ClassID:

104332

C09K8/605 - 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; Compositions for stimulating production by acting on the underground formation containing biocides

Recent Application in this class:
#1
20260146197
2026-05-28

USE OF PEROXY GLUCONIC ACID IN VARIOUS TREATMENT FLUIDS

#2
20260062604
2026-03-05

INFUSED AND COATED PROPPANT CONTAINING CHEMICAL TREATMENT AGENTS AND METHODS OF USING SAME

#3
20250341148
2025-11-06

REDUCING METHANE AND METHANE PRODUCTION IN ORGANIC WASTE WELLS

#4
20250230352
2025-07-17

SYSTEMS AND METHODS FOR STORING AN ENERGY- STORAGE FLUID WITHIN A SUBTERRANEAN FORMATION HAVING SUPPRESSED MICROBIAL ACTIVITY

#5
20250089711
2025-03-20

NOVEL ENVIRONMENTALLY FRIENDLY BIOCIDAL QUATERNIZED AMINE COMPOUND

#6
20240392653
2024-11-28

AUTONOMOUS CHEMICAL TREATMENT SYSTEM AND METHOD FOR DRILLING AND COMPLETION RIGS

#7
20240124763
2024-04-18

Stimulation of Wells in Nano-Darcy Shale Formations

#8
20240084192
2024-03-14

FLOWBACK AID FOR FRACTURING FLUIDS

#9
20240018848
2024-01-18

Autonomous chemical treatment system and method for drilling and completion rigs

#10
20240002675
2024-01-04

Identification and characterization of novel corrosion inhibitor molecules

#11
20230399562
2023-12-14

Infused and coated proppant containing chemical treatment agents and methods of using same

#12
20230287773
2023-09-14

Nitrate treatment for injectivity improvement

#13
20230272263
2023-08-31

Compositions and Methods for Paraffin Liquefaction and Enhanced Oil Recovery Using Concentrated Acids

#14
20230212454
2023-07-06

SYSTEM, METHOD AND COMPOSITION FOR FRACTURING A SUBTERRANEAN FORMATION

#15
20230083037
2023-03-16

Process fluid with environmentally friendly biostabilisator

#16
20230071077
2023-03-09

Biocide composition and use thereof

#17
20230026695
2023-01-26

Biocide blend for treating wellbores

#18
20220290038
2022-09-15

RESIN COATED PROPPANTS WITH ANTIMICROBIAL ADDITIVES

#19
20220267612
2022-08-25

Identification and characterization of novel corrosion inhibitor molecules

#20
20220135870
2022-05-05

Stimulation of wells in nano-darcy shale formations

#21
20220073813
2022-03-10

Infused and coated proppant containing chemical treatment agents and methods of using same

#22
20220010200
2022-01-13

COATED PROPPANTS AND NANITES AND METHODS OF MAKING AND USE OF COATED PROPPANTS AND NANITES

#23
20210340430
2021-11-04

Biocide composition and use thereof

#24
20210317361
2021-10-14

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

#25
20210269308
2021-09-02

CHLORINE DIOXIDE PRECURSOR AND METHODS OF USING SAME

#26
20210238466
2021-08-05

Use of a process fluid with an environmentally compatible biostabilizer in a geothermal borehole

#27
20210230478
2021-07-29

PARTICULATE COMPOSITIONS CONTAINING OIL FIELD CHEMICALS

#28
20210222058
2021-07-22

SYSTEM, METHOD AND COMPOSITION FOR FRACTURING A SUBTERRANEAN FORMATION

#29
20210214603
2021-07-15

Oil-based slurries and methods for making

#30
20210179927
2021-06-17

Well treatment fluids composition

#31
20210171822
2021-06-10

In situ H2S scavenger additive generation

#32
20210148212
2021-05-20

TREATMENT SYSTEMS AND METHODS USING ENCAPSULATED CORROSIVE FLUIDS

#33
20210130678
2021-05-06

Compositions useful for diverting or stopping fluids in subterranean operations

#34
20210095190
2021-04-01

Rotary steerable drilling tool and method

#35
20210017567
2021-01-21

Assessment of biological contamination and biological contamination treatment

#36
20200299560
2020-09-24

Treatment methods using aqueous fluids containing oil-soluble treatment agents

#37
20200224082
2020-07-16

Stimulation of wells in nano-darcy shale formations

#38
20200165465
2020-05-28

Identification and characterization of novel corrosion inhibitor molecules

#39
20200157417
2020-05-21

Delivery system for oil-soluble well treatment agents and methods of using the same

#40
20200148942
2020-05-14

Compositions and methods for delayed crosslinking in hydraulic fracturing fluids

#41
20200140744
2020-05-07

STIMULATING WELLS USING CO2, WATER BLOCK REMOVING AGENTS, AND/OR BREAKERS TO IMPROVE WELL PRODUCTION

#42
20200063028
2020-02-27

CAPSULES, SYSTEMS AND METHODS FOR TARGETED DELIVERY OF CHEMICALS INTO MULTIPHASE ENVIRONMENTS

#43
20200024508
2020-01-23

Methods and treatment fluids for microfracture creation and microproppant delivery in subterranean formations

#44
20190352558
2019-11-21

Rotary steerable drilling tool and method

#45
20190315638
2019-10-17

Enhanced kill of microorganisms

#46
20190242229
2019-08-08

NANOEMULSIONS FOR USE IN SUBTERRANEAN FRACTURING TREATMENTS

#47
20190234184
2019-08-01

Method of inhibiting deposition of contaminants onto a metallic surface with a surface modifying treatment agent

#48
20190202941
2019-07-04

Phosphonated polysaccharides and gels and process for making same

#49
20190169490
2019-06-06

Coated proppants and nanites and methods of making and use of coated proppants and nanites

#50
20190144742
2019-05-16

Friction reducers and well treatment fluids

#51
20190144738
2019-05-16

Proppant coatings containing antimicrobial agents

#52
20190128791
2019-05-02

Processes and systems for characterizing and optimizing fracturing fluids

#53
20190100691
2019-04-04

Treatment of circulating water systems including well treatment fluids for oil and gas applications

#54
20190023975
2019-01-24

Biocide composition and use thereof

#55
20180371307
2018-12-27

Use of a process fluid with an environmentally compatible biostabilizer in a geothermal borehole

#56
20180362841
2018-12-20

SYSTEM, METHOD, AND COMPOSITION FOR FRACTURING A SUBTERRANEAN FORMATION

#57
20180355240
2018-12-13

Systems and methods for breaking friction reducers in-situ

#58
20180355238
2018-12-13

Treatment fluids comprising viscosifying agents and methods of using the same

#59
20180305609
2018-10-25

ENCAPSULATED ADDITIVES FOR USE IN SUBTERRANEAN FORMATION OPERATIONS

#60
20180282615
2018-10-04

System and methods for delivery of multiple highly interactive stimulation treatments in single dose and single pumping stage

#61
20180237688
2018-08-23

Infused and coated proppant containing chemical treatment agents and methods of using same

#62
20180223178
2018-08-09

RENEWABLE DIESEL BASE FLUIDS FOR USE IN SUBTERRANEAN FORMATION OPERATIONS

#63
20180215995
2018-08-02

Controlled release of well treatment agents into oil wells

#64
20180179858
2018-06-28

Methods of microbial measuring and control

#65
20180155613
2018-06-07

Stimulation of wells in nano-darcy shale formations

#66
20180100097
2018-04-12

Surfactant assisted oil recovery using alcohol ether sulfonates and cationic surfactants

#67
20180099882
2018-04-12

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

#68
20180086972
2018-03-29

Multifunctional proppant for fracturing applications

#69
20180086961
2018-03-29

Delayed-release additives in a degradable matrix

#70
20180044572
2018-02-15

Flowback aid for fracturing fluids

#71
20180030340
2018-02-01

Methods of preparing treatment fluids comprising anhydrous ammonia for use in subterranean formation operations

#72
20180016488
2018-01-18

Compositions and methods for delayed crosslinking in hydraulic fracturing fluids

#73
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

#74
20170306219
2017-10-26

CONTROLLED RELEASE OF CHEMICALS IN OILFIELD OPERATIONS

#75
20170298710
2017-10-19

Multi-functional surfactant complexes for use in subterranean formations

#76
20170292060
2017-10-12

Well treatment material for slow release of biocide

#77
20170267916
2017-09-21

CHEMICAL SUSPENSIONS FOR PRECISE CONTROL OF HYDROCARBON RESERVOIR TREATMENT FLUIDS

#78
20170234127
2017-08-17

Methods and systems for monitoring well integrity and increasing the lifetime of a well in a subterranean formation

#79
20170210976
2017-07-27

Perforation balls and methods of using the same

#80
20170210966
2017-07-27

Clay stabilizing and methods of use with quaternary ammonium salts

#81
20170198210
2017-07-13

Composite comprising well treatment agent and/or a tracer adhered onto a calcined substrate of a metal oxide coated core and a method of using the same

#82
20170191357
2017-07-06

Methods and compositions for suppressing bacterial growth in a subterranean environment

#83
20170158949
2017-06-08

Well-treatment fluids composition

#84
20170137700
2017-05-18

Low residue, high salinity fracturing fluids

#85
20170137634
2017-05-18

Identification and characterization of novel corrosion inhibitor molecules

#86
20170088770
2017-03-30

Friction reducers and well treatment fluids

#87
20170088769
2017-03-30

AQUEOUS GUAR COMPOSITIONS FOR USE IN OIL FIELD AND SLICKWATER APPLICATIONS

#88
20170030819
2017-02-02

Processes and systems for characterizing and optimizing fracturing fluids

#89
20170002260
2017-01-05

Biocidal composition

#90
20170002259
2017-01-05

Microbial viscosity breaker compositions

#91
20170000130
2017-01-05

Method for treating mineral slurries with a biocide

#92
20170000129
2017-01-05

Method for treating water used in oil field applications to inhibit bacterial growth with methylammonium monomethyldithiocarbamate

#93
20160362502
2016-12-15

Phosphonated polysaccharides and gels and process for making same

#94
20160312110
2016-10-27

Fracturing fluid

#95
20160298021
2016-10-13

Methods and compositions for using temporary, slow degrading, particulate agents in a subterranean formation

#96
20160298019
2016-10-13

Methods and compositions for using temporary, slow degrading, particulate agents in a subterranean formation

#97
20160280988
2016-09-29

APPLICATION OF CHLORINE DIOXIDE TO SUBSURFACE WELLS

#98
20160272868
2016-09-22

High-temperature high-pressure (HTHP) stable synthetic polymer for water based oil-well servicing fluids

#99
20160251571
2016-09-01

Resin coated proppants with antimicrobial additives

#100
20160222275
2016-08-04

Wellbore fluid additives of fibrillated fibers and methods of use

#101
20160186047
2016-06-30

Fluid composition and method for stimulation in the field of oil and gas production

#102
20160177174
2016-06-23

Process for making and supplying a high quality fracturing fluid

#103
20160137904
2016-05-19

PROPPANTS AND METHODS OF USE THEREOF

#104
20160137535
2016-05-19

Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water

#105
20160135470
2016-05-19

Antimicrobial articles of manufacture produced from masterbatches

#106
20160075941
2016-03-17

Infused and coated proppant containing chemical treatment agents and methods of using same

#107
20160029634
2016-02-04

Microbiocides and uses thereof

#108
20160017209
2016-01-21

Process for treating a wastewater stream produced by hydrocarbon production operations for repurposing as a disinfectant for hydrocarbon production operations

#109
20150329387
2015-11-19

SYSTEMS AND METHODS FOR GENERATING HALOAMINES AND APPLICATION THEREOF IN OIL AND GAS OPERATIONS

#110
20150300131
2015-10-22

Self-degradable hydraulic diversion systems and methods for making and using same

#111
20150292308
2015-10-15

Stimulation of wells in nano-darcy shale formations

#112
20150275634
2015-10-01

Surfactant assisted oil recovery using alcohol ether sulfonates and cationic surfactants

#113
20150218437
2015-08-06

PERACETIC ACID OIL-FIELD BIOCIDE AND METHOD

#114
20150197686
2015-07-16

Treatment fluids comprising viscosifying agents and methods of using the same

#115
20150175877
2015-06-25

ENVIRONMENTALLY ACCEPTABLE MULTIFUNCTIONAL ADDITIVE

#116
20150157024
2015-06-11

BIOCIDAL ALDEHYDE COMPOSITION FOR WATER MANAGEMENT

#117
20150141301
2015-05-21

PERACETIC ACID OIL-FIELD BIOCIDE AND METHOD

#118
20150141300
2015-05-21

Fluorous additives for use in a fluorous-based treatment fluid

#119
20150083397
2015-03-26

Method of inhibiting fouling on a metallic surface using a surface modifying treatment agent

#120
20150068744
2015-03-12

Fluid mobility modifiers for increased production in subterranean formations

#121
20150065403
2015-03-05

Chlorine dioxide generator for the efficient generation of chlorine dioxide in dilute solutions

#122
20150041131
2015-02-12

Methods and compositions for using temporary, slow degrading, particulate agents in a subterranean formation

#123
20150038471
2015-02-05

Process for preventing or mitigating biofouling

#124
20150000910
2015-01-01

Methods for improved proppant suspension in high salinity, low viscosity subterranean treatment fluids

#125
20140305650
2014-10-16

Choline-based crosslinker compositions for fracturing fluids

#126
20140303045
2014-10-09

Biocidal Systems and Methods of Use

#127
20140171345
2014-06-19

Well treatment composites for use in well treatment fluids

#128
20140128297
2014-05-08

System and Method for Injecting Peracetic Acid

#129
20140087978
2014-03-27

Methods of converting an inactive biocide into an active biocide using a chemical reaction

#130
20140080792
2014-03-20

Treatment method for a hydrocarbon-containing system using a biocide

#131
20140060841
2014-03-06

Fluorous additives for use in a fluorous-based treatment fluid

#132
20140011716
2014-01-09

Process for disinfecting and stabilizing production water using in-situ hypobromous acid generation

#133
20130312974
2013-11-28

Controlling hydrogen sulfide production in oilfield operations

#134
20130264293
2013-10-10

Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water

#135
20130259743
2013-10-03

Use of peracetic acid/hydrogen peroxide and peroxide-reducing enzymes for treatment of drilling fluids, frac fluids, flowback water and disposal water

#136
20130225675
2013-08-29

BACTERIAL CONTROL OF WATER BASED FLUIDS DURING SUBSURFACE INJECTION AND SUBSEQUENT RESIDENCE TIME IN THE SUBTERRANEAN FORMATION

#137
20130190214
2013-07-25

Biocidal system and methods of use

#138
20130045052
2013-02-21

System and method for treating an excavation activity

#139
20130029884
2013-01-31

BIOCIDE FORMULATIONS

#140
20120289436
2012-11-15

Methods for controlling depolymerization of polymer compositions

#141
20120285693
2012-11-15

Controlled release biocides in oilfield applications

#142
20120252706
2012-10-04

Method of using composites in the treatment of wells

#143
20120244228
2012-09-27

Chlorine dioxide precursor and methods of using same

#144
20120157356
2012-06-21

Hydraulic fracturing with slick water from dry blends

#145
20120157354
2012-06-21

FRICTION REDUCER

#146
20120073821
2012-03-29

Methods for reducing biological load in subterranean formations

#147
20120034313
2012-02-09

Microbiocide/Sulfide Control Blends

#148
20110071058
2011-03-24

Composition and method for slickwater application

#149
20100307757
2010-12-09

AQUEOUS SOLUTION FOR CONTROLLING BACTERIA IN THE WATER USED FOR FRACTURING

#150
20100218950
2010-09-02

BIOCIDE FOR WELL STIMULATION AND TREATMENT FLUIDS

#151
20100204068
2010-08-12

Methods for controlling depolymerization of polymer compositions

#152
20100190666
2010-07-29

Method for treating fracturing water

#153
20100160449
2010-06-24

Oil-field biocide method utilizing a peracid

#154
20090229827
2009-09-17

Treatment fluids having biocide and friction reducing properties and associated methods

#155
20090062156
2009-03-05

Methods of treating a subterranean formation including a biocidal treatment

#156
20080032903
2008-02-07

Biocide for well stimulation and treatment fluids

#157
20080029266
2008-02-07

Biocide for well stimulation and treatment fluids

#158
20080004189
2008-01-03

EFFERVESCENT BIOCIDE COMPOSITIONS FOR OILFIELD APPLICATIONS

#159
20060281167
2006-12-14

Bacteria-based and enzyme-based mechanisms and products for viscosity reduction breaking of viscoelastic fluids

#160
19013691
2026-03-17

Hydrogen production from iron-rich formations

#161
17844731
2023-10-10

Bionics-based efficiently transported and packed proppant and preparation method thereof

#162
17315971
2022-07-12

One-component type multi-functional fracturing fluid additive and process for preparing the same