ClassID:

104268

C09K8/20 - 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 Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives

Sub-classes:
Recent Application in this class:
#1
20240360353
2024-10-31

Non-greasing lubricant for high salinity fluids

#2
20220389123
2022-12-08

AMINE-FUNCTIONALIZED SACCHARIDE POLYMERS PREPARED BY HYPOCHLORITE OXIDATION

#3
20210032525
2021-02-04

Spacer fluids and cement slurries that include surfactants

#4
20200407621
2020-12-31

EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

#5
20200291285
2020-09-17

Development of retarded acid system

#6
20200283673
2020-09-10

Thermosensitive self-plugging bentonite and preparation method thereof and water-based drilling fluid

#7
20200248061
2020-08-06

Lubricants for water-based drilling fluids

#8
20200165504
2020-05-28

Spacer fluid compositions that include surfactants

#9
20200140739
2020-05-07

Methods of using drilling fluid compositions with enhanced rheology

#10
20200095491
2020-03-26

Development of anti-bit balling fluids

#11
20200095270
2020-03-26

Bioadhesives

#12
20200087560
2020-03-19

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

#13
20200040247
2020-02-06

Development of anti-bit balling fluids

#14
20190309210
2019-10-10

Development of anti-bit balling fluids

#15
20190292432
2019-09-26

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

#16
20190292431
2019-09-26

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

#17
20190233708
2019-08-01

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

#18
20190233707
2019-08-01

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

#19
20190218871
2019-07-18

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

#20
20190218870
2019-07-18

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

#21
20190218869
2019-07-18

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

#22
20190203096
2019-07-04

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

#23
20190203095
2019-07-04

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

#24
20190092996
2019-03-28

DISPERSANT IN CEMENT FORMULATIONS FOR OIL AND GAS WELLS

#25
20180320063
2018-11-08

Development of retarded acid system

#26
20180320050
2018-11-08

Methods of using drilling fluid compositions with enhanced rheology

#27
20180312439
2018-11-01

Dispersant in cement formulations for oil and gas wells

#28
20180282216
2018-10-04

Dispersant in cement formulations for oil and gas wells

#29
20180223175
2018-08-09

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

#30
20180223169
2018-08-09

Spacer fluid compositions that include surfactants

#31
20180223168
2018-08-09

Spacer fluids and cement slurries that include surfactants

#32
20180223167
2018-08-09

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

#33
20180223166
2018-08-09

Invert emulsion based drilling fluid and methods of using same

#34
20180223165
2018-08-09

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

#35
20180223162
2018-08-09

Development of anti-bit balling fluids

#36
20180223161
2018-08-09

Development of anti-bit balling fluids

#37
20180223160
2018-08-09

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

#38
20180223159
2018-08-09

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

#39
20180223158
2018-08-09

Drilling fluid compositions with enhanced rheology and methods of using same

#40
20180223156
2018-08-09

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

#41
20180223153
2018-08-09

Lubricants for water-based drilling fluids

#42
20180222797
2018-08-09

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

#43
20180222796
2018-08-09

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

#44
20180155600
2018-06-07

Hydro-fracking method using an aloe vera fracturing fluid

#45
20180037794
2018-02-08

Surfactant compositions

#46
20180037598
2018-02-08

Methods of making and using lignin derivatives

#47
20170275518
2017-09-28

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

#48
20170247597
2017-08-31

Method for treating subterranean formations

#49
20160264836
2016-09-15

Oil and gas treatment composition comprising hydroxyethyl cellulose and crosslinked polyvinylpyrrolidone

#50
20160083641
2016-03-24

Solids free gellable treatment fluids

#51
20150353806
2015-12-10

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

#52
20150210912
2015-07-30

Method for reducing fluid loss during drilling of a hydrocarbon formation using a water-based drilling fluid composition having a multifunctional mud additive

#53
20150060072
2015-03-05

METHODS OF TREATMENT OF A SUBTERRANEAN FORMATION WITH COMPOSITE POLYMERIC STRUCTURES FORMED IN SITU

#54
20140357533
2014-12-04

DRILLING FLUIDS COMPRISING FARNESANE AND/OR FARNESENE

#55
20140315766
2014-10-23

Methods and compositions of treating a subterranean formation with an optimized treatment fluid

#56
20140315763
2014-10-23

Oil based concentrated slurries and methods for making and using same

#57
20130065798
2013-03-14

Water-based drilling fluid composition having a multifunctional mud additive for reducing fluid loss during drilling

#58
20110272139
2011-11-10

SYSTEM FOR DRILLING A WELLBORE

#59
20110118381
2011-05-19

Inverse emulsion polymers as lost circulation material

#60
20090175688
2009-07-09

Shale hydration inhibition agent and method of use

#61
20080318812
2008-12-25

Oil based concentrated slurries and methods for making and using same

#62
20080076681
2008-03-27

Shale hydration inhibition agent and method of use

#63
20070197399
2007-08-23

Ethoxylated raw cotton linters for completion and workover fluids

#64
20070012447
2007-01-18

Inverse emulsion polymers as lost circulation material

#65
20060234873
2006-10-19

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

#66
20060148655
2006-07-06

Use of a selected legume starch in an industrial fluid

#67
20060137878
2006-06-29

Drilling fluid additive and method

#68
20060073988
2006-04-06

Fast hydrating guar powder, method of preparation, and methods of use

#69
20060073985
2006-04-06

Shale hydration inhibition agent and method of use

#70
20060073984
2006-04-06

Shale hydration inhibition agent and method of use

#71
20060073983
2006-04-06

Shale hydration inhibition agent and method of use

#72
20060073982
2006-04-06

Shale hydration inhibition agent and method of use

#73
20060068994
2006-03-30

Fast hydrating guar powder, method of preparation, and methods of use

#74
20050113259
2005-05-26

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

#75
20050056464
2005-03-17

Drilling fluid apparatus and method