ClassID:

104275

C09K8/28 - 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; Oil-in-water emulsions containing organic additives

Recent Application in this class:
#1
20260071111
2026-03-12

WELLBORE SERVICING COMPOSITIONS CONTAINING A LATEX ADDITIVE

#2
20260042948
2026-02-12

SURFACTANT COMPOSITION FOR DIRECT EMULSION DRILLING FLUID

#3
20250346797
2025-11-13

POLYMERIC AMIDOAMINE EMULSIFIERS

#4
20250346796
2025-11-13

COMPOSITIONS

#5
20250340773
2025-11-06

Direct Emulsion Drilling Fluid

#6
20250215305
2025-07-03

WELLBORE SERVICING COMPOSITIONS CONTAINING A LATEX ADDITIVE

#7
20240409802
2024-12-12

Wellbore Servicing Fluid and Methods of Making and Using Same

#8
20240368448
2024-11-07

LIGNIN-BASED DRILLING FLUIDS AND RELATED METHODS

#9
20240182773
2024-06-06

POROUS POLYURETHANE FOR CONSOLIDATION OF MATERIAL IN SUBTERRANEAN FORMATIONS

#10
20240059949
2024-02-22

POLYMERIC AMIDOAMINE EMULSIFIERS

#11
20230383166
2023-11-30

Emulsifiers for water-based subterranean treatment fluids

#12
20230340315
2023-10-26

WELLBORE DRILLING FLUID LUBRICITY ADDITIVE AND METHODS

#13
20230295481
2023-09-21

Treatment fluid recipe for high temperature multi-stage fracturing applications

#14
20230174841
2023-06-08

Breakable emulsifiers

#15
20230167349
2023-06-01

Wellbore Servicing Fluid and Methods of Making and Using Same

#16
20230127027
2023-04-27

Quaternary ammonium emulsion breakers

#17
20230011243
2023-01-12

Direct Emulsion Drilling Fluid

#18
20220348814
2022-11-03

Porous polyurethane for consolidation of material in subterranean formations

#19
20220298404
2022-09-22

Processing produced fluids for fluid recovery

#20
20220220356
2022-07-14

Polymeric amidoamine emulsifiers

#21
20220213375
2022-07-07

SPENT JET-ENGINE OIL AS DRILLING LUBRICANT

#22
20220098466
2022-03-31

Methods for producing an emulsifier suitable for use in an emulsion drilling fluid

#23
20220017806
2022-01-20

Epoxidized fatty acid methyl ester as primary emulsifier for invert emulsion oil based mud

#24
20220010189
2022-01-13

Rheology modifier with a fatty alcohol for organoclay-free invert emulsion drilling fluid systems

#25
20220002614
2022-01-06

METHOD FOR EXTRACTING PETROLEUM FROM UNDERGROUND DEPOSITS HAVING HIGH SALINITY

#26
20210332282
2021-10-28

Invert-emulsion drilling fluids and methods for reducing lost circulation in a subterranean formation using the invert-emulsion drilling fluids

#27
20210246352
2021-08-12

WELLBORE DRILLING COMPOSITIONS

#28
20210198177
2021-07-01

Methods and compositions incorporating alkyl polyglycoside surfactant for use in oil and/or gas wells

#29
20210179910
2021-06-17

LUBRICANT FOR DRILLING AND DRILL-IN FLUIDS

#30
20210164327
2021-06-03

Drilling fluid composition and method for cooling in high temperature formations

#31
20210147745
2021-05-20

Environmentally friendly hydrofracturing friction reducer for harsh conditions

#32
20210095178
2021-04-01

Drilling fluid comprising a lubricant

#33
20210087456
2021-03-25

Stable emulsion drilling fluids

#34
20210062063
2021-03-04

Micronized loss prevention material (LPM) for preventive loss control

#35
20210040374
2021-02-11

Processing produced fluids for fluid recovery

#36
20210032525
2021-02-04

Spacer fluids and cement slurries that include surfactants

#37
20200369940
2020-11-26

Quaternary ammonium emulsion breakers

#38
20200354624
2020-11-12

Methods For Unconventional Oil Recovery (UOR) By Water-Lipids or Lipids By-Products and Water-Solvent-Lipids or Lipids By-Products Emulsions Flooding

#39
20200339859
2020-10-29

Emulsifiers for direct emulsion drilling fluids

#40
20200291285
2020-09-17

Development of retarded acid system

#41
20200248064
2020-08-06

Environmentally friendly hydrofracturing friction reducer for harsh conditions

#42
20200248061
2020-08-06

Lubricants for water-based drilling fluids

#43
20200216740
2020-07-09

Reusable high performance water based drilling fluids

#44
20200172787
2020-06-04

Treatment fluids containing high density iodide brines

#45
20200165504
2020-05-28

Spacer fluid compositions that include surfactants

#46
20200157402
2020-05-21

Emulsifiers for direct emulsion drilling fluids

#47
20200140739
2020-05-07

Methods of using drilling fluid compositions with enhanced rheology

#48
20200087560
2020-03-19

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

#49
20200040247
2020-02-06

Development of anti-bit balling fluids

#50
20190315674
2019-10-17

Methods and compositions incorporating alkyl polyglycoside surfactant for use in oil and/or gas wells

#51
20190292432
2019-09-26

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

#52
20190292431
2019-09-26

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

#53
20190270925
2019-09-05

METHOD OF DRILLING A SUBTERRANEAN GEOLOGICAL FORMATION

#54
20190233708
2019-08-01

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

#55
20190233707
2019-08-01

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

#56
20190203096
2019-07-04

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

#57
20190203095
2019-07-04

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

#58
20190153289
2019-05-23

Emulsion, method for the production thereof and use thereof

#59
20180251667
2018-09-06

Composition comprising an alkoxylated amine compound and a carboxylic acid compound, use thereof in water in oil emulsions and process using the composition as or as part of a drilling fluid

#60
20180223180
2018-08-09

Wrinkled capsules for treatment of subterranean formations

#61
20180201823
2018-07-19

Drilling fluid for downhole electrocrushing drilling

#62
20180187066
2018-07-05

DELAYED REACTION TREATMENT ADDITIVE

#63
20170362489
2017-12-21

EMULSIONS CONTAINING ALKYL ETHER SULFATES AND USES THEREOF

#64
20170362488
2017-12-21

Dry Products for Wellbore Fluids and Methods of Use Thereof

#65
20170327724
2017-11-16

Fluorinated packer fluids

#66
20170275518
2017-09-28

Methods and compositions incorporating alkyl polyglycoside surfactant for use in oil and/or gas wells

#67
20170190956
2017-07-06

AQUEOUS EMULSIONS FOR CROSSLINKING

#68
20170015898
2017-01-19

Environmentally preferable microemulsion composition

#69
20160347984
2016-12-01

Completion Fluid for Reducing Friction Between Metal Surfaces

#70
20160311697
2016-10-27

MATERIALS AND METHODS FOR LIQUID WASTE CAPTURE

#71
20160230067
2016-08-11

Methods and materials to enhance high temperature rheology in invert emulsions

#72
20160002522
2016-01-07

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

#73
20150344765
2015-12-03

CLAY-SWELLING INHIBITOR, COMPOSITIONS COMPRISING SAID INHIBITOR AND PROCESSES USING SAID INHIBITOR

#74
20150210914
2015-07-30

Esters for drilling emulsions and metal working fluids

#75
20150096808
2015-04-09

Reusable high performance water based drilling fluids

#76
20150072904
2015-03-12

Oil based mud system

#77
20150060146
2015-03-05

RESERVOIR ACTIVATED EMULSION BREAKING FOR LOST CIRCULATION

#78
20150041138
2015-02-12

Agent for inhibiting the swelling of clays, compositions comprising said agent and methods implementing said agent

#79
20150014062
2015-01-15

Composition comprising an alkoxylated amine compound and a carboxylic acid compound, use thereof in water in oil emulsions and process using the composition as or as part of a drilling fluid

#80
20140206582
2014-07-24

Completion fluid for reducing friction between metal surfaces

#81
20140202709
2014-07-24

Method of completing a well using a friction reducing completion fluid

#82
20140202703
2014-07-24

Method of reducing corrosion on metal surfaces

#83
20140158360
2014-06-12

DRAG REDUCING AGENTS FOR OIL- AND SYNTHETIC-BASED FLUIDS

#84
20140090897
2014-04-03

INVERT WELLBORE FLUID

#85
20140024560
2014-01-23

DRILLING FLUID USING SURFACTANT PACKAGE

#86
20130303411
2013-11-14

Methods and materials to enhance high temperature rheology in invert emulsions

#87
20130203636
2013-08-08

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

#88
20130045896
2013-02-21

Emulsified polymer drilling fluid and methods of preparation

#89
20120318515
2012-12-20

Method of inhibiting or controlling release of well treatment agent

#90
20120264657
2012-10-18

Emulsion Stabilizing Agents for Drilling and Completion Fluids

#91
20120247778
2012-10-04

Completion fluid with friction reduction

#92
20120208726
2012-08-16

COMPOSITION AND METHOD FOR REMOVING FILTER CAKE

#93
20120080232
2012-04-05

Emulsion-based cleaning composition for oilfield applications

#94
20120073817
2012-03-29

Tethered polymers used to enhance the stability of microemulsion fluids

#95
20120004146
2012-01-05

Surfactant additives used to retain producibility while drilling

#96
20120000708
2012-01-05

Surfactant additives used to retain producibility while drilling

#97
20110230376
2011-09-22

Emulsified polymer drilling fluid and methods of preparation

#98
20110177981
2011-07-21

Wellbore fluids comprising poly(trimethylene ether) glycol polymers

#99
20110160103
2011-06-30

Compressible packer fluids and methods of making and using same

#100
20110036579
2011-02-17

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

#101
20110036572
2011-02-17

Methods for swelling swellable elements in a portion of a well using an oil-in-water emulsion

#102
20110030961
2011-02-10

Treatment of Fluids that Increase in Viscosity at or Above a Threshold Temperature and Methods of Formulating and Using Such Fluids

#103
20110015101
2011-01-20

Stabilization of emulsions containing resinous material for use in the field of oil or gas well treatments

#104
20110009299
2011-01-13

EMULSION STABILIZING AGENTS FOR DRILLING AND COMPLETION FLUIDS

#105
20100331191
2010-12-30

Surfactant compounds

#106
20100326660
2010-12-30

USE OF DIRECT EPOXY EMULSIONS FOR WELLBORE STABILIZATION

#107
20100317550
2010-12-16

Drilling fluid and process of making the same

#108
20100317549
2010-12-16

Emulsifier blend

#109
20100305009
2010-12-02

Oligoglyercol fatty acid ester additives for water-based drilling fluids

#110
20100256021
2010-10-07

Oligoglycerol fatty acid ester thickeners for oil-based drilling fluids

#111
20100216670
2010-08-26

Water-based fluid for preventing the formation of W/O emulsions or for resolving W/O emulsions already formed in porous matrices

#112
20100137168
2010-06-03

Nanoemulsions

#113
20100113309
2010-05-06

Method of reducing the viscosity of hydrocarbon fluids

#114
20100029516
2010-02-04

FIBER ASSISTED EMULSION SYSTEM

#115
20100022421
2010-01-28

Process for preparing thermally stable oil-in-water and water-in-oil emulsions

#116
20100016179
2010-01-21

Wellbore fluid comprising at least one polymer containing pendant alkyl groups

#117
20090291861
2009-11-26

WELLBORE FLUID

#118
20090291859
2009-11-26

Drilling fluid additive

#119
20090247428
2009-10-01

Wellbore fluid comprising sulfonated copolymers with pendant alkyl groups

#120
20090197781
2009-08-06

Wellbore Fluids Comprising Poly(trimethylene ether) glycol Polymers

#121
20080194795
2008-08-14

Oxidized and maleated compounds and compositions

#122
20080194429
2008-08-14

Process for minimizing breaking of emulsion type drilling fluid systems, emulsion type drilling fluid systems, and spotting fluids

#123
20080179570
2008-07-31

Maleated and oxidized fatty acids

#124
20080153717
2008-06-26

METHODS OF FORMING AND USING AN IN SITU HEAVY HYDROCARBON EMULSION

#125
20080026954
2008-01-31

Emulsified polymer drilling fluid and methods of preparation

#126
20070219098
2007-09-20

EMULSIFIERS FOR DRILLING FLUIDS

#127
20070219097
2007-09-20

Emulsifiers For Drilling Fluids

#128
20070049500
2007-03-01

Borehole treating substance containing ether carboxylic acids

#129
20060278437
2006-12-14

Fluid loss reducer for high temperature high pressure water based-mud application

#130
20060258543
2006-11-16

Degradable surfactants and methods for use

#131
20060240993
2006-10-26

Fluid loss reducer for high temperature high pressure water based-mud application

#132
20050209107
2005-09-22

Composition and process for the treatment of hydrogen sulfide

#133
20050202978
2005-09-15

Polymer-based, surfactant-free, emulsions and methods of use thereof

#134
20050202977
2005-09-15

Surfactant-free emulsions and methods of use thereof

#135
20050175654
2005-08-11

Fiber assisted emulsion system

#136
20050090405
2005-04-28

Vermiculture compositions

#137
20050014893
2005-01-20

Tris(hydroxymethyl) acrylamidomethane polymer, inverse latex and microlatex containing same, use of said polymer, inverse latex and microlatex

#138
16350964
2020-03-31

Process and composition for sand and proppant flowback

#139
15488941
2017-10-10

Environment-friendly water-based drilling fluid applicable to horizontal shale gas wells

#140
15136496
2016-12-27

Drilling fluid additive composition and super high temperature super high density clay-free oil-in-water drilling fluid