ClassID:

135638

E21B43/2405 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection in association with fracturing or crevice forming processes

Recent Application in this class:
#1
20260146523
2026-05-28

METHODS OF FORMING AND MAINTAINING CONDUCTIVE PROPPED FRACTURES IN SAGD AND GEOTHERMAL WELL APPLICATIONS

#2
20260110234
2026-04-23

HYDROGEN PRODUCTION AND SULFUR-CARBON SEQUESTRATION

#3
20260036026
2026-02-05

GEOTHERMAL FIELD MANAGEMENT USING FIBER OPTICS

#4
20260002429
2026-01-01

METHOD FOR COPRODUCTION OF METALS AND HYDROGEN FROM GEOLOGICAL ROCK FORMATIONS BY INJECTING AQUEOUS SOLUTION

#5
20250270912
2025-08-28

METHODS AND SYSTEMS OF CLEAN-UP FOR A FRACTURING FLUID

#6
20250179901
2025-06-05

EXTRACTION AND INTEGRATION OF WASTE HEAT FROM ENHANCED GEOLOGIC HYDROGEN PRODUCTION

#7
20250003320
2025-01-02

Enhanced CO2 fracking operation

#8
20240401450
2024-12-05

BOOSTING WELL PERFORMANCE IN GEOTHERMAL SYSTEMS

#9
20240218771
2024-07-04

METHOD FOR EXTRACTING OIL AND GAS BY USING BOTTOM WATER RESOURCE OF OIL AND GAS RESERVOIR

#10
20240117723
2024-04-11

MOBILIZING HEAVY OIL

#11
20240076964
2024-03-07

System, Method and Apparatus for Creating Electrolysis

#12
20230407737
2023-12-21

Sandstone stimulation

#13
20230392485
2023-12-07

Extraction and integration of waste heat from enhanced geologic hydrogen production

#14
20230323756
2023-10-12

HYDROGEN PRODUCTION AND SULFUR-CARBON SEQUESTRATION

#15
20230167725
2023-06-01

WATER HEATING APPARATUS FOR CONTINUOUS HEATED WATER FLOW AND METHOD FOR USE IN HYDRAULIC FRACTURING

#16
20230149944
2023-05-18

ICE CORE ANALYSIS OF END PIT LAKES

#17
20220397026
2022-12-15

Integrated methods for reducing formation breakdown pressures to enhance petroleum recovery

#18
20220397025
2022-12-15

Integrated methods for reducing formation breakdown pressures to enhance petroleum recovery

#19
20220381123
2022-12-01

Systems and methods for steam fracking

#20
20220243573
2022-08-04

SYSTEMS AND METHODS FOR SUBDIVIDING CHEMICAL FLOW FOR WELL COMPLETION OPERATIONS

#21
20220145739
2022-05-12

Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing

#22
20220127521
2022-04-28

Treatment of subterranean formations

#23
20210381353
2021-12-09

Hybrid stimulation tool and related methods

#24
20210372252
2021-12-02

Laser tool with color applicator

#25
20210363868
2021-11-25

Integrated methods for reducing formation breakdown pressures to enhance petroleum recovery

#26
20210363866
2021-11-25

Methods for wellbore formation using thermochemicals

#27
20210348804
2021-11-11

METHOD FOR A RADIATOR EGS TO HARVEST GEOTHERMAL ENERGY

#28
20210230990
2021-07-29

Steam diverter apparatus and method for controlling steam flow in a well

#29
20210189852
2021-06-24

Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing

#30
20210115760
2021-04-22

Methods for increasing wellbore strength

#31
20200392824
2020-12-17

Hybrid photonic-pulsed fracturing tool and related methods

#32
20200355052
2020-11-12

Methods for recovering petroleum by reducing geological formation break-down pressures

#33
20200308944
2020-10-01

Systems and methods for enhanced hydrocarbon recovery

#34
20200300070
2020-09-24

Method for enhancing hydrocarbon production from unconventional shale reservoirs

#35
20200270976
2020-08-27

Using electromagnetic waves to remove near wellbore damages in a hydrocarbon reservoir

#36
20200182034
2020-06-11

METHOD FOR CREATING BRANCH SEAM WITH TEMPORARY PLUGGING AND PRESSURE BUILDUP USING SUPER ABSORBENT RESIN

#37
20200157413
2020-05-21

Method and process of use of binary compositions for acidizing subterranean formations

#38
20200141217
2020-05-07

Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing

#39
20200095853
2020-03-26

Methods for reducing condensation

#40
20200088020
2020-03-19

Methods for fracturing a formation containing hydrocarbons using an enabler that heats in response to electromagnetic radiation

#41
20200088019
2020-03-19

Downhole tool for fracturing a formation containing hydrocarbons

#42
20190368330
2019-12-05

Horizontal line drive selective solution mining methods

#43
20190368328
2019-12-05

Fracturing treatments in subterranean formations using electrically controlled propellants

#44
20190345802
2019-11-14

Temperature Responsive Fracturing

#45
20190345801
2019-11-14

Temperature responsive fracturing

#46
20190300779
2019-10-03

Fracturing Process

#47
20190292890
2019-09-26

Using electromagnetic waves to remove near wellbore damages in a hydrocarbon reservoir

#48
20190195053
2019-06-27

System, method and apparatus for creating an electrical glow discharge

#49
20190145223
2019-05-16

Methods for increasing wellbore strength

#50
20190048697
2019-02-14

Formation fracturing using heat treatment

#51
20190025169
2019-01-24

Supercritical carbon dioxide fracturing core holder under the influence of pore pressure saturation

#52
20180305600
2018-10-25

EXOTHERMIC REACTANTS FOR USE IN SUBTERRANEAN FORMATION TREATMENT FLUIDS

#53
20180283150
2018-10-04

Method of through-wellbore extraction of subsoil resources

#54
20180274348
2018-09-27

Method of acidizing of subterranean formations in well operations

#55
20180266183
2018-09-20

Notching a wellbore while drilling

#56
20180245440
2018-08-30

Methods for Refracturing a Subterranean Formation

#57
20180209259
2018-07-26

Method for gas extraction alternating oscillating pulse high energy gas extraction with thermal injection

#58
20180187536
2018-07-05

Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing

#59
20180163524
2018-06-14

Downhole wellbore high power laser heating and fracturing stimulation and methods

#60
20180135396
2018-05-17

Method For The Control of Cryogenic Stimulation of Shale Gas Formations

#61
20180127641
2018-05-10

Microbubbles for heat and/or gas generation in subterranean formations

#62
20180010434
2018-01-11

Stimulation of light tight shale oil formations

#63
20170336032
2017-11-23

Use of metal silicides in hydrocarbon production and transportation

#64
20170321529
2017-11-09

System and methods for increasing the permeability of geological formations

#65
20170275526
2017-09-28

SUPERCRITICAL Y-GRADE NGL

#66
20170248305
2017-08-31

SYSTEM FOR GENERATING SUPERHEATED STEAM USING HYDROGEN PEROXIDE

#67
20170234531
2017-08-17

Wellhead gas heater

#68
20170234489
2017-08-17

Use of metal silicides in hydrocarbon production and transportation

#69
20170214213
2017-07-27

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

#70
20170211360
2017-07-27

System, method and apparatus for creating an electrical glow discharge

#71
20170174982
2017-06-22

Temperature-triggered viscosifier for treatment of a subterranean formation

#72
20170145295
2017-05-25

Methods of enhancing and generating microfractures in shale formations

#73
20170130568
2017-05-11

Triggering an exothermic reaction for reservoirs using microwaves

#74
20170122087
2017-05-04

System and methods for increasing the permeability of geological formations

#75
20170089850
2017-03-30

Device and method for measuring supercritical carbon dioxide fracturing fluid throttling coefficient under different viscosities

#76
20170089188
2017-03-30

Method of gas, oil, and mineral production using a clean process system and method

#77
20170067329
2017-03-09

Producing hydrocarbons from a subsurface formation

#78
20170022793
2017-01-26

Method for enhancing hydrocarbon production from unconventional shale reservoirs

#79
20160376884
2016-12-29

Well testing through a generated exothermic reaction in the wellbore

#80
20160369606
2016-12-22

Oilfield surface equipment cooling system

#81
20160341020
2016-11-24

Formation fracturing using heat treatment

#82
20160319644
2016-11-03

Method for extracting methane from coal beds and from penetrating rock enclosing a coal bed

#83
20160319182
2016-11-03

Compositions for enhanced fracture cleanup using redox treatment

#84
20160305222
2016-10-20

Wellhead Gas Heater

#85
20160297934
2016-10-13

Thickening compositions, and related materials and processes

#86
20160281482
2016-09-29

CIRCULATED HEATED TRANSFER FLUID HEATING OF SUBSURFACE HYDROCARBON FORMATIONS

#87
20160273325
2016-09-22

Laser cutting with convex deflector

#88
20160268753
2016-09-15

Compaction of electrical insulation for joining insulated conductors

#89
20160265326
2016-09-15

Generating and maintaining conductivity of microfractures in tight formations by generating gas and heat

#90
20160264859
2016-09-15

Composition for enhanced fracture cleanup using redox treatment

#91
20160186548
2016-06-30

Enhanced Subterranean Resource Recovery

#92
20160145987
2016-05-26

Method of recovering hydrocarbons within a subsurface formation using electric current

#93
20160145986
2016-05-26

Mitigating the effects of subsurface shunts during bulk heating of a subsurface formation

#94
20160145985
2016-05-26

Pyrolysis to pressurise oil formations

#95
20160138378
2016-05-19

System and Method to Initiate Permeability in Bore Holes Without Perforating Tools

#96
20160130925
2016-05-12

In-Situ Conversion Process for Oil Shale

#97
20160108713
2016-04-21

SYSTEM AND METHOD OF TREATING A SUBTERRANEAN FORMATION

#98
20160084054
2016-03-24

Method of gas, oil and mineral production using a clean processing system and method

#99
20160076350
2016-03-17

Method and process for extracting shale oil and gas by fracturing and chemical retorting in oil shale in-situ horizontal well

#100
20160053991
2016-02-25

Dual fuel burner

#101
20160053596
2016-02-25

High power dense down-hole heating device for enhanced oil, natural gas, hydrocarbon, and related commodity recovery

#102
20160053581
2016-02-25

Wellhead gas separator system

#103
20160053580
2016-02-25

Wellhead gas heater

#104
20160040519
2016-02-11

System and method for facilitating subterranean hydrocarbon extraction with electrochemical processes

#105
20160032175
2016-02-04

Method For Coating A Well Treatment Chemical

#106
20150354859
2015-12-10

Method for a radiator EGS to harvest geothermal energy

#107
20150337638
2015-11-26

HYDROCARBON STIMULATION BY ENERGETIC CHEMISTRY

#108
20150300142
2015-10-22

Method for enhanced fracture cleanup using redox treatment

#109
20150285049
2015-10-08

Method of Drilling for and Producing Oil and Gas from Earth Boreholes

#110
20150175879
2015-06-25

Tight gas stimulation by in-situ nitrogen generation

#111
20150152321
2015-06-04

HETEROGENEOUS PROPPANT PLACEMENT

#112
20150129209
2015-05-14

Methods and systems for causing reaction driven cracking in subsurface rock formations

#113
20150129162
2015-05-14

Pool, large tank, or pond exchanger

#114
20150128880
2015-05-14

Frac and storage tank exchanger

#115
20150114636
2015-04-30

IN SITU UPGRADING VIA HOT FLUID INJECTION

#116
20150114623
2015-04-30

Pulsed fracturing method and apparatus

#117
20150101807
2015-04-16

Fracturing fluid for secondary gas production

#118
20150090457
2015-04-02

Selective removal of silica from silica containing brines

#119
20150088427
2015-03-26

Method for hydrocarbon recovery with change detection and related apparatus

#120
20150083235
2015-03-26

Hydraulic fracturing system and method

#121
20140251596
2014-09-11

SINGLE VERTICAL OR INCLINED WELL THERMAL RECOVERY PROCESS

#122
20140096959
2014-04-10

ENHANCED HYDROCARBON RECOVERY FROM MULTIPLE WELLS BY STEAM INJECTION OF OIL SAND FORMATIONS

#123
20140060814
2014-03-06

Pulse fracturing device and method

#124
20140054026
2014-02-27

Air release assembly for use with providing heated water for well related activities

#125
20140048268
2014-02-20

Method for hydraulically fracturing a well using an oil-fired frac water heater

#126
20130292114
2013-11-07

Methods For Containment and Improved Recovery in Heated Hydrocarbon Containing Formations By Optimal Placement of Fractures and Production Wells

#127
20130269935
2013-10-17

TREATING HYDROCARBON FORMATIONS USING HYBRID IN SITU HEAT TREATMENT AND STEAM METHODS

#128
20130264058
2013-10-10

TREATMENT METHODS FOR NAHCOLITIC OIL SHALE FORMATIONS WITH FRACTURES

#129
20130247842
2013-09-26

Method for heating treatment fluid using an oil-fired frac water heater

#130
20130213637
2013-08-22

MICROWAVE SYSTEM AND METHOD FOR INTRINSIC PERMEABILITY ENHANCEMENT AND EXTRACTION OF HYDROCARBONS AND/OR GAS FROM SUBSURFACE DEPOSITS

#131
20130118737
2013-05-16

Method for initiating circulation for steam assisted gravity drainage

#132
20130068462
2013-03-21

Increased resource recovery by inorganic and organic reactions and subsequent physical actions that modify properties of the subterranean formation which reduces produced water waste and increases resource utilization via stimulation of biogenic methane generation

#133
20120279713
2012-11-08

Pulse fracturing device and method

#134
20120160495
2012-06-28

Thermal recovery of shallow bitumen through increased permeability inclusions

#135
20110127033
2011-06-02

Single well dual/multiple horizontal fracture stimulation for oil production

#136
20110108277
2011-05-12

Formation treatment using electromagnetic radiation

#137
20110011592
2011-01-20

PULSE FRACTURING DEVICE AND METHOD

#138
20100282460
2010-11-11

Converting organic matter from a subterranean formation into producible hydrocarbons by controlling production operations based on availability of one or more production resources

#139
20100224368
2010-09-09

Deployment of insulated conductors for treating subsurface formations

#140
20100206570
2010-08-19

Circulated heated transfer fluid systems used to treat a subsurface formation

#141
20100200232
2010-08-12

Process for dispersing nanocatalysts into petroleum-bearing formations

#142
20100155070
2010-06-24

ORGANONITROGEN COMPOUNDS USED IN TREATING HYDROCARBON CONTAINING FORMATIONS

#143
20100147522
2010-06-17

Systems and methods for treating a subsurface formation with electrical conductors

#144
20100147521
2010-06-17

Perforated electrical conductors for treating subsurface formations

#145
20100108379
2010-05-06

Systems and methods of forming subsurface wellbores

#146
20100108310
2010-05-06

Offset barrier wells in subsurface formations

#147
20100101794
2010-04-29

Heating subsurface formations with fluids

#148
20100101793
2010-04-29

Electrically Conductive Methods For Heating A Subsurface Formation To Convert Organic Matter Into Hydrocarbon Fluids

#149
20100101790
2010-04-29

Cyclic steam stimulation method with multiple fractures

#150
20100101784
2010-04-29

Controlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation

#151
20100101783
2010-04-29

USING SELF-REGULATING NUCLEAR REACTORS IN TREATING A SUBSURFACE FORMATION

#152
20100096137
2010-04-22

Circulated heated transfer fluid heating of subsurface hydrocarbon formations

#153
20100089586
2010-04-15

Movable heaters for treating subsurface hydrocarbon containing formations

#154
20100089584
2010-04-15

Double insulated heaters for treating subsurface formations

#155
20100078169
2010-04-01

Methods of Treating Suberranean Formation To Convert Organic Matter Into Producible Hydrocarbons

#156
20100000508
2010-01-07

Oil-fired frac water heater

#157
20090294121
2009-12-03

Pulse fracturing device and method

#158
20090266547
2009-10-29

Enzyme enhanced oil recovery (EEOR) for near wellbore treatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production

#159
20090250215
2009-10-08

Method for induced production of petroleum by means of horizontal fractures

#160
20090200032
2009-08-13

System, method and apparatus for creating an electrical glow discharge

#161
20090159277
2009-06-25

Enhanced Hydrocarbon Recovery by in Situ Combustion of Oil Sand Formations

#162
20090101347
2009-04-23

Thermal recovery of shallow bitumen through increased permeability inclusions

#163
20090050325
2009-02-26

Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production

#164
20090038795
2009-02-12

Hydrocarbon recovery from impermeable oil shales using sets of fluid-heated fractures

#165
20080265654
2008-10-30

Microwave process for intrinsic permeability enhancement and Hydrocarbon extraction from subsurface deposits

#166
20080217008
2008-09-11

Process for dispersing nanocatalysts into petroleum-bearing formations

#167
20080173443
2008-07-24

Methods of treating a subterranean formation to convert organic matter into producible hydrocarbons

#168
20080164030
2008-07-10

Process for two-step fracturing of subsurface formations

#169
20070199712
2007-08-30

ENHANCED HYDROCARBON RECOVERY BY STEAM INJECTION OF OIL SAND FORMATIONS

#170
20070199711
2007-08-30

ENHANCED HYDROCARBON RECOVERY BY VAPORIZING SOLVENTS IN OIL SAND FORMATIONS

#171
20070199710
2007-08-30

ENHANCED HYDROCARBON RECOVERY BY CONVECTIVE HEATING OF OIL SAND FORMATIONS

#172
20070199706
2007-08-30

ENHANCED HYDROCARBON RECOVERY BY CONVECTIVE HEATING OF OIL SAND FORMATIONS

#173
20070199704
2007-08-30

Hydraulic feature initiation and propagation control in unconsolidated and weakly cemented sediments

#174
20070199702
2007-08-30

Enhanced hydrocarbon recovery by in situ combustion of oil sand formations

#175
20070199699
2007-08-30

Enhanced Hydrocarbon Recovery By Vaporizing Solvents in Oil Sand Formations

#176
20070199698
2007-08-30

Enhanced hydrocarbon recovery by steam injection of oil sand formations

#177
20070199697
2007-08-30

ENHANCED HYDROCARBON RECOVERY BY STEAM INJECTION OF OIL SAND FORMATIONS

#178
20070023186
2007-02-01

Hydrocarbon recovery from impermeable oil shales

#179
20070000662
2007-01-04

Methods of treating a subterranean formation to convert organic matter into producible hydrocarbons

#180
20060289536
2006-12-28

Subsurface electrical heaters using nitride insulation

#181
20060162923
2006-07-27

Method for producing viscous hydrocarbon using incremental fracturing

#182
20060005968
2006-01-12

Temperature limited heaters with relatively constant current

#183
20050269313
2005-12-08

Temperature limited heaters with high power factors

#184
20050269095
2005-12-08

Inhibiting reflux in a heated well of an in situ conversion system

#185
20050269094
2005-12-08

Triaxial temperature limited heater

#186
20050269093
2005-12-08

Variable frequency temperature limited heaters

#187
20050269092
2005-12-08

Vacuum pumping of conductor-in-conduit heaters

#188
20050269091
2005-12-08

Reducing viscosity of oil for production from a hydrocarbon containing formation

#189
20050269090
2005-12-08

Temperature limited heaters with thermally conductive fluid used to heat subsurface formations

#190
20050269089
2005-12-08

Temperature limited heaters using modulated DC power

#191
20050269088
2005-12-08

Inhibiting effects of sloughing in wellbores

#192
20050269077
2005-12-08

Start-up of temperature limited heaters using direct current (DC)

#193
19037972
2025-12-16

Thermal responsive fluid injection method

#194
15885075
2019-02-12

Methods for recovering light hydrocarbons from brittle shale using micro-fractures and low-pressure steam