ClassID:

104353

C09K8/845 - CPC Classification

Classification description:

Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations; Compositions for stimulating production by acting on the underground formation; Compositions based on water or polar solvents containing inorganic compounds

Recent Application in this class:
#1
20260085229
2026-03-26

COMPOSITE DIVERSION PARTICLE AGGLOMERATION

#2
20250389175
2025-12-25

HYDROGEN GENERATION WITHIN HIGH SALINITY HYDROCARBON-BEARING RESERVOIRS

#3
20250236788
2025-07-24

TRACER COMPOSITIONS

#4
20250230352
2025-07-17

SYSTEMS AND METHODS FOR STORING AN ENERGY- STORAGE FLUID WITHIN A SUBTERRANEAN FORMATION HAVING SUPPRESSED MICROBIAL ACTIVITY

#5
20250075116
2025-03-06

Nano-Modified Polymer Injectate for Improving Energy Sweep in Geothermal Reservoirs and Methods of Making

#6
20240384638
2024-11-21

METHODS FOR MAINTAINING THE CONDUCTIVITY OF SUBTERRANEAN FORMATIONS FOLLOWING STIMULATION

#7
20240352829
2024-10-24

CHEMICAL HYDROSTATIC BACKPRESSURE REDUCTION METHODOLOGY TO FLOW FLUIDS THROUGH DISPOSAL WELLS

#8
20240263066
2024-08-08

SMART NANOFLUIDS FOR GEOTHERMAL APPLICATIONS AND METHODS OF USE

#9
20240247184
2024-07-25

PARTICLES FOR CARRIERS AND TRACERS

#10
20240229627
2024-07-11

HYDROGEN PEROXIDE STEAM GENERATOR FOR OILFIELD APPLICATIONS

#11
20240117243
2024-04-11

Aqueous Based, Water-Soluble Polymer Slurry System

#12
20240110090
2024-04-04

COMPOSITE DIVERSION PARTICLE AGGLOMERATION

#13
20240034925
2024-02-01

Enhanced oil recovery with Janus nanoparticles

#14
20230313645
2023-10-05

Enhanced carbon capture and storage

#15
20230313020
2023-10-05

Systems and methods in which colloidal silica gel is used to resist corrosion of a wellhead component in a well cellar

#16
20230242807
2023-08-03

Methods for removing sulfate ions from seawater to form injection fluids

#17
20230151265
2023-05-18

Piperazine-based viscoelastic surfactants for hydraulic fracturing applications

#18
20230151264
2023-05-18

Methods and compositions of using viscoelastic surfactants as diversion agents

#19
20230132097
2023-04-27

Chemical hydrostatic backpressure reduction methodology to flow fluids through disposal wells

#20
20230072927
2023-03-09

Methods for completing a wellbore using high density brine containing colloidal particles

#21
20230065802
2023-03-02

Particles for carriers and tracers

#22
20230023003
2023-01-26

Viscoelastic surfactant-based treatment fluids for use with lost circulation materials

#23
20230020371
2023-01-19

Storable liquid suspension of hollow particles

#24
20220396726
2022-12-15

Monovalent brines for use as wellbore fluids

#25
20220282149
2022-09-08

METHODS AND COMPOSITIONS OF DISPERSIBLE FERROELECTRIC NANOPARTICLES, AND USES THEREOF

#26
20220243120
2022-08-04

Methods for removing sulfate ions from seawater to form injection fluids

#27
20220215230
2022-07-07

Soft-sensor to measure pH of treated seawater

#28
20220177768
2022-06-09

Method of using composite diversion particle agglomerations

#29
20220145160
2022-05-12

Synergistic blends of fluoro-inorganics and inorganic acids for removing deposits and stimulating geothermal wells

#30
20220106515
2022-04-07

Compositions for enhanced oil recovery

#31
20220025248
2022-01-27

Enhanced oil recovery with janus nanoparticles

#32
20210363415
2021-11-25

Degradable diversion material having a polyacrylate compound

#33
20210355373
2021-11-18

Self propping surfactant for well stimulation

#34
20210318456
2021-10-14

Acoustic proppant for fracture diagnostic

#35
20210284901
2021-09-16

Composition and Method for Breaking Friction Reducing Polymer for Well Fluids

#36
20210277303
2021-09-09

Storable liquid suspension of hollow particles

#37
20210277299
2021-09-09

Compositions And Methods For Treating Subterranean Formations

#38
20210269308
2021-09-02

CHLORINE DIOXIDE PRECURSOR AND METHODS OF USING SAME

#39
20210262330
2021-08-26

HYDROGEN PEROXIDE STEAM GENERATOR FOR OILFIELD APPLICATIONS

#40
20210246365
2021-08-12

METHOD OF MONITORING A FLUID, USE OF A TRACER, AND TRACER COMPOSITION

#41
20210238471
2021-08-05

Hydrocarbon formation treatment micellar solutions

#42
20210230470
2021-07-29

Reservoir emplacement of rheologically tuned and timed nanoparticle emulsions

#43
20210189227
2021-06-24

PICKERING EMULSIONS USED IN WELLBORE SERVICING FLUIDS AND METHODS

#44
20210115316
2021-04-22

Temperature stability of polyols and sugar alcohols in brines

#45
20210102114
2021-04-08

Additives to minimize viscosity reduction for guar/borate system under high pressure

#46
20210079283
2021-03-18

Heavy fluid and method of making it

#47
20210062077
2021-03-04

Using brine resistant silicon dioxide nanoparticle dispersions to improve oil recovery

#48
20210040381
2021-02-11

Using brine resistant silicon dioxide nanoparticle dispersions to improve oil recovery

#49
20200399531
2020-12-24

Composition and method for improving performance of friction reducing polymers in high dissolved solids water

#50
20200362219
2020-11-19

Lowering the crystallization temperature of brines

#51
20200308477
2020-10-01

Downhole high temperature rheology control

#52
20200283336
2020-09-10

Hydrating swellable clays

#53
20200255720
2020-08-13

Additives to minimize viscosity reduction for guar/borate system under high pressure

#54
20200231864
2020-07-23

Mitigation of condensate and water banking using functionalized nanoparticles

#55
20200190399
2020-06-18

Self propping surfactant for well stimulation

#56
20200140744
2020-05-07

STIMULATING WELLS USING CO2, WATER BLOCK REMOVING AGENTS, AND/OR BREAKERS TO IMPROVE WELL PRODUCTION

#57
20200123435
2020-04-23

Brine resistant silica sol

#58
20200063015
2020-02-27

COMPOSITE DIVERSION PARTICLE AGGLOMERATION

#59
20200048541
2020-02-13

Methods for controlling conductive aggregates

#60
20200017759
2020-01-16

Binding composition for proppant

#61
20200017756
2020-01-16

Compositions and methods for treating subterranean formations

#62
20200010758
2020-01-09

Thermally-stable, non-precipitating, high-density wellbore fluids

#63
20190382645
2019-12-19

Hydrocarbon formation treatment micellar solutions

#64
20190382643
2019-12-19

METHODS FOR TREATING FRACTURE FACES IN PROPPED FRACTURES USING FINE PARTICULATES

#65
20190300780
2019-10-03

NANOPARTICLE GEL SYSTEMS FOR TREATING CARBONATE FORMATIONS

#66
20190292436
2019-09-26

Chlorine Dioxide Containing Mixtures And Chlorine Dioxide Bulk Treatments For Enhancing Oil And Gas Recovery

#67
20190284466
2019-09-19

Selection of optimal surfactant blends for waterflood enhancement

#68
20190233713
2019-08-01

Engineering formation wettability characteristics

#69
20190225871
2019-07-25

Brine resistant silica sol

#70
20190225542
2019-07-25

Hydrating swellable clays

#71
20190169489
2019-06-06

Formulations comprising recovered water and a viscosifier and associated methods

#72
20190161667
2019-05-30

HIGH DENSITY BRINES

#73
20190136123
2019-05-09

Using brine resistant silicon dioxide nanoparticle dispersions to improve oil recovery

#74
20190127628
2019-05-02

Nanotube mediation of degradative chemicals for oil-field application

#75
20190127623
2019-05-02

Heavy Fluid and Method of Making It

#76
20190119562
2019-04-25

Method of forming a mixture of barite particles, chelating agent and bentonite for fracturing

#77
20190119561
2019-04-25

Method for making a drilling fluid composition and fracturing a subterranean formation

#78
20190062623
2019-02-28

Acoustic proppant for fracture diagnostic

#79
20190023976
2019-01-24

METHOD OF PRODUCING MICRONIZED BARITE PARTICLES

#80
20180362834
2018-12-20

Compositions And Methods For Treating Subterranean Formations

#81
20180347332
2018-12-06

Method of Enhancing Fracture Complexity Using Far-Field Divert Systems

#82
20180327658
2018-11-15

Supercritical carbon dioxide emulsified acid

#83
20180305208
2018-10-25

CHLORINE DIOXIDE PRECURSOR AND METHODS OF USING SAME

#84
20180298266
2018-10-18

Weighted fluids for treatment of subterranean formations

#85
20180291720
2018-10-11

Compositions and methods for controlled delivery of acid

#86
20180291261
2018-10-11

Hydrocarbon formation treatment micellar solutions

#87
20180251671
2018-09-06

Additives to minimize viscosity reduction for guar/borate system under high pressure

#88
20180244985
2018-08-30

Interfacial tension reduction and wettability alteration using metal oxide nanoparticles to reduce condensate banking

#89
20180230362
2018-08-16

Formation Stabilizing Fracturing Fluid and Method of Use

#90
20180171198
2018-06-21

Temperature stability of polyols and sugar alcohols in brines

#91
20180155602
2018-06-07

High Density Brine Containing Colloidal Particles

#92
20180155600
2018-06-07

Hydro-fracking method using an aloe vera fracturing fluid

#93
20180079952
2018-03-22

Colored organic peroxide compositions and methods for breaking fluids

#94
20180030340
2018-02-01

Methods of preparing treatment fluids comprising anhydrous ammonia for use in subterranean formation operations

#95
20180030332
2018-02-01

Nanoparticle modified fluids and methods of manufacture thereof

#96
20180022989
2018-01-25

Treatment fluids comprising anhydrous ammonia for use in subterranean formation operations

#97
20170369759
2017-12-28

Compositions for enhanced oil recovery

#98
20170349813
2017-12-07

Smart fracturing fluid

#99
20170342315
2017-11-30

Systems and methods for removing contaminants from high density completion fluid

#100
20170335178
2017-11-23

SALT-TOLERANT SELF-SUSPENDING PROPPANTS

#101
20170292066
2017-10-12

Synthetic Acid Compositions Alternatives to Conventional Acids in the Oil and Gas Industry

#102
20170292063
2017-10-12

NANOTUBE MEDIATION OF DEGRADATIVE CHEMICALS FOR OIL-FIELD APPLICATIONS

#103
20170247605
2017-08-31

Thermally-stable, non-precipitating, high-density wellbore fluids

#104
20170190955
2017-07-06

Method of fracturing a subterranean formation using micronized barite particles

#105
20170130568
2017-05-11

Triggering an exothermic reaction for reservoirs using microwaves

#106
20170015898
2017-01-19

Environmentally preferable microemulsion composition

#107
20160341022
2016-11-24

METHOD OF TREATING A SUBTERRANEAN FORMATION WITH A MORTAR SLURRY DESIGNED TO FORM A PERMEABLE MORTAR

#108
20160333261
2016-11-17

Enhanced subterranean treatment fluids in ionic water or seawater

#109
20160304772
2016-10-20

Supercritical carbon dioxide emulsified acid

#110
20160304768
2016-10-20

Method and system for the recovery of oil, using water that has been treated using magnetic particles

#111
20160298024
2016-10-13

Aqueous retarded acid solution and methods for use thereof

#112
20160272870
2016-09-22

Aqueous suspensions of silica additives

#113
20160262377
2016-09-15

Polymer compositions

#114
20160244661
2016-08-25

Emulsion system utilizing nitrogen and heat to treat deep water blockage

#115
20160221826
2016-08-04

CHLORINE DIOXIDE PRECURSOR AND METHODS OF USING SAME

#116
20160215602
2016-07-28

Delayed crosslinking composition or reaction product thereof for treatment of a subterranean formation

#117
20160214896
2016-07-28

Block polymers for fluid loss control

#118
20160084051
2016-03-24

IN SITU RECOVERY FROM RESIDUALLY HEATED SECTIONS IN A HYDROCARBON CONTAINING FORMATION

#119
20160060503
2016-03-03

Nanoparticle modified fluids and methods of manufacture thereof

#120
20160047211
2016-02-18

Hydrogen peroxide steam generator for oilfield applications

#121
20160024377
2016-01-28

Systems and methods for removing contaminants from high density completion fluid

#122
20160010441
2016-01-14

Process for producing natural gas and natural gas condensate from underground gas condensate deposits

#123
20160009982
2016-01-14

Use of nano-sized phyllosilicate minerals in viscoelastic surfactant fluids

#124
20150354298
2015-12-10

COMPLETION FLUID

#125
20150337638
2015-11-26

HYDROCARBON STIMULATION BY ENERGETIC CHEMISTRY

#126
20150329764
2015-11-19

Treatment fluids containing a boron trifluoride complex and methods for use thereof

#127
20150307771
2015-10-29

Nano-dispersion well servicing fluid containing a pH adjuster

#128
20150011442
2015-01-08

Method of treating a high-temperature well with a fluid containing a viscosifier and a stabilizer package

#129
20140371114
2014-12-18

Far field diversion technique for treating subterranean formation

#130
20140349897
2014-11-27

Treatment fluids with non-oxidizer class inorganic peroxide polymer breakers and methods of use thereof

#131
20140345870
2014-11-27

Methods for stimulation and stabilization of subterranean formations

#132
20140342952
2014-11-20

Method of treating a high-temperature well with a fluid containing a viscosifier and a stabilizer package

#133
20140321914
2014-10-30

Controlled dewatering of confined, saturated formations in excavation mines

#134
20140262264
2014-09-18

Compositions and methods for increasing fracture conductivity

#135
20140187450
2014-07-03

Internal Breaker for Fluid Loss Control Pills and Method

#136
20140144632
2014-05-29

THERMO-GAS-GENERATING SYSTEMS AND METHODS FOR OIL AND GAS WELL STIMULATION

#137
20140121138
2014-05-01

PROCESS FOR REMOVAL OF ZINC, IRON AND NICKEL FROM SPENT COMPLETION BRINES AND PRODUCED WATER

#138
20140051610
2014-02-20

Environmentally beneficial recycling of brines in the process of reducing friction resulting from turbulent flow

#139
20140000874
2014-01-02

REDUCING SULFIDE IN OIL RESERVOIR PRODUCTION FLUIDS

#140
20130341023
2013-12-26

Use of metal silicides in hydrocarbon production and transportation

#141
20130252857
2013-09-26

Completion fluid

#142
20130248188
2013-09-26

IN-SITU SELF DIVERTING WAG PROCESS

#143
20130210683
2013-08-15

Method for drilling using a drilling and completion fluid comprising a phosphate based blend

#144
20130180720
2013-07-18

Non-acidic exothermic sandstone stimulation fluids

#145
20130180713
2013-07-18

In-situ crosslinking with aluminum carboxylate for acid stimulation of a carbonate formation

#146
20130161012
2013-06-27

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

#147
20130146280
2013-06-13

Microbial enhanced oil recovery process for heavy oil accumulations

#148
20120322700
2012-12-20

Nano-Sized Particles for Stabilizing Viscoelastic Surfactant Fluids

#149
20120261129
2012-10-18

Electromagnetic wave treatment method and promoter

#150
20120244228
2012-09-27

Chlorine dioxide precursor and methods of using same

#151
20120178651
2012-07-12

Clay Stabilization With Nanoparticles

#152
20120157355
2012-06-21

Phosphate based blend for drilling and completion fluid

#153
20120115759
2012-05-10

Treatment fluids containing a boron trifluoride complex and methods for use thereof

#154
20120097392
2012-04-26

Treatment fluids containing biodegradable chelating agents and methods for use thereof

#155
20120048548
2012-03-01

Use of nano-sized phyllosilicate minerals in viscoelastic surfactant fluids

#156
20110303415
2011-12-15

Far field diversion technique for treating subterranean formation

#157
20110290491
2011-12-01

Well servicing fluid

#158
20110287984
2011-11-24

Treatment fluids made of halogenisocyanuric acid and its salts for operations in a well

#159
20110146997
2011-06-23

Formation conditioning fluids comprising peroxides and methods relating thereto

#160
20110077445
2011-03-31

Generating natural gas from heavy hydrocarbons

#161
20110054042
2011-03-03

Polymer compositions

#162
20110000672
2011-01-06

Clay Stabilization with Nanoparticles

#163
20100256023
2010-10-07

Viscosified treatment fluids comprising scleroglucan or diutan and associated methods

#164
20100224366
2010-09-09

Methods of using colloidal silica based gels

#165
20100216673
2010-08-26

Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures

#166
20100200234
2010-08-12

In situ conversion of heavy hydrocarbons to catalytic gas

#167
20090321417
2009-12-31

Floating insulated conductors for heating subsurface formations

#168
20090321075
2009-12-31

Parallel heater system for subsurface formations

#169
20090321071
2009-12-31

Controlling and assessing pressure conditions during treatment of tar sands formations

#170
20090298721
2009-12-03

Friction reducer performance in water containing multivalent ions

#171
20090233818
2009-09-17

Hydrolytically and hydrothermally stable consolidation or change in the wetting behavior of geological formations

#172
20090126929
2009-05-21

Treating nahcolite containing formations and saline zones

#173
20090120646
2009-05-14

ELECTRICALLY ISOLATING INSULATED CONDUCTOR HEATER

#174
20090095480
2009-04-16

In situ heat treatment of a tar sands formation after drive process treatment

#175
20090095479
2009-04-16

Production from multiple zones of a tar sands formation

#176
20090095478
2009-04-16

Varying properties of in situ heat treatment of a tar sands formation based on assessed viscosities

#177
20090095477
2009-04-16

Heating systems for heating subsurface formations

#178
20090095476
2009-04-16

Molten salt as a heat transfer fluid for heating a subsurface formation

#179
20090090509
2009-04-09

In situ recovery from residually heated sections in a hydrocarbon containing formation

#180
20090090158
2009-04-09

Wellbore manufacturing processes for in situ heat treatment processes

#181
20090084547
2009-04-02

Downhole burner systems and methods for heating subsurface formations

#182
20090078461
2009-03-26

Drilling subsurface wellbores with cutting structures

#183
20090071652
2009-03-19

In situ heat treatment from multiple layers of a tar sands formation

#184
20090014179
2009-01-15

In situ conversion of heavy hydrocarbons to catalytic gas

#185
20080300153
2008-12-04

Use of Nano-Sized Clay Minerals in Viscoelastic Surfactant Fluids

#186
20080220992
2008-09-11

Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures

#187
20080115935
2008-05-22

IN SITU CONVERSION OF HEAVY HYDROCARBONS TO CATALYTIC GAS

#188
20080051302
2008-02-28

Nano-sized particles for stabilizing viscoelastic surfactant fluids

#189
20070213233
2007-09-13

Diverting compositions, fluid loss control pills, and breakers thereof

#190
20070135314
2007-06-14

Composition comprising a fully dissolved non-HF fluoride source and method for treating a subterranean formation

#191
20070135312
2007-06-14

Solvent free fluidized polymer suspensions for oilfield servicing fluids

#192
20070111898
2007-05-17

Methods and compositions for treating subterranean zones

#193
20070111897
2007-05-17

Composition and method for thickening heavy aqueous brines with cationic guar

#194
20060258547
2006-11-16

Zeolite-containing remedial compositions

#195
20060205606
2006-09-14

Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures

#196
20060191686
2006-08-31

Methods and compositions for the in-situ thermal stimulation of hydrocarbons using peroxide-generating compounds

#197
20060166837
2006-07-27

Methods of treating subterranean formations with heteropolysaccharides based fluids

#198
20050107265
2005-05-19

Methods for controlling the fluid loss properties of viscoelastic surfactant based fluids

#199
20050072599
2005-04-07

Zeolite-containing remedial compositions

#200
20050061504
2005-03-24

Methods and compositions for treating subterranean zones

#201
18359615
2024-10-29

Methods for removing carbon dioxide from natural gas

#202
18352214
2023-12-19

Structural stabilizer for fiber and conventional proppant complex in efficient proppant migration and placement technology of fractured well and preparation method

#203
17829877
2022-10-25

Invert emulsion drilling fluid containing hydrophobic metallic zinc nanoparticles and method of drilling subterranean geological formation

#204
17829805
2022-10-25

Rhamnolipid stabilized invert emulsion drilling fluid and method of drilling subterranean geological formation