ClassID:

135182

E21B7/14 - CPC Classification

Classification description:

Special methods or apparatus for drilling Drilling by use of heat, e.g. flame drilling

Sub-classes:
Recent Application in this class:
#1
20250327395
2025-10-23

Robotic Excavation Platform

#2
20250320782
2025-10-16

Mass Flow For Non-Contact Boring

#3
20250250865
2025-08-07

METHODS AND APPARATUS FOR BITLESS DRILLING

#4
20250034947
2025-01-30

COOLING FOR GEOTHERMAL WELL DRILLING

#5
20240093590
2024-03-21

METHODS AND SYSTEMS FOR ADAPTIVE NON-CONTACT / CONTACT BORING

#6
20230407706
2023-12-21

MICROWAVE ROCK-BREAKING DRILLING DEVICE

#7
20230304359
2023-09-28

Methods and apparatus for bitless drilling

#8
20230228155
2023-07-20

Cooling for geothermal well drilling

#9
20230203948
2023-06-29

Plasma Drilling System

#10
20220389763
2022-12-08

Methods and systems for adaptive non-contact / contact boring

#11
20220220851
2022-07-14

Tunnel boring system

#12
20220082017
2022-03-17

Method for boring with plasma

#13
20220049592
2022-02-17

System and apparatus for spallation drilling

#14
20210404261
2021-12-30

Tunneling for underground power and pipelines

#15
20210340821
2021-11-04

Laser array drilling tool and related methods

#16
20210310353
2021-10-07

Nuclear power heavy construction, mining and processing apparatus to make Exo-planetary infrastructures operational for enmasse strategic minerals and water mining production

#17
20210262306
2021-08-26

Expended laser tool

#18
20200378233
2020-12-03

System and apparatus for spallation drilling

#19
20200325754
2020-10-15

High power laser flow assurance systems, tools and methods

#20
20200217199
2020-07-09

Tunneling for underground power and pipelines

#21
20190383120
2019-12-19

HIGH POWER LASER FLOW ASSURANCE SYSTEMS, TOOLS AND METHODS

#22
20190178036
2019-06-13

DOWNHOLE LASER SYSTEMS, APPARATUS AND METHODS OF USE

#23
20190085688
2019-03-21

Tunneling for underground power and pipelines

#24
20190055789
2019-02-21

Energy-emitting bits and cutting elements

#25
20180334873
2018-11-22

Compact electrically actuated chemical energy heat source for downhole devices

#26
20180328150
2018-11-15

OILFIELD LASER OPERATIONS USING HIGH POWER LONG DISTANCE LASER TRANSMISSION SYSTEMS

#27
20180283152
2018-10-04

System and apparatus for spallation drilling

#28
20180266183
2018-09-20

Notching a wellbore while drilling

#29
20180066489
2018-03-08

Wellbore plug and abandonment

#30
20170306703
2017-10-26

Hybrid mechanical-laser drilling equipment

#31
20170191314
2017-07-06

Methods and Systems for the Application and Use of High Power Laser Energy

#32
20170051560
2017-02-23

Rotary percussive device

#33
20160299304
2016-10-13

Optical fiber cable for transmission of high power laser energy over great distances

#34
20160251940
2016-09-01

High power laser flow assurance systems, tools and methods

#35
20160222763
2016-08-04

Systems and conveyance structures for high power long distance laser transmission

#36
20160186497
2016-06-30

Electric motor for laser-mechanical drilling

#37
20160160618
2016-06-09

High power laser-fluid guided beam for open hole oriented fracturing

#38
20160153240
2016-06-02

Device for laser drilling

#39
20160090790
2016-03-31

High power laser energy distribution patterns, apparatus and methods for creating wells

#40
20160084008
2016-03-24

Downhole laser systems, apparatus and methods of use

#41
20160017661
2016-01-21

Apparatus for performing oil field laser operations

#42
20150345225
2015-12-03

Multimodal rock disintegration by thermal effect and system for performing the method

#43
20150322738
2015-11-12

Methods and apparatus for removal and control of material in laser drilling of a borehole

#44
20150240564
2015-08-27

Drill with remotely controlled operating modes and system and method for providing the same

#45
20150233206
2015-08-20

CASING, PROCESS OF FORMATION OF CASING IN BOREHOLES BY ADDITIVE METHOD AND DEVICE FOR ITS FORMATION

#46
20150114646
2015-04-30

Triggered heating of wellbore fluids by carbon nanomaterials

#47
20150047901
2015-02-19

Method of Disintegrating Rock by Melting and by Synergism of Water Streams

#48
20140374156
2014-12-25

METHODS OF REDUCING STRESS IN DOWNHOLE TOOLS

#49
20140360778
2014-12-11

Downhole deep tunneling tool and method using high power laser beam

#50
20140305635
2014-10-16

Method for developing oil and gas fields using high-power laser radiation for more complete oil and gas extraction

#51
20140284045
2014-09-25

System and apparatus for geothermal pyrolysis

#52
20140182933
2014-07-03

OPTICAL FEEDBACK TO MONITOR AND CONTROL LASER ROCK REMOVAL

#53
20140151045
2014-06-05

Increasing formation strength through the use of temperature and temperature coupled particulate to increase near borehole hoop stress and fracture gradients

#54
20140060930
2014-03-06

High power laser downhole cutting tools and systems

#55
20140060802
2014-03-06

High power laser workover and completion tools and systems

#56
20140054087
2014-02-27

Drill with remotely controlled operating modes and system and method for providing the same

#57
20140041940
2014-02-13

System and method for drilling in rock using microwaves

#58
20140008124
2014-01-09

Drilling technology utilizing high temperature and low temperature discharges

#59
20130341179
2013-12-26

Production of methane from abundant hydrate deposits

#60
20130175090
2013-07-11

Method and apparatus for delivering high power laser energy over long distances

#61
20130112478
2013-05-09

DEVICE FOR LASER DRILLING

#62
20120273269
2012-11-01

Long distance high power optical laser fiber break detection and continuity monitoring systems and methods

#63
20120267168
2012-10-25

Electric motor for laser-mechanical drilling

#64
20120261188
2012-10-18

METHOD OF HIGH POWER LASER-MECHANICAL DRILLING

#65
20120255774
2012-10-11

High power laser-mechanical drilling bit and methods of use

#66
20120248078
2012-10-04

Control system for high power laser drilling workover and completion unit

#67
20120195334
2012-08-02

Laser material processing tool

#68
20120118568
2012-05-17

Method and apparatus for wellbore perforation

#69
20120074110
2012-03-29

FLUID LASER JETS, CUTTING HEADS, TOOLS AND METHODS OF USE

#70
20120068086
2012-03-22

Systems and conveyance structures for high power long distance laser transmission

#71
20120067643
2012-03-22

TWO-PHASE ISOLATION METHODS AND SYSTEMS FOR CONTROLLED DRILLING

#72
20110303460
2011-12-15

Rock drilling in great depths by thermal fragmentation using highly exothermic reactions evolving in the environment of a water-based drilling fluid

#73
20110290563
2011-12-01

Device for performing deep drillings and method of performing deep drillings

#74
20110278270
2011-11-17

Laser drilling method and system

#75
20110220409
2011-09-15

METHOD AND DEVICE FOR FUSION DRILLING

#76
20110209869
2011-09-01

Method and apparatus to release energy in a well

#77
20110205652
2011-08-25

Transmission of light through light absorbing medium

#78
20110198123
2011-08-18

Apparatus for boring holes in rock mass

#79
20110168443
2011-07-14

Bitless Drilling System

#80
20110120771
2011-05-26

Gas cutting borehole drilling apparatus

#81
20100252324
2010-10-07

Millimeter-wave drilling system

#82
20100224408
2010-09-09

Equipment for excavation of deep boreholes in geological formation and the manner of energy and material transport in the boreholes

#83
20100218993
2010-09-02

Methods and Apparatus for Mechanical and Thermal Drilling

#84
20100215326
2010-08-26

Optical fiber cable for transmission of high power laser energy over great distances

#85
20100089577
2010-04-15

Methods and apparatus for thermal drilling

#86
20100089576
2010-04-15

Methods and Apparatus for Thermal Drilling

#87
20100089574
2010-04-15

Methods and Apparatus for Wellbore Enhancement

#88
20100044106
2010-02-25

Method and apparatus for delivering high power laser energy over long distances

#89
20100044105
2010-02-25

Methods and apparatus for delivering high power laser energy to a surface

#90
20100044104
2010-02-25

Apparatus for advancing a wellbore using high power laser energy

#91
20100044103
2010-02-25

Method and system for advancement of a borehole using a high power laser

#92
20100044102
2010-02-25

Methods and apparatus for removal and control of material in laser drilling of a borehole

#93
20090126235
2009-05-21

Method and device for excavating submerged stratum

#94
20080217058
2008-09-11

Heating device for passage through subterranean asphalt and method of use

#95
20080142265
2008-06-19

Downhole mechanism

#96
20080142263
2008-06-19

Downhole valve mechanism

#97
20080053702
2008-03-06

Assembly and method for determining thermal properties of a formation and forming a liner

#98
20070267220
2007-11-22

Methane extraction method and apparatus using high-energy diode lasers or diode-pumped solid state lasers

#99
20060191684
2006-08-31

Assembly for determining thermal properties of a formation while drilling or perforating

#100
20060185843
2006-08-24

Assembly and method for determining thermal properties of a formation and forming a liner

#101
17830608
2023-08-29

Forming perforation tunnels in a subterranean formation

#102
17487401
2022-10-18

Hybrid perforation tool and methods