ClassID:

104255

C09K8/03 - 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; Well-drilling compositions Specific additives for general use in well-drilling compositions

Sub-classes:
Recent Application in this class:
#1
20250346561
2025-11-13

TRACERS FOR PETROLEUM RESERVOIRS

#2
20250230096
2025-07-17

INDUSTRIAL FLUIDS WITH DILUTION RESISTANCE AND TUNABLE VISCOSITY, AND METHODS OF MAKING AND USING INDUSTRIAL FLUIDS

#3
20250179343
2025-06-05

BIODEGRADABLE SURFACTANT FLUID LOSS CONTROL ADDITIVE

#4
20240308962
2024-09-19

TRACERS FOR PETROLEUM RESERVOIRS

#5
20240067606
2024-02-29

TRACERS FOR PETROLEUM RESERVOIRS

#6
20240059948
2024-02-22

EXTENDED RELEASE ASPHALTENE INHIBITOR COMPOSITION

#7
20230407164
2023-12-21

Water-Based Anionic Friction Reducer

#8
20230374369
2023-11-23

Nanoparticle carrier platform and methods for controlled release of subterranean well treatment additives

#9
20230184099
2023-06-15

Tracers for petroleum reservoirs

#10
20230137391
2023-05-04

ORGANOPHILIC CLAYS AND DRILLING FLUIDS CONTAINING THEM

#11
20230102592
2023-03-30

Chemical compositions and in-situ methods of using same for remediating sulfur-containing compositions and other contaminants in fluids being extracted from the earth

#12
20230092055
2023-03-23

NMR LOGGING METHOD USING SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES

#13
20230028498
2023-01-26

Drilling fluid compositions containing superparamagnetic nanoparticles

#14
20230021923
2023-01-26

OPTICAL SWELL METERS AND METHODS OF USING SAME

#15
20220340808
2022-10-27

Viscoelastic surfactant fluid composition, and method of using the same

#16
20220325169
2022-10-13

MULTIFUNCTIONAL ADDITIVE FOR USE IN WELLBORE SERVICING

#17
20220170363
2022-06-02

Tracers for petroleum reservoirs

#18
20220170362
2022-06-02

TRACERS FOR PETROLEUM RESERVOIRS

#19
20220127954
2022-04-28

Acoustic imaging agent

#20
20220098469
2022-03-31

Nanoparticle carrier platform and methods for controlled release of subterranean well treatment additives

#21
20220098467
2022-03-31

Combination of fluid loss control additive and lost circulation materials to control losses in formation

#22
20220073806
2022-03-10

High density, low TCT divalent brines and uses thereof

#23
20210395595
2021-12-23

Downhole fluids with high dielectric constant and high dielectric strength

#24
20210363400
2021-11-25

Synthetic layered magnesium silicates and their derivatives for high performance oil-based drilling fluids

#25
20210340432
2021-11-04

Methods of Using Delayed Release Well Treatment Composititions

#26
20210238974
2021-08-05

Downhole acid injection to stimulate formation production

#27
20210238471
2021-08-05

Hydrocarbon formation treatment micellar solutions

#28
20210230474
2021-07-29

Methods for producing seawater based, high temperature viscoelastic surfactant fluids with low scaling tendency

#29
20210230468
2021-07-29

Non-toxic high-density fluid for completion applications

#30
20210189215
2021-06-24

Viscosity modifying, demulsifier and flow improver composition, its manufacturing process, its uses and method for increasing production in heavy and extra-heavy crude oil wells

#31
20210140306
2021-05-13

Acoustic imaging agent

#32
20210122967
2021-04-29

Fluid diversion composition in well stimulation

#33
20210087459
2021-03-25

Combination of fluid loss control additive and lost circulation materials to control losses in formation

#34
20210087452
2021-03-25

Fibrous lost circulation material (LCM)

#35
20210071497
2021-03-11

Sphere-shaped lost circulation material (LCM) having hooks and latches

#36
20210071064
2021-03-11

Sphere-shaped lost circulation material (LCM) having straight protrusions

#37
20210047554
2021-02-18

Organophilic clays and drilling fluids containing them

#38
20210032525
2021-02-04

Spacer fluids and cement slurries that include surfactants

#39
20200407620
2020-12-31

Method and materials to convert a drilling mud into a solid gel based lost circulation material

#40
20200407619
2020-12-31

Rapidly dehydrating lost circulation material (LCM)

#41
20200369936
2020-11-26

Multi-functional weighting agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof

#42
20200362231
2020-11-19

LOW-PHOSPHORUS AND NON-PHOSPHORUS GELLED HYDROCARBON WELL TREATMENT FLUIDS

#43
20200339864
2020-10-29

Nanoparticle carrier platform and methods for controlled release of subterranean well treatment additives

#44
20200308467
2020-10-01

Reversible aminal gel compositions, methods, and use

#45
20200291285
2020-09-17

Development of retarded acid system

#46
20200255715
2020-08-13

High density, low TCT monovalent brines and uses thereof

#47
20200255334
2020-08-13

Industrial fluids with dilution resistance and tunable viscosity, and methods of making and using industrial fluids

#48
20200248061
2020-08-06

Lubricants for water-based drilling fluids

#49
20200248060
2020-08-06

Fibrous lost circulation material (LCM)

#50
20200231858
2020-07-23

Hydrophilic and hydrophobic superparamagnetic FeOnanoparticles as T-contrast agents for oil reservoir applications

#51
20200224530
2020-07-16

Contrast enhancement agents for subterranean treatment fluids

#52
20200216739
2020-07-09

Additive to enhance sag stability of drilling fluid

#53
20200208037
2020-07-02

Method and materials to convert a drilling mud into a solid gel based lost circulation material

#54
20200165504
2020-05-28

Spacer fluid compositions that include surfactants

#55
20200140746
2020-05-07

Methods for producing seawater based, high temperature viscoelastic surfactant fluids with low scaling tendency

#56
20200140739
2020-05-07

Methods of using drilling fluid compositions with enhanced rheology

#57
20200131432
2020-04-30

Method of removing oil-based barite filter cake

#58
20200131422
2020-04-30

High density, low TCT monovalent brines and uses thereof

#59
20200123435
2020-04-23

Brine resistant silica sol

#60
20200115625
2020-04-16

Using polyaminated fatty acid-based oil compositions for controlling dust from additive particles

#61
20200087560
2020-03-19

Emulsifier compositions for invert emulsion fluids and methods of using the same

#62
20200071591
2020-03-05

Synthetic functionalized additives, methods of synthesizing, and methods of use

#63
20200071589
2020-03-05

Synthetic layered magnesium silicates and their derivatives for high performance oil-based drilling fluids

#64
20200040247
2020-02-06

Development of anti-bit balling fluids

#65
20200024498
2020-01-23

Methods and systems for using elastocaloric materials in subterranean formations

#66
20200017758
2020-01-16

Methods for producing seawater based, high temperature viscoelastic surfactant fluids with low scaling tendency

#67
20200017757
2020-01-16

Methods for producing seawater based, high temperature viscoelastic surfactant fluids with low scaling tendency

#68
20190382645
2019-12-19

Hydrocarbon formation treatment micellar solutions

#69
20190375977
2019-12-12

Chemical plugs for preventing wellbore treatment fluid losses

#70
20190367794
2019-12-05

Reversible aminal gel compositions, methods, and use

#71
20190360326
2019-11-28

Chemically tagged drilling fluid additives

#72
20190359877
2019-11-28

Reversible aminal gel compositions, methods, and use

#73
20190353307
2019-11-21

Kinetic hydrate inhibitors for controlling gas hydrate formation in wet gas systems

#74
20190352554
2019-11-21

Reversible aminal gel compositions, methods, and use

#75
20190323304
2019-10-24

Downhole in-situ heat generation to remove filtercake

#76
20190323303
2019-10-24

Downhole in-situ heat generation to remove filtercake

#77
20190309212
2019-10-10

Chemical plugs for preventing wellbore treatment fluid losses

#78
20190307153
2019-10-10

Synthetic base and associated methods

#79
20190292439
2019-09-26

Stabilized nanoparticle compositions comprising ions

#80
20190292432
2019-09-26

Spacer fluid compositions, methods, and systems for aqueous based drilling mud removal

#81
20190292431
2019-09-26

Spacer fluid compositions, methods, and systems for aqueous based drilling mud removal

#82
20190264092
2019-08-29

Stabilized nanoparticle compositions comprising ions

#83
20190256758
2019-08-22

High densitiy clear brine fluids

#84
20190233708
2019-08-01

Enhanced filtration control packages, wellbore servicing fluids utilizing the same, and methods of maintaining the structure of a wellbore

#85
20190233707
2019-08-01

Enhanced filtration control packages, wellbore servicing fluids utilizing the same, and methods of maintaining the structure of a wellbore

#86
20190233704
2019-08-01

Downhole fluids with high dielectric constant and high dielectric strength

#87
20190226326
2019-07-25

Tracers for petroleum reservoirs

#88
20190225872
2019-07-25

Polysaccharide coated nanoparticle compositions comprising ions

#89
20190225871
2019-07-25

Brine resistant silica sol

#90
20190218907
2019-07-18

Tracers for petroleum reservoirs

#91
20190218871
2019-07-18

ARC perm-squeeze RDF—a permeable plug forming rapidly dehydrating fluid

#92
20190218870
2019-07-18

ARC perm-squeeze RDF—a permeable plug forming rapidly dehydrating fluid

#93
20190218869
2019-07-18

ARC perm-squeeze RDF—a permeable plug forming rapidly dehydrating fluid

#94
20190203106
2019-07-04

Polysaccharide coated nanoparticle compositions comprising ions

#95
20190203105
2019-07-04

Polysaccharide coated nanoparticle compositions comprising ions

#96
20190203096
2019-07-04

Cement slurries, cured cements and methods of making and use thereof

#97
20190203095
2019-07-04

Cement slurries, cured cements and methods of making and use thereof

#98
20190177606
2019-06-13

METHODS AND MATERIALS FOR GENERATING CONDUCTIVE CHANNELS WITHIN FRACTURE GEOMETRY

#99
20190161670
2019-05-30

Fluid diversion composition in well stimulation

#100
20190112516
2019-04-18

Non-toxic high-density fluid for completion applications

#101
20190112515
2019-04-18

Beneficiating weighting agents

#102
20190031951
2019-01-31

Methods and materials for controlled release of desired chemistries

#103
20190024488
2019-01-24

Accelerated interval communication using openholes

#104
20190023964
2019-01-24

Additive to enhance sag stability of drilling fluid

#105
20190016947
2019-01-17

Composition and method for removing oil-based filter cake

#106
20180371306
2018-12-27

Downhole fluids with a particular impedance

#107
20180355236
2018-12-13

Surfactants for use in liquid suspensions of lightweight beads

#108
20180355235
2018-12-13

Modification of bentonite properties for drilling fluids

#109
20180347279
2018-12-06

Methods of mitigating bituminous material adhesion using nano-particles

#110
20180340109
2018-11-29

Rapidly dehydrating lost circulation material (LCM)

#111
20180320059
2018-11-08

Polysaccharide coated nanoparticle compositions comprising ions

#112
20180320053
2018-11-08

Chemical plugs for preventing wellbore treatment fluid losses

#113
20180305604
2018-10-25

Electrolytic system and method for processing a hydrocarbon source

#114
20180291261
2018-10-11

Hydrocarbon formation treatment micellar solutions

#115
20180283173
2018-10-04

Process for developing a subterranean formation by injection of a fluid comprising an additive labelled with a luminescent semiconducting nanocrystal

#116
20180273826
2018-09-27

Conveyance of ambient-reactive subterranean formation additives to downhole locations

#117
20180273823
2018-09-27

Colloidal dispersions (sols) for weighting agents in fluids

#118
20180265760
2018-09-20

Hollow hydrogel capsules and methods of using the same

#119
20180258757
2018-09-13

Acoustic imaging agent

#120
20180258340
2018-09-13

Core-shell triggered release systems

#121
20180258335
2018-09-13

ENVIRONMENTALLY FRIENDLY, NON-CLAY, AQUEOUS-BASED, BORATE CROSS-LINKER SLURRIES USING BORON-CONTAINING MINERALS

#122
20180244972
2018-08-30

Use of alkali metal silicates during formulation of drilling fluids

#123
20180238168
2018-08-23

Contrast enhancement agents for subterranean treatment fluids

#124
20180237680
2018-08-23

Core-shell particles for treatment of subterranean formations

#125
20180237679
2018-08-23

High density, low TCT divalent brines and uses thereof

#126
20180223180
2018-08-09

Wrinkled capsules for treatment of subterranean formations

#127
20180215991
2018-08-02

Stabilized carbon nanotube suspensions

#128
20180215986
2018-08-02

High density, low TCT monovalent brines and uses thereof

#129
20180208821
2018-07-26

Sol-gel modified particulates for wellbore fluids

#130
20180171211
2018-06-21

Nanoparticle carrier platform and methods for controlled release of subterranean well treatment additives

#131
20180155604
2018-06-07

Organophilic clays and drilling fluids containing them

#132
20180155599
2018-06-07

Rapidly dehydrating lost circulation material (LCM)

#133
20180155597
2018-06-07

Controlled release system for the release of oil field chemicals and use of the system for reservoir treatment and monitoring

#134
20180135403
2018-05-17

Method of using controlled release tracers

#135
20180134939
2018-05-17

METHOD OF USING CROSSLINKED WELL TREATMENT AGENTS FOR SLOW RELEASE INTO WELL

#136
20180127634
2018-05-10

Reversible aminal gel compositions, methods, and use

#137
20180072939
2018-03-15

Method of using shaped compressed pellets in well treatment operations

#138
20180038178
2018-02-08

Running fluid for use in a subterranean formation operation

#139
20180037792
2018-02-08

Methods and compositions for use in oil and/or gas wells

#140
20180037791
2018-02-08

Beneficiating weighting agents

#141
20180030340
2018-02-01

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

#142
20180022984
2018-01-25

Activators for inorganic oxide breakers

#143
20180022980
2018-01-25

Use of CSH-seed modified fibers in oil field applications

#144
20180016886
2018-01-18

Methods for fracturing formations using aggregating compositions

#145
20180016484
2018-01-18

HIGH DENSITY CLEAR BRINE FLUIDS

#146
20170370816
2017-12-28

Method and apparatus for selecting surfactants

#147
20170362924
2017-12-21

Method of chemically delaying peroxygen based viscosity reduction reactions

#148
20170355895
2017-12-14

Activity enhanced scale dispersant for treating inorganic sulfide scales

#149
20170350236
2017-12-07

Method of monitoring fluid flow from a reservoir using well treatment agents

#150
20170342786
2017-11-30

Lost circulation materials comprising red mud

#151
20170342306
2017-11-30

Well treatments for diversion or zonal isolation

#152
20170335660
2017-11-23

Drilling fluid disposal injection system and method

#153
20170335178
2017-11-23

SALT-TOLERANT SELF-SUSPENDING PROPPANTS

#154
20170335161
2017-11-23

Reversible aminal gel compositions, methods, and use

#155
20170334777
2017-11-23

Industrial fluids with dilution resistance and tunable viscosity, and methods of making and using industrial fluids

#156
20170313925
2017-11-02

Oxidative breakers in a silicone based suspension

#157
20170283678
2017-10-05

Modification of bentonite properties for drilling fluids

#158
20170253788
2017-09-07

Methods of zonal isolation and treatment diversion with shaped particles

#159
20170253784
2017-09-07

Wellbore methods employing precipitated particles

#160
20170252716
2017-09-07

SURFACE MODIFICATION AGENT FOR CONTROL OF DUST FROM ADDITIVE PARTICLES

#161
20170248276
2017-08-31

Kinetic hydrate inhibitors for controlling gas hydrate formation in wet gas systems

#162
20170247594
2017-08-31

Spray dried emulsifier compositions, methods for their preparation, and their use in oil-based drilling fluid compositions

#163
20170241261
2017-08-24

Formation stabilization workflow

#164
20170218248
2017-08-03

Reversible aminal gel compositions, methods, and use

#165
20170218246
2017-08-03

Methods for replenishing particles screened from drilling fluids

#166
20170172143
2017-06-22

Choline chloride in liquid guar formulations

#167
20170167211
2017-06-15

Downhole in-situ heat generation to remove filtercake

#168
20170158938
2017-06-08

Downhole fluids with high dielectric constant and high dielectric strength

#169
20170145299
2017-05-25

Metal-organic frameworks as porous proppants

#170
20170137687
2017-05-18

Downhole fluids with a particular impedance

#171
20170130571
2017-05-11

On-the-fly production of materials for treatment of a well

#172
20170121586
2017-05-04

Polymer-based drilling fluids containing non-biodegradable materials and methods for use thereof

#173
20170073574
2017-03-16

Methods of producing particles having two different properties

#174
20170073564
2017-03-16

Methods and compositions for use in oil and/or gas wells

#175
20170015896
2017-01-19

Stabilized nanoparticle compositions comprising ions

#176
20170015895
2017-01-19

Polysaccharide coated nanoparticle compositions comprising ions

#177
20160362600
2016-12-15

DISINTEGRATING UNIT DOSE POD FOR WELL SERVICING FLUIDS

#178
20160362596
2016-12-15

Compositions and methods for filter cake removal

#179
20160356919
2016-12-08

Methods and apparatuses for deriving wellbore fluid sag from thermal conductivity measurements

#180
20160340570
2016-11-24

Graphene enhanced polymer composites and methods thereof

#181
20160340516
2016-11-24

Methods and systems for protecting acid-reactive substances

#182
20160333247
2016-11-17

Multi-modal particle size distribution lost circulation material

#183
20160331006
2016-11-17

Synthetic base and associated methods

#184
20160326421
2016-11-10

FLUID COMPOSITIONS AND METHODS OF USING NANOMATERIAL HYBRIDS

#185
20160312551
2016-10-27

MEMS-lost circulation materials for evaluating fluid loss and wellbore strengthening during a drilling operation

#186
20160304771
2016-10-20

Hydrophobizing agents comprising an oligomeric polyamine and methods for coating particulates therewith

#187
20160298028
2016-10-13

Wellbore servicing materials and methods of making and using same

#188
20160298015
2016-10-13

Solid invert emulsion drilling fluid additives, methods of preparation and use in oil-based drilling fluids

#189
20160282234
2016-09-29

Methods relating to designing wellbore strengthening fluids

#190
20160237768
2016-08-18

Methods for replenishing particles screened from drilling fluids

#191
20160230543
2016-08-11

Tracer and method

#192
20160230495
2016-08-11

Swellable article

#193
20160222275
2016-08-04

Wellbore fluid additives of fibrillated fibers and methods of use

#194
20160208193
2016-07-21

Hydraulic fluid compositions

#195
20160208161
2016-07-21

Expandable particulates and methods of use and preparation

#196
20160201433
2016-07-14

Solidified, thermally insulating composition

#197
20160186044
2016-06-30

Core-shell triggered release systems

#198
20160177698
2016-06-23

Energetic cocrystals for treatment of a subterranean formation

#199
20160145484
2016-05-26

Packing fluids and methods

#200
20160130497
2016-05-12

Encapsulated internal filter cake breakers with improved release properties

#201
20160130496
2016-05-12

Scale-inhibiting cocrystals for treatment of a subterranean formation

#202
20160122617
2016-05-05

Degradable balls for use in subterranean applications

#203
20160122614
2016-05-05

Weighted well fluids

#204
20160108327
2016-04-21

Chemical inhibitors with sub-micron materials as additives for enhanced flow assurance

#205
20160076369
2016-03-17

Well treatment

#206
20160061701
2016-03-03

Method and apparatus for testing gel-based lost circulation materials

#207
20160046854
2016-02-18

Traceable polymeric additives for use in subterranean formations

#208
20160024370
2016-01-28

Zero-invasion acidic drilling fluid

#209
20160000070
2016-01-07

Choline chloride in liquid guar formulations

#210
20150368539
2015-12-24

Carbonaceous nanoparticles as conductivity enhancement additives to water-in-oil emulsions, oil-in-water emulsions and oil-based wellbore fluids

#211
20150353831
2015-12-10

Modified carbonized red mud

#212
20150353830
2015-12-10

Inorganic, halogen-free flameproofing agent on the basis of chemically modified recarbonized red mud

#213
20150344766
2015-12-03

Enhanced wellbore strengthening solution

#214
20150329767
2015-11-19

Methods and compositions for use in oil and/or gas wells

#215
20150323515
2015-11-12

Method using halogenated benzoic acid esters and aldehydes for hydraulic fracturing and for tracing petroleum production

#216
20150315885
2015-11-05

Methods and systems for generating reactive fluoride species from a gaseous precursor in a subterranean formation for stimulation thereof

#217
20150275064
2015-10-01

Method of chemically delaying peroxygen based viscosity reduction reactions

#218
20150166869
2015-06-18

Enhanced acid soluble wellbore strengthening solution

#219
20150159076
2015-06-11

Acid soluble defluidizing pills

#220
20150159074
2015-06-11

Reservoir wellbore fluid

#221
20150152315
2015-06-04

Insulating annular fluid

#222
20150114648
2015-04-30

Parylene coated chemical entities for downhole treatment applications

#223
20150065672
2015-03-05

Amphiphilic macromolecule and use thereof

#224
20150027707
2015-01-29

Engineered methods and materials for wellbore strengthening in subterranean operations

#225
20150021033
2015-01-22

Thixotropic agents and methods of use

#226
20150013984
2015-01-15

Fluid viscosity control

#227
20150013983
2015-01-15

Solid-supported crosslinker for treatment of a subterranean formation

#228
20150007995
2015-01-08

Lubricating compositions for use with downhole fluids

#229
20140367117
2014-12-18

Agents for enhanced degradation of controlled electrolytic material

#230
20140338902
2014-11-20

Polysaccharide delivery unit for wellbore treatment agent and method

#231
20140323359
2014-10-30

Methods of treating a well with a fluorinated lubricant or corrosion inhibitor

#232
20140303046
2014-10-09

Wellbore servicing materials and methods of making and using same

#233
20140290692
2014-10-02

Methods of mitigating bituminous material adhesion using nano-particles

#234
20140231082
2014-08-21

Methods and compositions for treating subterranean formations with interlocking lost circulation materials

#235
20140206582
2014-07-24

Completion fluid for reducing friction between metal surfaces

#236
20140202709
2014-07-24

Method of completing a well using a friction reducing completion fluid

#237
20140202703
2014-07-24

Method of reducing corrosion on metal surfaces

#238
20140174724
2014-06-26

Hollow hydrogel capsules and methods of using the same

#239
20140155300
2014-06-05

Oil or gas treatment fluid containing a chelate or coordination complex that sets

#240
20140135237
2014-05-15

Expandable coating for solid particles and associated methods of use in subterranean treatments

#241
20140116778
2014-05-01

Chemically tagged polymers for simplified quantification and related methods

#242
20140110102
2014-04-24

Passive downhole chemical release packages

#243
20140087975
2014-03-27

Treatment fluid containing a corrosion inhibitor of a polymer including a silicone and amine group

#244
20140087974
2014-03-27

Particulate Weighting Agents Comprising Removable Coatings and Methods of Using the Same

#245
20140060843
2014-03-06

Wellbore servicing compositions and methods of making and using same

#246
20140051612
2014-02-20

Swellable article

#247
20140045731
2014-02-13

Equipment for preparing curved fibers

#248
20140014332
2014-01-16

Methods relating to designing wellbore strengthening fluids

#249
20140000898
2014-01-02

Method of cooling downhole element using nanoenhanced downhole fluid

#250
20130327527
2013-12-12

Method to enhance fiber bridging

#251
20130292123
2013-11-07

Degradable balls for use in subterranean applications

#252
20130261030
2013-10-03

Fluids for use with High-frequency Downhole Tools

#253
20130244910
2013-09-19

Lost circulation materials and methods of using the same

#254
20130220608
2013-08-29

MODIFIED PARTICULATE WEIGHTING AGENTS AND METHODS OF USING THE SAME

#255
20130217603
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