ClassID:

104271

C09K8/22 - 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-containing compositions characterised by the organic compounds Synthetic organic compounds

Sub-classes:
Recent Application in this class:
#1
20260035605
2026-02-05

SHALE SWELLING INHIBITION IN WELLBORE

#2
20250257255
2025-08-14

DUAL FUNCTION ADDITIVE FOR WATER BASED DRILLING FLUIDS

#3
20250223485
2025-07-10

WELLBORE FLUIDS INCLUDING SHALE INHIBITORS, AND RELATED METHODS

#4
20240010903
2024-01-11

DEEP EUTECTIC SOLVENTS

#5
20230313019
2023-10-05

Compositions of matter comprising suspended nanoparticles functionalized with glymo or glymo-like groups and related methods

#6
20230272301
2023-08-31

Lubricant composition for water-based compositions

#7
20220228050
2022-07-21

Nano-organosilicon film-forming and hydrophobic shale surface hydration inhibitor and its preparation method and application

#8
20220145158
2022-05-12

STABLE MAGNETIC DRILLING MUD AND METHOD

#9
20210363400
2021-11-25

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

#10
20210317361
2021-10-14

Methods and systems for use of quaternary ammonium organosilanes in oil and gas hydraulic fracking

#11
20210095179
2021-04-01

Borehole fluid with a thiamine-based shale inhibitor

#12
20210032525
2021-02-04

Spacer fluids and cement slurries that include surfactants

#13
20210032524
2021-02-04

Water-based drilling fluids that include lubricants

#14
20200407621
2020-12-31

EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

#15
20200378252
2020-12-03

Real-time monitor and control of active clay in water-based drilling fluids

#16
20200291285
2020-09-17

Development of retarded acid system

#17
20200248061
2020-08-06

Lubricants for water-based drilling fluids

#18
20200165504
2020-05-28

Spacer fluid compositions that include surfactants

#19
20200140739
2020-05-07

Methods of using drilling fluid compositions with enhanced rheology

#20
20200095491
2020-03-26

Development of anti-bit balling fluids

#21
20200087560
2020-03-19

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

#22
20200071591
2020-03-05

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

#23
20200071589
2020-03-05

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

#24
20200040247
2020-02-06

Development of anti-bit balling fluids

#25
20190309210
2019-10-10

Development of anti-bit balling fluids

#26
20190292432
2019-09-26

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

#27
20190292431
2019-09-26

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

#28
20190233708
2019-08-01

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

#29
20190233707
2019-08-01

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

#30
20190203096
2019-07-04

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

#31
20190203095
2019-07-04

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

#32
20190136112
2019-05-09

Lubricant additives for water based drilling fluid

#33
20190092996
2019-03-28

DISPERSANT IN CEMENT FORMULATIONS FOR OIL AND GAS WELLS

#34
20180320063
2018-11-08

Development of retarded acid system

#35
20180320050
2018-11-08

Methods of using drilling fluid compositions with enhanced rheology

#36
20180312439
2018-11-01

Dispersant in cement formulations for oil and gas wells

#37
20180282216
2018-10-04

Dispersant in cement formulations for oil and gas wells

#38
20180223175
2018-08-09

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

#39
20180223169
2018-08-09

Spacer fluid compositions that include surfactants

#40
20180223168
2018-08-09

Spacer fluids and cement slurries that include surfactants

#41
20180223167
2018-08-09

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

#42
20180223166
2018-08-09

Invert emulsion based drilling fluid and methods of using same

#43
20180223165
2018-08-09

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

#44
20180223162
2018-08-09

Development of anti-bit balling fluids

#45
20180223161
2018-08-09

Development of anti-bit balling fluids

#46
20180223160
2018-08-09

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

#47
20180223159
2018-08-09

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

#48
20180223158
2018-08-09

Drilling fluid compositions with enhanced rheology and methods of using same

#49
20180223156
2018-08-09

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

#50
20180223153
2018-08-09

Lubricants for water-based drilling fluids

#51
20180222797
2018-08-09

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

#52
20180222796
2018-08-09

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

#53
20180201821
2018-07-19

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

#54
20170114265
2017-04-27

WATER-BASED DRILLING FLUID FOR REDUCING BITUMEN ACCRETION

#55
20150299554
2015-10-22

Alkylated polyetheramines as clay stabilizing agents

#56
20150203738
2015-07-23

Clay and shale inhibition agents and method of use

#57
20150166868
2015-06-18

Mono-quaternary amine alcohols for use of clay and shale inhibition agents for the drilling industry

#58
20150166867
2015-06-18

Glycol ether amines for use as clay and shale inhibition agents for the drilling industry

#59
20150038471
2015-02-05

Process for preventing or mitigating biofouling

#60
20150008044
2015-01-08

Lost circulation drilling fluids comprising elastomeric rubber particles and a method for decreasing whole mud loss using such composition

#61
20140213490
2014-07-31

Wellbore servicing compositions and methods of making and using same

#62
20140128294
2014-05-08

Corrosion inhibitor systems for low, moderate and high temperature fluids and methods for making and using same

#63
20130203636
2013-08-08

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

#64
20130123148
2013-05-16

Use of polylysine as a shale inhibitor

#65
20120322697
2012-12-20

COMPOSITIONS AND METHODS FOR ENHANCING FLUID RECOVERY FOR HYDRAULIC FRACTURING TREATMENTS

#66
20120310614
2012-12-06

Method and system for predicting the effect of microbes injected into an oil-bearing reservoir

#67
20120238663
2012-09-20

Zero shear viscosifying agent

#68
20120053092
2012-03-01

Shale Hydration Inhibition Agents for Utilization in Water-based Drilling Fluids

#69
20120028855
2012-02-02

SHALE HYDRATION INHIBITION AGENT(S) AND METHOD OF USE

#70
20110272139
2011-11-10

SYSTEM FOR DRILLING A WELLBORE

#71
20110232905
2011-09-29

Zero shear viscosifying agent

#72
20110036579
2011-02-17

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

#73
20100305009
2010-12-02

Oligoglyercol fatty acid ester additives for water-based drilling fluids

#74
20100222241
2010-09-02

Clay Inhibitors for the Drilling Industry

#75
20100152068
2010-06-17

Wellbore treatment fluid

#76
20100065273
2010-03-18

Methods and materials for zonal isolation

#77
20090247429
2009-10-01

Shale hydration inhibition agent(s) and method of use

#78
20090239771
2009-09-24

Swelling Inhibitors for Clays and Shales

#79
20090175688
2009-07-09

Shale hydration inhibition agent and method of use

#80
20080200350
2008-08-21

Process fluid

#81
20080076681
2008-03-27

Shale hydration inhibition agent and method of use

#82
20080039345
2008-02-14

Shale inhibition additive for oil/gas down hole fluids and methods for making and using same

#83
20070207932
2007-09-06

Clay inhibitors for the drilling industry

#84
20070078064
2007-04-05

Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations

#85
20070034410
2007-02-15

Methods for reducing circulation loss during drilling operations

#86
20060234873
2006-10-19

Thermal stability agent for maintaining viscosity and fluid loss properties in drilling fluids

#87
20060194700
2006-08-31

Corrosion inhibitor systems for low, moderate and high temperature fluids and methods for making and using same

#88
20060116296
2006-06-01

Shale inhibition additive for oil/gas down hole fluids and methods for making and using same

#89
20060073985
2006-04-06

Shale hydration inhibition agent and method of use

#90
20060073984
2006-04-06

Shale hydration inhibition agent and method of use

#91
20060073983
2006-04-06

Shale hydration inhibition agent and method of use

#92
20060073982
2006-04-06

Shale hydration inhibition agent and method of use

#93
20050269085
2005-12-08

Method for sealing lost circulation zones

#94
20050221994
2005-10-06

Drilling fluid systems for reducing circulation losses

#95
20050124502
2005-06-09

Compositions for restoring lost circulation

#96
20050113264
2005-05-26

Well treatment fluid

#97
20050113259
2005-05-26

Thermal stability agent for maintaining viscosity and fluid loss properties in drilling fluids

#98
20050096232
2005-05-05

High performance water based drilling fluids and method of use

#99
20050049150
2005-03-03

Shale hydration inhibition agent and method of use

#100
20050043187
2005-02-24

Anti-accretion additives for drilling fluids

#101
20050037930
2005-02-17

Drilling fluids, drilling fluids additives and methods useful for limiting tar sands accretion on metal surfaces

#102
20050037927
2005-02-17

Drilling Fluids, Drilling Fluids Additives and Methods Useful for Limiting Tar Sands Accretion on Metal Surfaces

#103
20050003967
2005-01-06

Colloidal and colloidal-like systems in aqueous, clay-based fluids

#104
18911321
2025-08-26

Hydrogen sulfide treatment method for crude oil/sour gas

#105
18812507
2025-10-07

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

#106
18763303
2024-10-29

Removing hydrogen sulfide from subterranean geological formation with a copper magnesium iron layered triple hydroxide zeolite material in a water-based drilling fluid

#107
15368037
2017-12-19

Encapsulating agent and preparing method thereof, and drilling fluid for petroleum drilling