ClassID:

104262

C09K8/10 - 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 containing natural organic compounds, e.g. polysaccharides, or derivatives thereof Cellulose or derivatives thereof

Recent Application in this class:
#1
20250163766
2025-05-22

METHOD FOR USING DRILLING FLUID IN DRILLING OPERATIONS, DRILLING FLUID AND ITS USE

#2
20250122415
2025-04-17

MULTIFUNCTIONAL WASTE ADDITIVES FOR SUBTERRANEAN FORMATION TREATMENT FLUIDS, AND METHODS AND SYSTEMS RELATED THERETO

#3
20240376370
2024-11-14

METHOD FOR REMOVING A FILTER CAKE FROM A BOREHOLE

#4
20230272259
2023-08-31

Drilling fluid additives and fracturing fluid additives containing cellulose nanofibers and/or nanocrystals

#5
20230104709
2023-04-06

Well conditioning method for wireline logging using dedicated aqueous based drilling fluid composition

#6
20220002609
2022-01-06

Drilling fluid additives and fracturing fluid additives containing cellulose nanofibers and/or nanocrystals

#7
20210277151
2021-09-09

Processes for producing nanocellulose, and nanocellulose compositions produced therefrom

#8
20210221919
2021-07-22

Nanolignocellulose compositions and processes to produce these compositions

#9
20210179913
2021-06-17

Substituted saccharides or glycosides and use thereof in a drilling fluid composition

#10
20210148191
2021-05-20

Method of using delayed hydratable polymeric viscosifying agent in the treatment of a well or subterranean formation

#11
20210062064
2021-03-04

HIGH TEMPERATURE TREATMENT FLUID WITH NANOCELLULOSE

#12
20200377778
2020-12-03

Cellulose nanofibers in extended cement systems

#13
20200231859
2020-07-23

Water-soluble polymer shale inhibitors

#14
20200181472
2020-06-11

Functionalized nanosilica as shale inhibitor in water-based fluids

#15
20200172787
2020-06-04

Treatment fluids containing high density iodide brines

#16
20200001206
2020-01-02

Ultrasonic breaking of polymer-containing fluids for use in subterranean formations

#17
20190345371
2019-11-14

Petrified cellulosic materials as additives to treatment fluids

#18
20190249066
2019-08-15

DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS

#19
20190177598
2019-06-13

Acid-soluble plug forming rapidly dehydrating loss control slurry

#20
20190177597
2019-06-13

Acid-soluble plug forming rapidly dehydrating loss control slurry

#21
20190177596
2019-06-13

Acid-soluble plug forming rapidly dehydrating loss control slurry

#22
20190144731
2019-05-16

Loss circulation material for seepage to moderate loss control

#23
20190144730
2019-05-16

Loss circulation material for seepage to moderate loss control

#24
20190010377
2019-01-10

Functionalized nanosilica as shale inhibitor in water-based fluids

#25
20180298113
2018-10-18

NANOLIGNOCELLULOSE COMPOSITIONS AND PROCESSES TO PRODUCE THESE COMPOSITIONS

#26
20180171201
2018-06-21

Loss circulation material for seepage to moderate loss control

#27
20180163119
2018-06-14

Methods for treating a subterranean well

#28
20180163116
2018-06-14

Acid-soluble plug forming rapidly dehydrating loss control slurry

#29
20180118991
2018-05-03

Viscous water-based composition

#30
20180066173
2018-03-08

Asphalt water-based drilling fluid additive

#31
20180016486
2018-01-18

CROSSLINKED FLUID TREATMENT AND METHODS FOR FRACTURING UNDERGROUND FORMATIONS BASED ON FLOWBACK, PRODUCTION WATER, SEAWATER, FRESH WATER, AND MIXTURES OF SAME

#32
20170341979
2017-11-30

Additive of cellulose nanofibrils or nanocrystals and a second polymer

#33
20170327723
2017-11-16

WELLBORE FLUIDS FOR INCREASED WELLBORE STABILITY AND REDUCED TORQUE

#34
20170253786
2017-09-07

Additive of chemically-modified cellulose nanofibrils or cellulose nanocrystals

#35
20170247596
2017-08-31

Fluid loss additive package for shallow well drilling fluids

#36
20170240792
2017-08-24

DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS

#37
20170240791
2017-08-24

Curauá fibers as lost-circulation materials and fluid-loss additives in wellbore fluids

#38
20170233641
2017-08-17

Polymeric metal crosslinker for shear tolerant fracturing fluid application

#39
20170226407
2017-08-10

Composition comprising ultrafine cellulose fibers

#40
20170226399
2017-08-10

Subterranean formation processing composition comprising ultrafine cellulose fibers

#41
20170226398
2017-08-10

Composition comprising ultrafine cellulose fibers

#42
20170218250
2017-08-03

Functionalized nanosilica as shale inhibitor in water-based fluids

#43
20170210826
2017-07-27

PROCESSES FOR PRODUCING NANOCELLULOSE, AND NANOCELLULOSE COMPOSITIONS PRODUCED THEREFROM

#44
20170204318
2017-07-20

Modified hydroxyethyl cellulosic polymers for improved well bore fluids and related uses

#45
20170183561
2017-06-29

Well treatment fluids comprising cross-linkable polysaccharides

#46
20170183555
2017-06-29

Method for producing a suspension of microfibrillated cellulose, microfibrillated cellulose and its use

#47
20170121586
2017-05-04

Polymer-based drilling fluids containing non-biodegradable materials and methods for use thereof

#48
20160272869
2016-09-22

Treatment fluids and uses thereof

#49
20160264836
2016-09-15

Oil and gas treatment composition comprising hydroxyethyl cellulose and crosslinked polyvinylpyrrolidone

#50
20160230073
2016-08-11

Dual function internal breaker for crosslinked hydroxyethylcellulose

#51
20160168443
2016-06-16

NANOCELLULOSE MATERIALS FOR OILFIELD APPLICATIONS

#52
20160122615
2016-05-05

Water-based drilling fluid with cyclodextrin shale stabilizer

#53
20150368541
2015-12-24

DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS

#54
20150368540
2015-12-24

DRILLING FLUID ADDITIVES AND FRACTURING FLUID ADDITIVES CONTAINING CELLULOSE NANOFIBERS AND/OR NANOCRYSTALS

#55
20150267102
2015-09-24

DRILLING FLUIDS AND DRILLING FLUID ADDITIVES FOR TREATMENT OF BITUMEN IN WELLBORE CUTTINGS

#56
20150203737
2015-07-23

Plant derived cellulose compositions for use as drilling muds

#57
20150075792
2015-03-19

Method of cementing a well using delayed hydratable polymeric viscosifying agents

#58
20140148366
2014-05-29

High-pressure/high-temperature solids-free fluid system for drilling, completing and repairing petroleum and gas wells

#59
20140128295
2014-05-08

Water-based drilling fluid with cyclodextrin shale stabilizer

#60
20140066340
2014-03-06

Low Toxicity Viscosifier and Methods of Using the Same

#61
20130274149
2013-10-17

FLUIDS AND METHODS INCLUDING NANOCELLULOSE

#62
20130196883
2013-08-01

Cellulose nanowhiskers in well services

#63
20130053283
2013-02-28

Alternative ligand formulations for cellulose products

#64
20130035263
2013-02-07

Agent and composition for oilfield applications

#65
20120214712
2012-08-23

Methods of using polysaccharide based cement additives

#66
20120186877
2012-07-26

Modified Cellulosic Polymer for Improved Well Bore Fluids

#67
20110214860
2011-09-08

Clean Viscosified Treatment Fluids and Associated Methods

#68
20110214859
2011-09-08

Clean Viscosified Treatment Fluids and Associated Methods

#69
20100197527
2010-08-05

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

#70
20090291862
2009-11-26

Drilling fluid with circulation loss reducing additive package

#71
20090054270
2009-02-26

HYDROCOLLOID GUM COMPOSITIONS, METHODS OF FORMING THE SAME, AND PRODUCTS FORMED THEREFROM

#72
20080300150
2008-12-04

Methods of using polysaccharide based cement additives

#73
20080300149
2008-12-04

Polysaccharide based cement additives

#74
20080220993
2008-09-11

Stable sodium thiosulfate based fluidized polymer suspensions of hydroxyethyl cellulose for oilfield services

#75
20070161516
2007-07-12

FILTRATE REDUCER FOR DRILLING MUDS

#76
20070135312
2007-06-14

Solvent free fluidized polymer suspensions for oilfield servicing fluids

#77
20070135311
2007-06-14

Use of CMC in drilling fluids

#78
20060199742
2006-09-07

Water-soluble, low substitution hydroxyethylcellulose, derivatives thereof, process of making, and uses thereof

#79
20060182703
2006-08-17

Blocky hydroxyethylcellulose, derivatives thereof, process of making and uses thereof

#80
20060172893
2006-08-03

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

#81
20060169182
2006-08-03

Methods and compositions relating to the hydrolysis of water-hydrolysable materials

#82
20060108150
2006-05-25

Drilling and cementing with fluids containing zeolite

#83
20060079406
2006-04-13

Method of increasing the low shear rate viscosity of well drilling and servicing fluids containing calcined magnesia bridging solids, the fluids and methods of use

#84
20050148475
2005-07-07

Method and composition for improving performance of aqueous and polymer based fluids at high temperatures

#85
20050101491
2005-05-12

Cellulosic suspensions employing alkali formate brines as carrier liquid

#86
20050101490
2005-05-12

Cellulosic suspensions of alkali formate and method of using the same

#87
20050056464
2005-03-17

Drilling fluid apparatus and method