ClassID:

104260

C09K8/06 - 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; Aqueous well-drilling compositions Clay-free compositions

Sub-classes:
Recent Application in this class:
#1
20260028519
2026-01-29

TWO-DIMENSIONAL NANOMATERIALS FOR CO2 MINERALIZATION IN DOWNHOLE ENVIRONMENTS

#2
20260022287
2026-01-22

DRILLING FLUIDS INCLUDING WETTABILITY MODIFIERS, AND RELATED METHODS

#3
20250354047
2025-11-20

METAL OXIDE NANOSHALE INHIBITORS FOR WATER-BASED DRILLING FLUIDS

#4
20250115806
2025-04-10

DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

#5
20250115805
2025-04-10

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

#6
20250051627
2025-02-13

SHALE INHIBITORS AND SYSTEMS AND METHODS RELATED THERETO

#7
20250011644
2025-01-09

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

#8
20250011643
2025-01-09

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

#9
20240301277
2024-09-12

Methods for Stimulating a Hydrocarbon-bearing Formation by Perforating a Wellbore and Introducing an Acidic Composition in the Wellbore

#10
20240279533
2024-08-22

DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

#11
20240254383
2024-08-01

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

#12
20240191128
2024-06-13

Methods for Stimulating a Hydrocarbon-bearing Formation by Perforating a Wellbore and Introducing an Acidic Composition in the Wellbore

#13
20240166935
2024-05-23

DRILL-IN FLUIDS USING CALCIUM CARBONATE PARTICLES FORMED FROM SEQUESTERED CARBON DIOXIDE

#14
20240141223
2024-05-02

ENVIRONMENTALLY FRIENDLY NANOSHALE INHIBITOR IN AQUEOUS-BASED WELLBORE FLUIDS

#15
20230183543
2023-06-15

Silicate shale inhibitor additives

#16
20230167352
2023-06-01

Filter cake removal compositions and methods of making and using same

#17
20230138419
2023-05-04

Method for fracking subterranean geological formation with surfactant-containing fluid

#18
20230125900
2023-04-27

Method for fracking of simulation of hydrocarbon bearing formation

#19
20230120003
2023-04-20

Methods for stimulating a hydrocarbon-bearing formation by perforating a wellbore and introducing an acidic composition in the wellbore

#20
20230034895
2023-02-02

Methods for stimulating hydrocarbon-bearing formations

#21
20220372360
2022-11-24

Divalent brine fluids having improved rheology and multifunctional properties

#22
20220363981
2022-11-17

Methods for stimulating hydrocarbon-bearing formations

#23
20220049156
2022-02-17

Methods for spotting acid in a wellbore

#24
20220017812
2022-01-20

Removal of a mineral phase from a surface associated with a wellbore

#25
20210371721
2021-12-02

Low molecular mass organic gelator viscosihiers

#26
20210363400
2021-11-25

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

#27
20210292633
2021-09-23

High density fluid for completion applications

#28
20210238468
2021-08-05

Stabilization and reduction of TCT of divalent iodide-containing brines

#29
20210230476
2021-07-29

Methods for stimulating a hydrocarbon-bearing formation by perforating a wellbore and introducing and acidic composition in the wellbore

#30
20210189855
2021-06-24

Use of sulfonic acids in downhole methods

#31
20210115316
2021-04-22

Temperature stability of polyols and sugar alcohols in brines

#32
20210102113
2021-04-08

Betaine surfactants containing an unsaturated fatty tail and methods thereof

#33
20210095178
2021-04-01

Drilling fluid comprising a lubricant

#34
20210079283
2021-03-18

Heavy fluid and method of making it

#35
20210040372
2021-02-11

Stabilization and reduction of TCT of brines containing monovalent iodides

#36
20200406217
2020-12-31

Methods including functionalizing nanoparticles and forming suspensions

#37
20200399520
2020-12-24

Additives for oil and gas drilling and production

#38
20200399519
2020-12-24

Additives for oil and gas drilling and production

#39
20200399518
2020-12-24

Additives for oil and gas drilling and production

#40
20200291284
2020-09-17

DIVALENT BRINE FLUIDS HAVING IMPROVED RHEOLOGY AND MULTIFUNCTIONAL PROPERTIES

#41
20200263080
2020-08-20

Downhole methods

#42
20200181472
2020-06-11

Functionalized nanosilica as shale inhibitor in water-based fluids

#43
20200131423
2020-04-30

Additives for oil and gas drilling and production

#44
20200079989
2020-03-12

Additives to reduce the crystallization temperature of brines and methods of use

#45
20200071591
2020-03-05

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

#46
20200071589
2020-03-05

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

#47
20190345807
2019-11-14

Methods for stimulating hydrocarbon-bearing formations

#48
20190345376
2019-11-14

Methods for stimulating hydrocarbon-bearing formations

#49
20190322919
2019-10-24

Shale Hydration Inhibition Agent

#50
20190299184
2019-10-03

Compositions of matter comprising suspended nanoparticles and related methods

#51
20190233705
2019-08-01

Date tree trunk-based fibrous loss circulation materials

#52
20190225901
2019-07-25

Industrial Fluid

#53
20190194526
2019-06-27

Surfactant flowback aids for use in subterranean formation operations

#54
20190185733
2019-06-20

CLAY INHIBITORS FOR DRILLING, FRACTURING, AND OTHER PROCEDURES

#55
20190161667
2019-05-30

HIGH DENSITY BRINES

#56
20190127623
2019-05-02

Heavy Fluid and Method of Making It

#57
20190119557
2019-04-25

Stabilization of iodide-containing brines and brine mixtures

#58
20190119556
2019-04-25

Stabilization and reduction of TCT of divalent iodide-containing brines

#59
20190119548
2019-04-25

Stabilization and reduction of TCT of brines containing monovalent iodides

#60
20190010377
2019-01-10

Functionalized nanosilica as shale inhibitor in water-based fluids

#61
20180355491
2018-12-13

Synthetic hydroxide compositions and uses thereof

#62
20180320049
2018-11-08

Hydrophobically-treated particulates for improved fluid rheology

#63
20180305600
2018-10-25

EXOTHERMIC REACTANTS FOR USE IN SUBTERRANEAN FORMATION TREATMENT FLUIDS

#64
20180223155
2018-08-09

Compositions and methods of use of water-based drilling fluids with increased thermal stability

#65
20180171198
2018-06-21

Temperature stability of polyols and sugar alcohols in brines

#66
20180163117
2018-06-14

Compositions for drilling applications

#67
20180155598
2018-06-07

Divalent brine fluids having improved rheology and multifunctional properties

#68
20180057729
2018-03-01

Date tree trunk-based fibrous loss circulation materials

#69
20180051200
2018-02-22

Liquid loaded powders made from hybrid calcium carbonate for oil and gas drilling fluids

#70
20170327722
2017-11-16

High temperature viscoelastic surfactant (VES) fluids comprising nanoparticle viscosity modifiers

#71
20170292055
2017-10-12

Method of increasing the density of a well treatment brine

#72
20170260439
2017-09-14

Method for forming a high-performance aqueous-phase polymer fluid and system for drilling well bores in low-gradient formations

#73
20170218250
2017-08-03

Functionalized nanosilica as shale inhibitor in water-based fluids

#74
20170190622
2017-07-06

Drilling method using high density, high strength, acid soluble pseudo-crosslinked, lost circulation preventative material

#75
20170174972
2017-06-22

Lubrication for drilling fluid

#76
20170152431
2017-06-01

Compositions and method for treating out hydrogen sulfide and preventing settling of precipitate in an environmentally responsible drilling and packer fluid

#77
20170121585
2017-05-04

Oil-based drilling fluid employing jojoba oil

#78
20170029686
2017-02-02

Wellbore fluids for use downhole

#79
20160355723
2016-12-08

High density, high strength, acid soluble pseudo-crosslinked, lost circulation preventative material

#80
20160348451
2016-12-01

Techniques to manage mud properties

#81
20160319178
2016-11-03

Secondary esters, methods of making, and uses thereof

#82
20160289537
2016-10-06

Sulfide-containing corrosion inhibitors

#83
20160289529
2016-10-06

LUBRICANT ADDITIVES FOR WELL-BORE OR SUBTERRANEAN DRILLING FLUIDS OR MUDS

#84
20160230069
2016-08-11

Environmental friendly well treatment fluids comprising an ester

#85
20160208158
2016-07-21

AMINE-BASED SHALE INHIBITOR AND METHODS FOR DRILLING, FRACTURING, AND WELL TREATMENT

#86
20160186032
2016-06-30

DRILLING FLUID COMPOSITION AND METHOD USEFUL FOR REDUCING ACCRETION OF BITUMIN ON DRILL COMPONENTS

#87
20160152882
2016-06-02

CATALYTIC SYSTEM FOR BREAKER FLUID FORMULATIONS

#88
20160137901
2016-05-19

CLAY INHIBITORS FOR DRILLING, FRACTURING, AND OTHER PROCEDURES

#89
20160130494
2016-05-12

Corrosion inhibitors for drilling fluid brines

#90
20160122614
2016-05-05

Weighted well fluids

#91
20160102268
2016-04-14

Drilling fluid system

#92
20160102237
2016-04-14

WELLBORE SERVICING COMPOSITIONS AND METHODS OF MAKING AND USING SAME

#93
20160060500
2016-03-03

Composition and Methods for Completing Subterranean Wells

#94
20160002521
2016-01-07

LUBRICANTS AND WELLBORE FLUIDS

#95
20150353806
2015-12-10

Biodegradable additive concentrate improving the lubricity of aqueous sludges, use thereof and aqueous sludge for drilling

#96
20150240142
2015-08-27

Compositions and Methods for Completing Subterranean Wells

#97
20150166866
2015-06-18

Dissipative surfactant aqueous-based drilling system for use in hydrocarbon recovery operations from heavy oil and tar sands

#98
20150159072
2015-06-11

OXYGEN SCAVENGER FOR DRILLING FLUIDS

#99
20150159071
2015-06-11

Lubrication for drilling fluid

#100
20150114646
2015-04-30

Triggered heating of wellbore fluids by carbon nanomaterials

#101
20150075789
2015-03-19

Boronated biopolymer crosslinking agents and methods relating thereto

#102
20140256602
2014-09-11

DRILLING FLUID THAT WHEN MIXED WITH A CEMENT COMPOSITION ENHANCES PHYSICAL PROPERTIES OF THE CEMENT COMPOSITION

#103
20140256601
2014-09-11

PREDISPERSED WAXES FOR OIL AND GAS DRILLING

#104
20140228257
2014-08-14

Method for sea floor drilling using hagfish slime as drilling fluid additive

#105
20140182942
2014-07-03

INVERT DRILLING FLUIDS

#106
20140158363
2014-06-12

Wellbore servicing fluids and methods of making and using same

#107
20130324442
2013-12-05

Compositions and method for treating out hydrogen sulfide and preventing settling of precipitate in an environmentally responsible drilling and packer fluid

#108
20130281326
2013-10-24

Clay inhibitors for the drilling industry

#109
20130217602
2013-08-22

Lubricating compositions for use with downhole fluids

#110
20130203636
2013-08-08

Water-based mud lubricant using fatty acid polyamine salts and fatty acid esters

#111
20130178398
2013-07-11

Oxygen scavenger compositions for completion brines

#112
20130165351
2013-06-27

Method to Reduce Salt Necessary to Reach Saturation of Drilling Fluids

#113
20130153232
2013-06-20

METHODS AND COMPOSITIONS FOR REDUCING PERMEABILITY OF A SUBTERRANEAN FORMATION

#114
20130130942
2013-05-23

Dissipative Surfactant Aqueous-Based Drilling System for Use in Hydrocarbon Recovery Operations from Heavy Oil and Tar Sands

#115
20130053285
2013-02-28

DRAG-REDUCING AGENT FOR USE IN INJECTION WATER AT OIL RECOVERY

#116
20120305248
2012-12-06

Drilling fluid that when mixed with a cement composition enhances physical properties of the cement composition

#117
20120295820
2012-11-22

MANAGEMENT OF CORROSION IN PHOSPHATE BRINES

#118
20120118569
2012-05-17

Oxygen scavenger compositions for completion brines

#119
20110312857
2011-12-22

Drilling, drill-in and completion fluids containing nanoparticles for use in oil and gas field applications and methods related thereto

#120
20110284228
2011-11-24

Increasing the viscosity of viscoelastic fluids

#121
20110281777
2011-11-17

Drilling fluid and methods

#122
20110092398
2011-04-21

Viscoelastic surfactant fluids and related methods of use

#123
20110048714
2011-03-03

Homogenous synthetic mud-to-cement cementing glasses

#124
20110036579
2011-02-17

Water-based mud lubricant using fatty acid polyamine salts and fatty acid esters

#125
20100305010
2010-12-02

HIGH DENSITY PHOSPHATE BRINES AND METHODS FOR MAKING AND USING SAME

#126
20100267591
2010-10-21

Subterranean bridging agents

#127
20100230108
2010-09-16

Methods of degrading subterranean filter cakes

#128
20100016180
2010-01-21

Method of increasing lubricity of brine-based drilling fluids and completion brines

#129
20090288830
2009-11-26

Homogenous synthetic mud-to-cement cementing glasses

#130
20090169422
2009-07-02

CORROSION RESISTANCE OF INDUSTRIAL BRINE SOLUTIONS

#131
20090166582
2009-07-02

CALCIUM CHLORIDE SOLUTION HAVING IMPROVED CORROSION RESISTANCE

#132
20080217064
2008-09-11

Drilling fluid and methods

#133
20080200353
2008-08-21

Viscoelastic surfactant fluids and related methods of use

#134
20080135302
2008-06-12

High density brines for use in wellbore fluids

#135
20080078546
2008-04-03

Surfactant-based fluid loss control agents for surfactant gels and associated fluids and methods

#136
20070249505
2007-10-25

Viscoelastic Surfactant Fluids and Related Methods of Use

#137
20070204997
2007-09-06

Process for disruption of filter cakes

#138
20070167332
2007-07-19

Quaternary ammonium salts as thickening agents for aqueous systems

#139
20070123431
2007-05-31

Polymer hydration method using microemulsions

#140
20070015670
2007-01-18

Treatment fluids with improved shale inhibition and methods of use in subterranean operations

#141
20070015668
2007-01-18

Treatment fluids with improved shale inhibition and methods of use in subterranean operations

#142
20060254771
2006-11-16

Non-Damaging Fluid-Loss Pill and Method of Using the Same

#143
20060229212
2006-10-12

Self-destructing filter cake

#144
20050261137
2005-11-24

Methods and fluid compositions for depositing and removing filter cake in a well bore

#145
20050227876
2005-10-13

Drag-reducing agent for use in injection water at oil recovery

#146
20050194139
2005-09-08

Methods and compositions for reducing the viscosity of treatment fluids

#147
20050059557
2005-03-17

Subterranean treatment fluids comprising a degradable bridging agent and methods of treating subterranean formations

#148
20050059556
2005-03-17

Treatment fluids and methods of use in subterranean formations

#149
20050054540
2005-03-10

Phospholipid lubricating agents in aqueous based drilling fluids

#150
20050049150
2005-03-03

Shale hydration inhibition agent and method of use

#151
18812507
2025-10-07

Combination clay stabilizer having an alkali metal asphalt sulfonate and quaternary ammonium salt

#152
18664209
2025-11-18

Metal oxide nanoshale inhibitors for water-based drilling fluids

#153
16943434
2022-01-04

Epoxidized alpha olefin based lubricant for water-based drilling fluids

#154
16746230
2020-12-29

Modified silicon dioxide material of fluorocarbon active agent type super-amphiphobic cutting-carrying agent suitable for water-based drilling fluid and preparation method thereof

#155
16281503
2020-05-19

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