ClassID:

104258

C09K8/04 - 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

Sub-classes:
Recent Application in this class:
#1
20260117110
2026-04-30

SODIUM ALKYL PG-DIMONIUM CHLORIDE PHOSPHATES AS LUBRICATING AGENTS IN AQUEOUS BASED DRILLING FLUIDS

#2
20250314162
2025-10-09

Non-fracturing Restimulation of Unconventional Hydrocarbon Containing Formations to Enhance Production

#3
20250250884
2025-08-07

INSULATING FLUID FOR THERMAL INSULATION

#4
20240400925
2024-12-05

OXIDIZING COMPOSITIONS FOR REMOVING SULFUR COMPOUNDS FROM HYDROCARBON FUELS AND WASTEWATER

#5
20240400886
2024-12-05

OXIDIZING COMPOSITIONS FOR REMOVING SULFUR COMPOUNDS FROM HYDROCARBON FUELS AND WASTEWATER

#6
20240271511
2024-08-15

Non-fracturing restimulation of unconventional hydrocarbon containing formations to enhance production

#7
20240182334
2024-06-06

Fluid remanufacturing

#8
20240150640
2024-05-09

Formulation for the recovery of hydrocarbons including a surfactant system

#9
20240059948
2024-02-22

EXTENDED RELEASE ASPHALTENE INHIBITOR COMPOSITION

#10
20240052230
2024-02-15

WATER-BASED DRILLING FLUIDS COMPRISING SALTS AND NON-REDUCING SUGAR ALCOHOLS

#11
20230323183
2023-10-12

Ethylene amine hydrochloride based shale inhibitor for aqueous drilling fluids

#12
20230115715
2023-04-13

Nanoparticle wedge effect to induce water wettability

#13
20230113644
2023-04-13

Fluid remanufacturing

#14
20230072927
2023-03-09

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

#15
20220372360
2022-11-24

Divalent brine fluids having improved rheology and multifunctional properties

#16
20220282147
2022-09-08

Sodium alkyl PG-dimonium chloride phosphates as lubricating agents in aqueous based drilling fluids

#17
20220259480
2022-08-18

Water-based drilling fluid compositions and methods for drilling subterranean wells

#18
20220220355
2022-07-14

Embedded treatment fluid additives for use in subterranean formation operations

#19
20220154061
2022-05-19

DRILLING FLUID

#20
20220106515
2022-04-07

Compositions for enhanced oil recovery

#21
20220098957
2022-03-31

INSULATING FLUID FOR THERMAL INSULATION

#22
20210371720
2021-12-02

Low molecular mass organic gelator wellbore stabilizers

#23
20210284896
2021-09-16

Formulation for the recovery of hydrocarbons including a surfactant system

#24
20210277321
2021-09-09

Oilfield drilling lubricant for water-based and oil-based systems

#25
20210198550
2021-07-01

Apparatus for concentrating wastewater and for creating brines

#26
20210062067
2021-03-04

Nanofibril cellulose additive

#27
20210032525
2021-02-04

Spacer fluids and cement slurries that include surfactants

#28
20210032522
2021-02-04

Lubricants that include alkyl esters and fatty acids

#29
20210017842
2021-01-21

Non-fracturing restimulation of unconventional hydrocarbon containing formations to enhance production

#30
20210009887
2021-01-14

Synergist for water-based drilling fluid and preparation method therefor, water-based drilling fluid and application thereof

#31
20210002157
2021-01-07

Fluid remanufacturing

#32
20200407621
2020-12-31

EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

#33
20200399522
2020-12-24

Drilling fluids that include water-soluble acid catalyst precursors or reaction products of such and uses for such drilling fluids

#34
20200291285
2020-09-17

Development of retarded acid system

#35
20200291284
2020-09-17

DIVALENT BRINE FLUIDS HAVING IMPROVED RHEOLOGY AND MULTIFUNCTIONAL PROPERTIES

#36
20200270504
2020-08-27

Pickering foam drilling fluids

#37
20200263075
2020-08-20

Nanosilica dispersion for thermally insulating packer fluid

#38
20200248061
2020-08-06

Lubricants for water-based drilling fluids

#39
20200239763
2020-07-30

Microemulsion flowback recovery compositions and methods for making and using same

#40
20200224073
2020-07-16

Apparatus for concentrating wastewater and for creating brines

#41
20200217191
2020-07-09

Downhole communication carrier fluid

#42
20200199437
2020-06-25

DRILLING FLUID FOR HYDROCARBON WELLS AND MANUFACTURING PROCESS THEREOF

#43
20200190946
2020-06-18

Insulating fluid for thermal insulation

#44
20200165504
2020-05-28

Spacer fluid compositions that include surfactants

#45
20200140739
2020-05-07

Methods of using drilling fluid compositions with enhanced rheology

#46
20200095491
2020-03-26

Development of anti-bit balling fluids

#47
20200087560
2020-03-19

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

#48
20200040247
2020-02-06

Development of anti-bit balling fluids

#49
20200010752
2020-01-09

Treatment fluids comprising synthetic silicates and methods for use

#50
20190382642
2019-12-19

Shale inhibitors used in the water-based fluid for shale formation

#51
20190375975
2019-12-12

Betaines for shale stabilization

#52
20190309424
2019-10-10

Benzimidazole composition for metal corrosion inhibition

#53
20190309213
2019-10-10

In-situ hydrogen sulfide mitigation

#54
20190309210
2019-10-10

Development of anti-bit balling fluids

#55
20190292432
2019-09-26

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

#56
20190292431
2019-09-26

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

#57
20190284705
2019-09-19

Method for inhibiting metal corrosion using a benzimidazole-containing composition

#58
20190256758
2019-08-22

High densitiy clear brine fluids

#59
20190249067
2019-08-15

Nanosilica dispersion for thermally insulating packer fluid

#60
20190249065
2019-08-15

Embedded treatment fluid additives for use in subterranean formation operations

#61
20190233708
2019-08-01

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

#62
20190233707
2019-08-01

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

#63
20190226288
2019-07-25

Method of conversion of a drilling mud to a gel-based lost circulation material to combat lost circulation during continuous drilling

#64
20190225873
2019-07-25

Guanidine- or guanidinium-containing compounds for treatment of subterranean formations

#65
20190203096
2019-07-04

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

#66
20190203095
2019-07-04

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

#67
20190194524
2019-06-27

Enhanced surfactant polymer flooding processes for oil recovery in carbonate reservoirs

#68
20190194521
2019-06-27

Nanosilica dispersion for thermally insulating packer fluid

#69
20190185729
2019-06-20

Treatment fluids comprising calcium aluminate cement and methods of use

#70
20190178051
2019-06-13

System and method for delivering a flowable substance and borehole sealing

#71
20190145222
2019-05-16

Insulating fluid for thermal insulation

#72
20190136110
2019-05-09

Drill-in fluid compositions and methods

#73
20190093007
2019-03-28

Methods and compositions for treating a subterranean formation with a polymeric additive composite

#74
20190092996
2019-03-28

DISPERSANT IN CEMENT FORMULATIONS FOR OIL AND GAS WELLS

#75
20190071595
2019-03-07

High performance water based fluid

#76
20190062618
2019-02-28

Methods for determining an optimal surfactant structure for oil recovery

#77
20190048248
2019-02-14

Nanofibril cellulose additive

#78
20190040306
2019-02-07

Enhancing acid fracture conductivity

#79
20190032461
2019-01-31

Non-fracturing restimulation of unconventional hydrocarbon containing formations to enhance production

#80
20180371308
2018-12-27

FOOD GRADE MATERIAL AS EFFECTIVE CLAY CONTROL AGENT

#81
20180346784
2018-12-06

Betaines for shale stabilization

#82
20180334750
2018-11-22

Composition and methods for inhibition of metal corrosion for use in the oil and gas industry

#83
20180334614
2018-11-22

Enhancing acid fracture conductivity

#84
20180334613
2018-11-22

Enhancing acid fracture conductivity

#85
20180334612
2018-11-22

Enhancing acid fracture conductivity

#86
20180327651
2018-11-15

Methods for determining an optimal surfactant structure for oil recovery

#87
20180320063
2018-11-08

Development of retarded acid system

#88
20180320050
2018-11-08

Methods of using drilling fluid compositions with enhanced rheology

#89
20180312738
2018-11-01

Apparatus for concentrating wastewater and for creating brines

#90
20180312439
2018-11-01

Dispersant in cement formulations for oil and gas wells

#91
20180282216
2018-10-04

Dispersant in cement formulations for oil and gas wells

#92
20180251666
2018-09-06

Polymer-modified asphalt for drilling fluid applications

#93
20180223175
2018-08-09

Retarded acid systems, emulsions, and methods for using in acidizing carbonate formations

#94
20180223169
2018-08-09

Spacer fluid compositions that include surfactants

#95
20180223168
2018-08-09

Spacer fluids and cement slurries that include surfactants

#96
20180223167
2018-08-09

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

#97
20180223166
2018-08-09

Invert emulsion based drilling fluid and methods of using same

#98
20180223165
2018-08-09

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

#99
20180223162
2018-08-09

Development of anti-bit balling fluids

#100
20180223161
2018-08-09

Development of anti-bit balling fluids

#101
20180223160
2018-08-09

Anti-bit balling drilling fluids, and methods of making and use thereof

#102
20180223159
2018-08-09

Anti-bit balling drilling fluids, and methods of making and use thereof

#103
20180223158
2018-08-09

Drilling fluid compositions with enhanced rheology and methods of using same

#104
20180223156
2018-08-09

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

#105
20180223155
2018-08-09

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

#106
20180223153
2018-08-09

Lubricants for water-based drilling fluids

#107
20180222797
2018-08-09

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

#108
20180222796
2018-08-09

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

#109
20180201829
2018-07-19

Microemulsion flowback recovery compositions and methods for making and using same

#110
20180201821
2018-07-19

Use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid

#111
20180179858
2018-06-28

Methods of microbial measuring and control

#112
20180155601
2018-06-07

FLUID FORMULATIONS FOR CLEANING OIL-BASED OR SYNTHETIC OIL-BASED MUD FILTER CAKES

#113
20180155600
2018-06-07

Hydro-fracking method using an aloe vera fracturing fluid

#114
20180155598
2018-06-07

Divalent brine fluids having improved rheology and multifunctional properties

#115
20180118992
2018-05-03

Drilling fluid for use in horizontal directional drilling operations

#116
20180099882
2018-04-12

Method and system for the autonomous self-limiting generation of chlorine dioxide

#117
20180066173
2018-03-08

Asphalt water-based drilling fluid additive

#118
20180037797
2018-02-08

Wellbore sealant using nanoparticles

#119
20180023376
2018-01-25

Reclamation of brines with metal contamination using lime

#120
20170369759
2017-12-28

Compositions for enhanced oil recovery

#121
20170349809
2017-12-07

Urea hydrochloride compositions and associated methods

#122
20170335172
2017-11-23

Aldehydes as a catalyst for an oxidative breaker

#123
20170313926
2017-11-02

Treatment fluids comprising calcium aluminate cement and methods of use

#124
20170298264
2017-10-19

Use of nanoparticles as lubricity additive in well fluids

#125
20170283681
2017-10-05

USE OF NANOPARTICLES AS LUBRICITY ADDITIVE IN WELL FLUIDS

#126
20170260819
2017-09-14

Method of conversion of a drilling mud to a gel-based lost circulation material to combat lost circulation during continuous drilling

#127
20170233629
2017-08-17

Drilling mud composition with Aloe vera particles and a fracking process using the same

#128
20170183560
2017-06-29

Guanidine- or guanidinium-containing compounds for treatment of subterranean formations

#129
20170152428
2017-06-01

Compositons and methods for curing lost circulation

#130
20170130121
2017-05-11

Methods and systems for preparing surfactant polyelectrolyte complexes for use in subterranean formations

#131
20170114265
2017-04-27

WATER-BASED DRILLING FLUID FOR REDUCING BITUMEN ACCRETION

#132
20170073555
2017-03-16

Pendant epoxide polymers and methods of treating subterranean formations

#133
20170037301
2017-02-09

Polymeric surfactant containing a protein head group and lipid tail group

#134
20160251564
2016-09-01

Viscosifier for enhanced oil recovery

#135
20160237336
2016-08-18

Dual breaker system for reducing formation damage during fracturing

#136
20160230076
2016-08-11

Freeze/thaw stable latex emulsion for treatment of well bore tar

#137
20160222284
2016-08-04

Injecting polyelectrolyte based sacrificial agents for use in unconventional formations

#138
20160160113
2016-06-09

Drill-in fluids comprising nanoparticulates for consolidating subterranean formations while drilling

#139
20160102268
2016-04-14

Drilling fluid system

#140
20160002522
2016-01-07

Additives for boosting performance of water-based drilling fluids, drilling fluids including same, and methods of making and using same

#141
20150329762
2015-11-19

Use of nanoparticles as a lubricity additive in well fluids

#142
20150299554
2015-10-22

Alkylated polyetheramines as clay stabilizing agents

#143
20150218432
2015-08-06

Heat removal in drilling and production operations

#144
20150114473
2015-04-30

Seawater transportation for utilization in hydrocarbon-related processes including existing pipeline infrastructures

#145
20150087563
2015-03-26

FLUID FORMULATIONS FOR CLEANING OIL-BASED OR SYNTHETIC OIL-BASED MUD FILTER CAKES

#146
20150060145
2015-03-05

Drilling Fluid That Fracks While Drilling And Can Be Used In Well Completion

#147
20150060074
2015-03-05

Methods and Fluid Compositions for Creating a Wellbore

#148
20150038471
2015-02-05

Process for preventing or mitigating biofouling

#149
20150034389
2015-02-05

WATER-BASED DRILLING FLUID WITH TANNIN ADDITIVE FROM C. CORIARIA

#150
20140378617
2014-12-25

Preparation of amphiphilic block polymers by controlled radical micellar polymerisation

#151
20140353043
2014-12-04

Method of conversion of a drilling mud to a gel-based lost circulation material to combat lost circulation during continuous drilling

#152
20140353042
2014-12-04

Self-triggering lost circulation control in carbonate formation

#153
20140332208
2014-11-13

Seawater transportation for utilization in hydrocarbon-related processes

#154
20140194326
2014-07-10

Compositions and methods for treatment of well bore tar

#155
20140166294
2014-06-19

Cystine proteases for bacterial control

#156
20140138159
2014-05-22

Method of using biologically-derived monoesters as drilling fluids

#157
20140130581
2014-05-15

Method for determining the effectiveness of asphaltene dispersant additives for inhibiting or preventing asphaltene precipitation in a hydrocarbon-containing material subjected to elevated temperature and presssure conditions

#158
20140121134
2014-05-01

Drilling fluid compositions and methods for use thereof in subterranean formations

#159
20140069645
2014-03-13

Methods to deliver fluids on a well site with variable solids concentration from solid slurries

#160
20140066339
2014-03-06

Aqueous salt-stabilized drilling fluids

#161
20140034143
2014-02-06

Hydraulic fluid compositions

#162
20130153225
2013-06-20

Compositions and methods for treatment of well bore tar

#163
20120316089
2012-12-13

Methods to Characterize Fracture Plugging Efficiency for Drilling Fluids

#164
20120316088
2012-12-13

Method to characterize fracture plugging efficiency for drilling fluids

#165
20120283148
2012-11-08

Methods and Compositions for Hydrocarbon-Based Crosslinking Additives with Non-Detectable BTEX Levels

#166
20120264658
2012-10-18

Methods to characterize fracture plugging efficiency for drilling fluids

#167
20120216990
2012-08-30

Heat removal in drilling and production operations

#168
20120160778
2012-06-28

Sulfate molecule removal through inorganic or divalent ion nuclei seeding

#169
20120118645
2012-05-17

Methods using well drilling fluids having clay control properties

#170
20110259592
2011-10-27

Method and composition for treating fluids before injection into subterranean zones

#171
20110160098
2011-06-30

Hydraulic fluid compositions

#172
20110011589
2011-01-20

Well service compositions for consolidation of particulates in subterranean coal seams

#173
20100300759
2010-12-02

Drilling fluid containing carbon nanotubes

#174
20100227781
2010-09-09

Method to prevent salt crystal agglomeration and settling in a drilling fluid

#175
20100181070
2010-07-22

Methods of designing treatment fluids based on solid-fluid interactions

#176
20100167961
2010-07-01

Stuck drill pipe additive and method

#177
20100096130
2010-04-22

Toe-to-heel gravel packing methods

#178
20090253595
2009-10-08

Surfactants for hydrocarbon recovery

#179
20090139771
2009-06-04

Method of making drilling fluids containing microbubbles

#180
20090082230
2009-03-26

Well Treatment Fluids Containing Nanoparticles and Methods of Using Same

#181
20090036331
2009-02-05

Hydraulic fluid compositions

#182
20090029880
2009-01-29

Method of using ionic liquids to inhibit or prevent the swelling of clay

#183
20080312107
2008-12-18

Process for treating underground formations

#184
20080234148
2008-09-25

Method of Increasing pH of High-Density Brines

#185
20080202815
2008-08-28

Drilling fluids

#186
20080017382
2008-01-24

Process for treating underground formations

#187
20070197399
2007-08-23

Ethoxylated raw cotton linters for completion and workover fluids

#188
20070173414
2007-07-26

Well drilling fluids having clay control properties

#189
20070054812
2007-03-08

Method and thermodynamic inhibitors of gas hydrates in water-based fluids

#190
20060258545
2006-11-16

Well completion spacer fluids containing fibers

#191
20060237192
2006-10-26

Lost circulation composition

#192
20060148657
2006-07-06

Zeolite compositions having enhanced compressive strength

#193
20060137876
2006-06-29

Zeolite compositions having enhanced compressive strength

#194
20060127301
2006-06-15

Process for the preparation of cabr2 hydrates and uses thereof

#195
20060019834
2006-01-26

Water-based drilling fluids

#196
20050257932
2005-11-24

Filter cake degradation compositions and associated methods

#197
20050256012
2005-11-17

Well drilling fluids

#198
20050199428
2005-09-15

Drilling fluids

#199
20050187113
2005-08-25

High performance water-based mud system

#200
20050153845
2005-07-14

Method of increasing pH of high-density brines

#201
18111933
2023-10-17

Polyaspartic acid derivative and preparation method and use thereof as lubricant, and water-based drilling fluid and use thereof

#202
15595108
2018-10-16

Enhancing acid fracture conductivity

#203
13972486
2014-08-19

Seawater transportation for utilization in hydrocarbon-related processes