ClassID:

135652

E21B43/28 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent

Sub-classes:
Recent Application in this class:
#1
20260139340
2026-05-21

SYSTEMS AND METHODS FOR MONITORING METAL RECOVERY SYSTEMS

#2
20260085599
2026-03-26

SYSTEMS AND METHODS FOR EM-ASSISTED IN-SITU BIOMINING

#3
20260043328
2026-02-12

FLEXIBLE ELECTRODE TUBE FOR ELECTRIFIED RARE EARTH MINING AND APPLICATION METHOD THEREFOR

#4
20260036031
2026-02-05

SYSTEMS AND METHODS FOR LIXIVIANT INJECTION AND ELECTROKINETIC SEQUENCES FOR IN-SITU MINING

#5
20260009103
2026-01-08

SYSTEMS AND METHODS FOR SUBSURFACE METAL RECOVERY

#6
20250333815
2025-10-30

SYSTEMS AND METHODS FOR IMPROVED RAFFINATE INJECTION

#7
20250297542
2025-09-25

CONTROL SYSTEM AND METHOD OF GAS FLOW FOR IN-SITU URANIUM MINING

#8
20250270914
2025-08-28

METHODS AND SYSTEMS FOR STORING HYDROGEN IN A SALT CAVERN

#9
20250092773
2025-03-20

Methods and systems for storing hydrogen in a salt cavern

#10
20250084728
2025-03-13

PRODUCTION SUB INCLUDING A FLUID FLOW ASSEMBLY HAVING A PAIR OF RADIAL BURST DISCS

#11
20250067717
2025-02-27

METHOD TO DESIGN SALT CAVERN FOR CYCLICAL WITHDRAWAL OF GAS

#12
20250051635
2025-02-13

FRICTION REDUCTION OF ACIDIC TREATMENT FLUIDS

#13
20240368975
2024-11-07

LARGE-SCALE CARBON-MINERALIZATION THROUGH OXALATIZATION

#14
20240367100
2024-11-07

METHODS OF CARBON DIOXIDE CAPTURE AND GEOLOGICAL STORAGE

#15
20240191608
2024-06-13

RAPID MINING METHOD FOR SANDSTONE-TYPE URANIUM RESOURCES IN URANIUM AND COAL SUPERPOSED AREA

#16
20240141769
2024-05-02

Water bottom resource collecting system and collecting method

#17
20240124763
2024-04-18

Stimulation of Wells in Nano-Darcy Shale Formations

#18
20240124760
2024-04-18

METHOD TO ATTENUATE ACID REACTIVITY DURING ACID STIMULATION OF CARBONATE RICH RESERVOIRS

#19
20240117707
2024-04-11

Production sub including a fluid flow assembly having a pair of radial burst discs

#20
20240117467
2024-04-11

Electrokinetic device and method for in-situ leaching of uranium

#21
20240035382
2024-02-01

FLUIDIZED COAL MINING METHOD FOR IMPLEMENTING CO2 UNDERGROUND STORAGE

#22
20240026767
2024-01-25

METHOD AND SYSTEM FOR DETERMINING WELL SPACING FOR IN-SITU LEACHING MINING OF HIGH-PERMEABILITY SANDSTONE-TYPE URANIUM/COPPER DEPOSIT

#23
20240026493
2024-01-25

SYSTEMS AND METHODS FOR IMPROVED RAFFINATE INJECTION

#24
20240026492
2024-01-25

SYSTEMS AND METHODS FOR SUBSURFACE METAL RECOVERY

#25
20230358128
2023-11-09

PROCESSES AND CONFIGURATIONS FOR SUBTERRANEAN RESOURCE EXTRACTION

#26
20230323189
2023-10-12

Solvent mixtures for downhole elemental sulfur removal and formation stimulation

#27
20230296205
2023-09-21

METHOD OF ENHANCING METHANE STORAGE CAPACITY IN SALT CAVERNS

#28
20230296003
2023-09-21

METHOD OF ENHANCING CARBON DIOXIDE STORAGE CAPACITY IN SALT CAVERNS

#29
20230294920
2023-09-21

METHOD TO ENHANCE SUBSURFACE GAS STORAGE IN SALT CAVERNS

#30
20230272702
2023-08-31

System and method of using a thermoplastic casing in a wellbore

#31
20230227934
2023-07-20

SYSTEMS AND METHODS FOR MONITORING METAL RECOVERY SYSTEMS

#32
20230203918
2023-06-29

Oil recovery method integrated with the capture, utilization and storage of CO2 through a cavern in saline rock

#33
20230109242
2023-04-06

DOWNHOLE SMART COMPLETION MULTI-ACCESS TOOLS FOR ACID STIMULATION

#34
20230107529
2023-04-06

Osmotic solution mining

#35
20220412202
2022-12-29

Systems and Methods to Increase the Durability of Carbonate Reservoir Acidizing

#36
20220372366
2022-11-24

Sandstone stimulation formulations

#37
20220259695
2022-08-18

Systems and methods for monitoring metal recovery systems

#38
20220195858
2022-06-23

METHOD INCLUDING DOWNHOLE FLOW CONTROL IN SOLUTION MINING

#39
20220135870
2022-05-05

Stimulation of wells in nano-darcy shale formations

#40
20220082018
2022-03-17

Method for expansion of mature brine wells in salt domes

#41
20220003101
2022-01-06

Facility and methods for operating a mine by in-situ leaching

#42
20220003100
2022-01-06

METHOD AND FACILITY FOR OPERATING AN IN-SITU LEACH MINE

#43
20210372257
2021-12-02

Trona solution mining methods and compositions

#44
20210371954
2021-12-02

Method for optimizing liquid injection process of ionic rare earth ore

#45
20210332686
2021-10-28

Systems and methods to increase the durability of carbonate reservoir acidizing

#46
20210254445
2021-08-19

Methods for recovering a mineral from a mineral-bearing deposit

#47
20210254421
2021-08-19

Downhole tool with an acid pill

#48
20210238708
2021-08-05

Systems and methods for monitoring metal recovery systems

#49
20210180438
2021-06-17

Reverse emulsions for cavity control

#50
20210131255
2021-05-06

Processes and configurations for subterranean resource extraction

#51
20210032970
2021-02-04

In-situ leaching mining method and system

#52
20200400006
2020-12-24

Trona solution mining methods and compositions

#53
20200340077
2020-10-29

Recovery of copper from heap leach residues

#54
20200224521
2020-07-16

Trona solution mining methods and compositions

#55
20200165511
2020-05-28

Use of sequestering agent in GLDA-based treatments for siliceous formations

#56
20200148943
2020-05-14

Nanoparticle-based stimulation fluid and methods of use in subterranean formations

#57
20200095856
2020-03-26

Reverse emulsions for cavity control

#58
20200088010
2020-03-19

System and methods for in situ recovery and processing of recovered solutions

#59
20200032135
2020-01-30

Downhole fluids containing cyclic orthoesters and brine and methods for using the same

#60
20200032127
2020-01-30

Methods of controlling fines migration in a well

#61
20190284918
2019-09-19

Brine management system for salt cavern development and operations

#62
20190242241
2019-08-08

Steerable Acid Tunneling System

#63
20190119781
2019-04-25

Systems and methods for monitoring metal recovery systems

#64
20190063202
2019-02-28

SOLUTION MINING USING SUBTERRANEAN DRILLING TECHNIQUES

#65
20190010795
2019-01-10

Methods for deep reservoir stimulation using acid-forming fluids

#66
20180298742
2018-10-18

Reverse emulsions for cavity control

#67
20180274346
2018-09-27

Method of well completion

#68
20180274057
2018-09-27

Systems and methods for monitoring metal recovery systems

#69
20180266201
2018-09-20

VENTURI JET BASKET ASSEMBLY FOR USE IN A WELLBORE AND METHODS FOR USE

#70
20180252087
2018-09-06

A METHOD AND A SYSTEM FOR PERFORMING CHEMICAL TREATMENT OF A NEAR WELLBORE AREA

#71
20180187069
2018-07-05

CHELATING AGENT AND PREPARATION METHOD AND USE THEREOF

#72
20180156020
2018-06-07

Multi-well solution mining exploitation of an evaporite mineral stratum

#73
20180080321
2018-03-22

Apparatus for making underground reservoir

#74
20180058180
2018-03-01

Identification and production of unconventional minerals from geologic formations

#75
20180045029
2018-02-15

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

#76
20180038213
2018-02-08

Solution mining using subterranean drilling techniques

#77
20170356065
2017-12-14

Systems and methods for monitoring metal recovery systems

#78
20170328171
2017-11-16

Well treatment

#79
20170314359
2017-11-02

Dissolvable isolation devices with an altered surface that delays dissolution of the devices

#80
20170072440
2017-03-16

Systems and methods for changing the chemistry in heaps, piles, dumps and components

#81
20170030174
2017-02-02

Method for managing production of hydrocarbons from a subterranean reservoir

#82
20160356140
2016-12-08

Lithological displacement of an evaporite mineral stratum

#83
20160356139
2016-12-08

Batch solution mining using lithological displacement of an evaporite mineral stratum and mineral dissolution with stationary solvent

#84
20160356138
2016-12-08

In situ method for sealing undesirable transverse fractures under hydraulic pressure during lithological displacement of an evaporite deposit

#85
20160341023
2016-11-24

Reverse emulsions for cavity control

#86
20160340572
2016-11-24

Hydrofluoric acid acidizing composition compatible with sensitive metallurgical grades

#87
20160333640
2016-11-17

Real time steerable acid tunneling system

#88
20160289538
2016-10-06

Acidizing with silane treatment to control fines migration in a well

#89
20160280989
2016-09-29

Hydrofluoric acidizing compositions for subsea riser systems and modulating agent for hydrofluoric acidizing composition

#90
20160245049
2016-08-25

Apparatus and method for simulating and/or controlling fluid injection

#91
20160160626
2016-06-09

SOLUTION MINING A STABLE ROOF UNDER AN INERT GAS

#92
20160146964
2016-05-26

Monitoring matrix acidizing operations

#93
20160138379
2016-05-19

SOLUTION MINING UNDER AN INERT GAS

#94
20160115774
2016-04-28

Traveling undercut solution mining systems and methods

#95
20150345267
2015-12-03

Method of forming directionally controlled wormholes in a subterranean formation

#96
20150345266
2015-12-03

Method for treating and producing from a subterranean region

#97
20150330199
2015-11-19

METHOD FOR ENHANCING ACIDIZING TREATMENT OF A FORMATION HAVING A HIGH BOTTOM HOLE TEMPERATURE

#98
20150315893
2015-11-05

Process for recovering soda values from underground soda deposits

#99
20150292311
2015-10-15

CONTROLLED RELEASE OF ACID IN A WELLBORE PENETRATING A CARBONACEOUS FORMATION

#100
20150260025
2015-09-17

Multi-well solution mining exploitation of an evaporite mineral stratum

#101
20150260021
2015-09-17

Chelating agent-based self-diverting acidizing fluids and methods relating thereto

#102
20150159471
2015-06-11

System and method for identifying and producing unconventional minerals from geologic formations

#103
20150145315
2015-05-28

Method and device for building underground storehouse by dissolving limestone with carbon dioxide

#104
20150137578
2015-05-21

Method of exploiting potassium salts from an underground deposit

#105
20150122499
2015-05-07

AQUEOUS SOLUTION AND METHOD FOR USE THEREOF

#106
20150122485
2015-05-07

Aqueous solution and method for use thereof

#107
20150114635
2015-04-30

Process for in situ upgrading of a heavy hydrocarbon using asphaltene precipitant additives

#108
20150000895
2015-01-01

UCG channel

#109
20140357893
2014-12-04

RECOVERY FROM ROCK STRUCTURES AND CHEMICAL PRODUCTION USING HIGH ENTHALPY COLLIDING AND REVERBERATING SHOCK PRESSURE WAVES

#110
20140354032
2014-12-04

Solution mining method with horizontal fluid injection

#111
20140354031
2014-12-04

Solution mining method with elongate sump

#112
20140345871
2014-11-27

Henna Corrosion Inhibitor for Acid in a Well

#113
20140291499
2014-10-02

Mining systems and methods

#114
20140290935
2014-10-02

Stimulation method

#115
20140265520
2014-09-18

Solution mining using subterranean drilling techniques

#116
20140251601
2014-09-11

Modeling acid distribution for acid stimulation of a formation

#117
20140241803
2014-08-28

Apparatus and methods for forming and using subterranean salt cavern

#118
20140234193
2014-08-21

Electrochemical production of metal hydroxide using metal silicates

#119
20140225415
2014-08-14

Traveling undercut solution mining systems and methods

#120
20140191561
2014-07-10

SOLUTION MINING AND A CRYSTALLIZER FOR USE THEREIN

#121
20140174673
2014-06-26

Method for increasing evaporation rate of an evaporative pond

#122
20140142005
2014-05-22

POTASH PROCESSING WITH A VAPOR-COMPRESSION CYCLE

#123
20140014340
2014-01-16

Downhole sleeve system and method

#124
20130331624
2013-12-12

Recovery of hydrocarbons from hydrocarbon-containing materials

#125
20130249272
2013-09-26

SOLUTION MINING AND A CRYSTALLIZER FOR USE THEREIN

#126
20130220607
2013-08-29

Methods of using cellulose in various oilfield applications

#127
20130206425
2013-08-15

Selectively corrodible downhole article and method of use

#128
20130200681
2013-08-08

LIQUID COLLECTION PROCESS WITH SECONDARY CHANNELS FOR IN-SITU LEACHING AN ORE BODY TO EXTRACT RARE EARTH ELEMENTS

#129
20130171048
2013-07-04

Solution mining of ore containing sodium carbonate and bicarbonate

#130
20130161012
2013-06-27

Method of using a non-acidic stimulation fluid in high temperature sandstone formations

#131
20130154338
2013-06-20

Liquid collection process with liquid guiding holes for in-situ leaching an ore body to extract rare earth elements

#132
20130043031
2013-02-21

Manifold string for selectivity controlling flowing fluid streams of varying velocities in wells from a single main bore

#133
20130032545
2013-02-07

METHODS FOR MONITORING AND MODIFYING A FLUID STREAM USING OPTICOANALYTICAL DEVICES

#134
20130032345
2013-02-07

Methods for monitoring fluids within or produced from a subterranean formation during acidizing operations using opticoanalytical devices

#135
20130032340
2013-02-07

Methods for monitoring the formation and transport of an acidizing fluid using opticoanalytical devices

#136
20130032334
2013-02-07

Methods for monitoring the formation and transport of a treatment fluid using opticoanalytical devices

#137
20130031971
2013-02-07

Methods for monitoring fluids within or produced from a subterranean formation during fracturing operations using opticoanalytical devices

#138
20130031970
2013-02-07

Methods for monitoring the formation and transport of a fracturing fluid using opticoanalytical devices

#139
20120255730
2012-10-11

Partial solution mining of hydrocarbon containing layers prior to in situ heat treatment

#140
20120207552
2012-08-16

Submerged void filling

#141
20120205097
2012-08-16

Method of Enhance the Production Capacity of an Oil Well

#142
20120183462
2012-07-19

Electrochemical Production of Metal Hydroxide Using Metal Silicates

#143
20120043801
2012-02-23

Method and apparatus for creating a planar cavern

#144
20120043800
2012-02-23

Method and apparatus for creating a planar cavern

#145
20110298270
2011-12-08

IN SITU ORE LEACHING USING FREEZE BARRIERS

#146
20110293492
2011-12-01

IN SITU PROCESS AND METHOD FOR GROUND WATER REMEDIATION AND RECOVERY OF MINERALS AND HYDROCARBONS

#147
20110263466
2011-10-27

Method of Simultaneously Dissolving Calcium Carbonate, Silica, and Silicate Minerals in Subterranean Formations

#148
20110262987
2011-10-27

Solubilization of Carbonaceous Materials and Conversion to Hydrocarbons and Other Useful Products

#149
20110206459
2011-08-25

Apparatus and methods for forming and using subterranean salt cavern

#150
20110175428
2011-07-21

Solution Mining and a Crystallizer for Use Therein

#151
20110127825
2011-06-02

Traveling undercut solution mining systems and methods

#152
20110062032
2011-03-17

Electrolytic system and method for enhanced release and deposition of sub-surface and surface components

#153
20110005754
2011-01-13

Methods of producing flow-through passages in casing, and methods of using such casing

#154
20100225154
2010-09-09

Method for simultaneously mining vertically disposed beds

#155
20100163233
2010-07-01

System, method and treatment fluid for controlling fines migration

#156
20090236899
2009-09-24

Leach recovery of oil from oil sands and like host materials

#157
20090114385
2009-05-07

Method of stimulating a well

#158
20090000786
2009-01-01

Methods of producing flow-through passages in casing, and methods of using such casing

#159
20080115930
2008-05-22

Electrolytic system and method for enhanced release and deposition of sub-surface and surface components

#160
20060138853
2006-06-29

Apparatus, method and system for single well solution-mining

#161
20060045626
2006-03-02

Manufactured caverns in carbonate rock

#162
20050231022
2005-10-20

Apparatus, method and system for single well solution-mining

#163
20050105971
2005-05-19

Simultaneous development of underground caverns and deposition of materials

#164
18913243
2026-01-06

Scale treatment in geothermal or extremely high temperature wells

#165
18217069
2024-11-12

Friction reduction of acidic treatment fluids

#166
17185356
2025-05-06

Dual-packer injection leaching system and method

#167
16248180
2019-09-24

Trona solution mining methods and compositions

#168
15203651
2017-11-21

Selective mining enhanced recovery process

#169
14279240
2016-12-06

Systems and methods for changing the chemistry in heaps, piles, dumps and components