130008658
2013-01-10

Wellbore laser operations

#216
20130008657
2013-01-10

Wellbore laser operations

#217
20130008656
2013-01-10

Wellbore laser operations

#218
20130008653
2013-01-10

Wellbore laser operations

#219
20130000907
2013-01-03

Milling Assembly

#220
20130000906
2013-01-03

WELLBORE LASER OPERATIONS

#221
20120305251
2012-12-06

METHOD AND DEVICE FOR CLOSING A WELL IN THE GROUND

#222
20120298362
2012-11-29

Window joint for lateral wellbore construction and method for opening same

#223
20120279709
2012-11-08

EXPANDABLE DOWNHOLE CASING COUPLING LOCATOR TOOL

#224
20120279706
2012-11-08

METHOD AND DEVICE FOR CLOSING A WELL

#225
20120222902
2012-09-06

High performance wellbore departure and drilling system

#226
20120199344
2012-08-09

Method and apparatus for communicating with a device located in a borehole

#227
20120160493
2012-06-28

Method and apparatus for milling a zero radius lateral window in casing

#228
20120138369
2012-06-07

METHODS TO MANUFACTURE DOWNHOLE TOOLS WITH FINISHED FEATURES AS AN INTEGRAL CAGE

#229
20120118562
2012-05-17

SYSTEM, APPARATUS AND METHOD FOR ABRASIVE JET FLUID CUTTING

#230
20120103694
2012-05-03

Earth removal member with features for facilitating drill-through

#231
20120103687
2012-05-03

Redundant position reference system for multilateral exit construction and method for use of same

#232
20120103612
2012-05-03

System and method for opening a window in a casing string for multilateral wellbore construction

#233
20120061079
2012-03-15

Perforating and jet drilling method and apparatus

#234
20120031678
2012-02-09

Method of forming a bore

#235
20120029702
2012-02-02

Wellbore machining device

#236
20120006548
2012-01-12

Perforating and jet drilling method and apparatus

#237
20110308785
2011-12-22

Whipstock assembly

#238
20110297371
2011-12-08

DOWNHOLE MARKERS

#239
20110290561
2011-12-01

Downhole hydraulic jetting assembly, and method for stimulating a production wellbore

#240
20110290476
2011-12-01

Well assembly coupling

#241
20110277998
2011-11-17

Apparatus and method for setting a tool in a borehole

#242
20110247815
2011-10-13

Method and apparatus for single run cutting of well casing and forming subsurface lateral passages from a well

#243
20110240283
2011-10-06

Well assembly with a millable member in an opening

#244
20110240282
2011-10-06

Well assembly with recesses facilitating branch wellbore creation

#245
20110203850
2011-08-25

Methods of drilling using differing types of cutting elements

#246
20110203847
2011-08-25

Downhole hydraulic jetting assembly, and method for stimulating a production wellbore

#247
20110198128
2011-08-18

Earth-boring tools including abrasive cutting structures and related methods

#248
20110174477
2011-07-21

Full Gauge Milling Bottom Hole Assembly with Optimal Contact Force and Build Rate Capability

#249
20110061941
2011-03-17

Earth removal member with features for facilitating drill-through

#250
20110031035
2011-02-10

Cutter and cutting tool incorporating the same

#251
20110005755
2011-01-13

Downhole casing cutting tool

#252
20110000668
2011-01-06

Through tubing cable rotary system

#253
20100326659
2010-12-30

Wellbore laser operations

#254
20100307736
2010-12-09

Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore

#255
20100276145
2010-11-04

Milling system and method of milling

#256
20100263868
2010-10-21

Tool and method for abrasive formation of openings in downhole structures

#257
20100252265
2010-10-07

Four mill bottom hole assembly

#258
20100243266
2010-09-30

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