ClassID:

104272

C09K8/24 - 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 Polymers

Recent Application in this class:
#1
20250388800
2025-12-25

METHODS FOR FREEING DIFFERENTIALLY STUCK PIPES

#2
20250354048
2025-11-20

GEMINI SURFACTANT AS FOAMING AGENT FOR FOAM DRILLING

#3
20250346797
2025-11-13

POLYMERIC AMIDOAMINE EMULSIFIERS

#4
20250346795
2025-11-13

ACYLHYDRAZONE BOND-CONTAINING AMPHIPHOBIC POLYMER AND PREPARATION METHOD OF NANO AMPHIPHOBIC REVERSAL AGENT

#5
20250197709
2025-06-19

HIGH TEMPERATURE HIGH SALT LOW END RHEOLOGY MODIFIERS

#6
20250179342
2025-06-05

DRILLING FLUIDS INCLUDING A VISCOSIFIER, AND RELATED METHODS

#7
20250171675
2025-05-29

CROSSLINKED SYNTHETIC POLYMER-BASED RESERVOIR DRILLING FLUID

#8
20250136856
2025-05-01

POLYMER-BASED ADDITIVES FOR SHALE STABILIZATIONS, WELLBORE FLUID COMPOSITIONS COMPRISING SAID ADDITIVES, AND METHODS OF PRODUCING SAID COMPOSITIONS AND IMPROVING SHALE STABILIZATIONS USING SAID COMPOSITIONS

#9
20240360353
2024-10-31

Non-greasing lubricant for high salinity fluids

#10
20240301792
2024-09-12

MEASURING DRILLING FLUID PH WITH SMART POLYMERS

#11
20240247177
2024-07-25

Diluent with glycol ether for solids-control fluid in a wellbore

#12
20240191129
2024-06-13

WATER-BASED FRICTION-REDUCING SLURRY COMPOSITIONS, FORMATION TREATING FLUIDS THEREFROM, AND METHOD FOR MAKING AND USING SAME

#13
20240117738
2024-04-11

MEASURING BOTTOM-HOLE TEMPERATURE WITH SMART POLYMERS

#14
20240117737
2024-04-11

Measuring drilling fluid hydrogen sulfide with smart polymers

#15
20240110476
2024-04-04

Measuring drilling fluid pH with smart polymers

#16
20240101887
2024-03-28

Asphalt-like material and preparation method and use thereof as plugging agent, and water-based drilling fluid

#17
20240059949
2024-02-22

POLYMERIC AMIDOAMINE EMULSIFIERS

#18
20240043734
2024-02-08

High temperature high salt low end rheology modifiers

#19
20240018275
2024-01-18

SUBSTITUTED SCLEROGLUCAN, MANUFACTURING METHOD THEREFOR AND USE THEREOF

#20
20240010904
2024-01-11

High temperature and high salinity-resistant complementarily rigid-flexible plugging agent and method for preparing the same and water-based drilling fluid and use thereof

#21
20230383165
2023-11-30

Permanganate based hydrogen sulfide scavenging drilling fluid

#22
20230340172
2023-10-26

VINYL ALCOHOL POLYMER AND USE THEREOF

#23
20230141596
2023-05-11

Multifunctional fluorescent tags for subterranean applications

#24
20230140917
2023-05-11

Polymer nano-clays as multifunctional mud logging barcode tracers

#25
20230133053
2023-05-04

Bionic and dual-phobic high-performance water-based drilling fluid

#26
20230080032
2023-03-16

Tertiary amine-grafted silica nano-plugging agent and water-based drilling fluids

#27
20230072620
2023-03-09

Fluorescent barcoded tags for drilling depth correlation

#28
20220340803
2022-10-27

CROSSLINKED SYNTHETIC POLYMER-BASED RESERVOIR DRILLING FLUID

#29
20220298403
2022-09-22

Drilling fluid lubricants

#30
20220267693
2022-08-25

Lubricant formulation for multiple water-based muds

#31
20220243113
2022-08-04

DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

#32
20220235257
2022-07-28

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

#33
20220220356
2022-07-14

Polymeric amidoamine emulsifiers

#34
20220154062
2022-05-19

Cationic formation stabilizers compatible with anionic friction reducing polymers

#35
20220127523
2022-04-28

POLYMERIC SYSTEMS HAVING ENHANCED VISCOSITY AND PROPPANT TRANSPORT PROPERTIES

#36
20210404270
2021-12-30

High-intensity acoustic treatment of colloidal mineral suspensions for wellbore operations

#37
20210395598
2021-12-23

Water-based foamed system for perforating zones with low pressure and high temperature

#38
20210395596
2021-12-23

Suspension supporting additive for water-based drilling and completions fluids

#39
20210380863
2021-12-09

Anti-bit balling additive

#40
20210348046
2021-11-11

Saturated salt water drilling fluid of salt response type intelligent polymer and preparation method thereof

#41
20210309907
2021-10-07

Well treatment fluid having biodegradable fluid loss control agent

#42
20210222045
2021-07-22

COMPOSITIONS AND METHODS FOR WELLBORE STRENGTHENING APPLICATIONS

#43
20210189216
2021-06-24

Environment-friendly high-temperature resistant water-based drilling fluid plugging anti-sloughing agent, preparation method thereof and the water-based drilling fluid

#44
20210163807
2021-06-03

Nanometer plugging water-based drilling fluid and preparation method and use thereof

#45
20210147745
2021-05-20

Environmentally friendly hydrofracturing friction reducer for harsh conditions

#46
20210087455
2021-03-25

Methods and compositions for enhancing clay viscosifiers

#47
20210087454
2021-03-25

Degradable polymeric nanoparticles and uses thereof

#48
20210071059
2021-03-11

Cationic and anionic shale inhibitors and clay stabilizers

#49
20210032556
2021-02-04

Lubricants that include alkyl esters and fatty acids

#50
20210032525
2021-02-04

Spacer fluids and cement slurries that include surfactants

#51
20210017442
2021-01-21

Thixotropic sealing composition and injection thereof for use during drilling

#52
20210009888
2021-01-14

Cationic formation stabilizers compatible with anionic friction reducing polymers

#53
20200407621
2020-12-31

EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF

#54
20200399523
2020-12-24

Drilling fluids that include water-insoluble acid catalyst precursors

#55
20200399522
2020-12-24

Drilling fluids that include water-soluble acid catalyst precursors or reaction products of such and uses for such drilling fluids

#56
20200399521
2020-12-24

Drilling fluids that include water-soluble acid catalysts and uses for such

#57
20200339858
2020-10-29

Crosslinked polymer compositions and methods for use in subterranean formation operations

#58
20200325381
2020-10-15

Organophilic clay based drilling fluids containing Gemini surfactant and polyacrylamide

#59
20200317982
2020-10-08

Lost circulation material (LCM) pill for total loss control

#60
20200291285
2020-09-17

Development of retarded acid system

#61
20200283673
2020-09-10

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

#62
20200270503
2020-08-27

Method and materials to convert a drilling mud into a solid gel based lost circulation material

#63
20200248066
2020-08-06

Crosslinked polymer compositions for use in subterranean formation operations

#64
20200248064
2020-08-06

Environmentally friendly hydrofracturing friction reducer for harsh conditions

#65
20200248061
2020-08-06

Lubricants for water-based drilling fluids

#66
20200165504
2020-05-28

Spacer fluid compositions that include surfactants

#67
20200148933
2020-05-14

Buoyant particles designed for compressibility

#68
20200148932
2020-05-14

Method of designing compressible particles having buoyancy in a confined volume

#69
20200140739
2020-05-07

Methods of using drilling fluid compositions with enhanced rheology

#70
20200115613
2020-04-16

Temperature-resistant calcium-resistant water-based drilling fluid for oil and gas reservoir protection and use thereof

#71
20200115612
2020-04-16

Filtrate reducer for temperature-resistant calcium-resistant water-based drilling fluid used in oil and gas reservoir protection, drilling fluid, and uses thereof

#72
20200115611
2020-04-16

Plugging agent for temperature-resistant calcium-resistant water-based drilling fluid used in oil and gas reservoir protection, drilling fluid, and uses thereof

#73
20200095491
2020-03-26

Development of anti-bit balling fluids

#74
20200087560
2020-03-19

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

#75
20200040247
2020-02-06

Development of anti-bit balling fluids

#76
20190309210
2019-10-10

Development of anti-bit balling fluids

#77
20190292861
2019-09-26

Hybrid loss prevention material (LPM) for preventive and curative loss control

#78
20190292860
2019-09-26

Hybrid loss prevention material (LPM) for preventive and curative loss control

#79
20190292432
2019-09-26

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

#80
20190292431
2019-09-26

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

#81
20190241789
2019-08-08

Treatment fluids comprising recycled drilling cuttings and method of use

#82
20190233708
2019-08-01

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

#83
20190233707
2019-08-01

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

#84
20190203096
2019-07-04

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

#85
20190203095
2019-07-04

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

#86
20190169481
2019-06-06

Solid/liquid high film strength fluid lubricant

#87
20190136112
2019-05-09

Lubricant additives for water based drilling fluid

#88
20190136111
2019-05-09

COMPOSITION FOR DRILLING FLUID AND METHOD OF DRILLING A BOREHOLE

#89
20190127625
2019-05-02

Modified cellulose nanocrystals and their use in drilling fluids

#90
20190127624
2019-05-02

Modified asphalt particles and preparation method and use thereof

#91
20190119550
2019-04-25

Star-shaped polyacrylamide copolymer and preparation method thereof and drilling fluid including the copolymer

#92
20190092997
2019-03-28

Random copolymer and preparation method thereof, and drilling fluid

#93
20190078009
2019-03-14

Lubricant for water based drilling fluid

#94
20180371853
2018-12-27

Mixing system and method for producing a drilling fluid for ground drilling and use in producing a drilling fluid for ground drilling

#95
20180346804
2018-12-06

Crosslinked polymers derived from monomers having acryloyl and lactam moieties and sulfonic acid/sulfonate comonomers, compositions thereof, and applications thereof

#96
20180320063
2018-11-08

Development of retarded acid system

#97
20180320050
2018-11-08

Methods of using drilling fluid compositions with enhanced rheology

#98
20180312439
2018-11-01

Dispersant in cement formulations for oil and gas wells

#99
20180223175
2018-08-09

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

#100
20180223169
2018-08-09

Spacer fluid compositions that include surfactants

#101
20180223168
2018-08-09

Spacer fluids and cement slurries that include surfactants

#102
20180223166
2018-08-09

Invert emulsion based drilling fluid and methods of using same

#103
20180223165
2018-08-09

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

#104
20180223163
2018-08-09

Compositions and methods of making of shale inhibition fluids

#105
20180223161
2018-08-09

Development of anti-bit balling fluids

#106
20180223160
2018-08-09

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

#107
20180223156
2018-08-09

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

#108
20180223153
2018-08-09

Lubricants for water-based drilling fluids

#109
20180208824
2018-07-26

Water-based drilling fluid for protecting high-permeability reservoirs, and preparation method and use thereof

#110
20180208823
2018-07-26

Water-based drilling fluid for protecting fractured reservoirs, and preparation method and use thereof

#111
20180171208
2018-06-21

Method for producing polymers on the basis of acryloyldimethyltaurate, neutral monomers, and monomers with carboxylate groups

#112
20180118993
2018-05-03

RESERVOIR PROTECTING AGENT COMPOSITION FOR RESERVOIR WITH CRACKS, DRILLING FLUID CONTAINING THE SAME AND USE THEREOF

#113
20180022979
2018-01-25

Crosslinked polymer compositions and methods for use in subterranean formation operations

#114
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

#115
20180016485
2018-01-18

Barrier pills

#116
20180002593
2018-01-04

Crosslinked polymer compositions for use in subterranean formation operations

#117
20180002590
2018-01-04

IN SITU SWELLING OF WATER-SWELLABLE POLYMERS DOWNHOLE

#118
20170335162
2017-11-23

Salt-tolerant, thermally-stable rheology modifiers

#119
20170327734
2017-11-16

Crosslinked polymers including sulfonic acid groups or salts or esters thereof as viscosifiers and fluid loss additives for subterranean treatment

#120
20170275519
2017-09-28

In situ generation of nano-clay drilling fluid

#121
20170226397
2017-08-10

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#122
20170218252
2017-08-03

Oil field treatment fluids

#123
20170218251
2017-08-03

Polyvinyl alcohol-based shale inhibitor

#124
20170101573
2017-04-13

Crosslinked high molecular weight polymers for use in water-based drilling fluids

#125
20170037294
2017-02-09

Drilling fluid adjusting agent and drilling fluid using the same

#126
20170029330
2017-02-02

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#127
20160230072
2016-08-11

Gellable treatment fluids with clay-based gel retarders and related methods

#128
20160017207
2016-01-21

Internal olefin sulfonate composition

#129
20150368538
2015-12-24

High pressure high temperature (HPHT) aqueous drilling mud composition and process for preparing the same

#130
20150353807
2015-12-10

Polyaminopolyamide-epichlorohydrin resins for use as clay and shale inhibition agents for the drilling industry

#131
20150203736
2015-07-23

Comb polymer, method of preparing the same, and use thereof

#132
20150191640
2015-07-09

HIGH-TEMPERATURE HIGH-PRESSURE RESERVOIR DRILLING FLUID

#133
20150159070
2015-06-11

Drilling fluid additive

#134
20150060072
2015-03-05

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

#135
20150051119
2015-02-19

Polyester resin composition and molded article of same

#136
20150011439
2015-01-08

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#137
20140371113
2014-12-18

Drilling fluid processing

#138
20140367103
2014-12-18

Compositions and methods for completing subterranean wells

#139
20140353042
2014-12-04

Self-triggering lost circulation control in carbonate formation

#140
20140291028
2014-10-02

Methods of beneficiating drilling fluids comprising low- and high-quality clays

#141
20140151128
2014-06-05

LOW CONDUCTIVITY WATER BASED WELLBORE FLUID

#142
20140135238
2014-05-15

Water-based drilling fluids containing crosslinked polyacrylic acid

#143
20140080988
2014-03-20

Phosphonate-containing polymer and use thereof and phosphonate-containing polymer viscosity reducer for drilling fluid

#144
20140080985
2014-03-20

Acryloylmorpholine polymer and use thereof and filtrate reducer for drilling fluid

#145
20130324443
2013-12-05

Salt-tolerant, thermally-stable rheology modifiers

#146
20130172217
2013-07-04

Method for dispersing aqueous based drilling fluid for drilling subterranean boreholes

#147
20120329684
2012-12-27

Polymeric gel system and methods for making and using same in hydrocarbon recovery

#148
20120283149
2012-11-08

Compositions and methods for treatment of well bore tar

#149
20120202921
2012-08-09

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#150
20120202719
2012-08-09

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#151
20120196776
2012-08-02

Oil field treatment fluids

#152
20120157353
2012-06-21

Method of drilling a subterranean well with crosslinked polyacrylic acid

#153
20120132423
2012-05-31

Compositions and methods for treatment of well bore tar

#154
20120055673
2012-03-08

Method for dispersing aqueous based drilling fluid for drilling subterranean boreholes

#155
20120018226
2012-01-26

Method and biodegradable water based thinner composition for drilling subterranean boreholes with aqueous based drilling fluid

#156
20110180256
2011-07-28

CHROME FREE WATER-BASED WELLBORE FLUID

#157
20110118381
2011-05-19

Inverse emulsion polymers as lost circulation material

#158
20110105367
2011-05-05

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#159
20110092396
2011-04-21

Copolymer for shale stabilization and method of use

#160
20110061866
2011-03-17

Low conductivity water based wellbore fluid

#161
20110046025
2011-02-24

Low molecular weight graft copolymers for scale control

#162
20100319916
2010-12-23

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#163
20100206569
2010-08-19

Thermothickener polymer and surfactant composition and methods of employing the composition

#164
20100197530
2010-08-05

Oil field treatment fluids with viscosified brines

#165
20100197526
2010-08-05

Method for making particulate slurries and particulate slurry compositions

#166
20100116497
2010-05-13

Method of servicing a wellbore with a sealant composition comprising solid latex

#167
20100081584
2010-04-01

Compositions and methods for treatment of well bore tar

#168
20100065273
2010-03-18

Methods and materials for zonal isolation

#169
20100065269
2010-03-18

METHOD OF STABILIZING A WELL BORE OF A WELL PENETRATING A SUBTERRANEAN FORMATION

#170
20100035772
2010-02-11

Sealant compositions comprising solid latex

#171
20100016179
2010-01-21

Wellbore fluid comprising at least one polymer containing pendant alkyl groups

#172
20090305044
2009-12-10

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#173
20090294179
2009-12-03

METHOD OF CONTROLLING FLUID LOSS AND MATERIALS USEFUL THEREIN

#174
20090286698
2009-11-19

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#175
20090247428
2009-10-01

Wellbore fluid comprising sulfonated copolymers with pendant alkyl groups

#176
20090175688
2009-07-09

Shale hydration inhibition agent and method of use

#177
20090095534
2009-04-16

Compositions and methods for treatment of well bore tar

#178
20090020728
2009-01-22

METHOD FOR CONTROLLING THE THICKENING OF AQUEOUS SYSTEMS

#179
20080300151
2008-12-04

Oil-well cement fluid loss additive compostion

#180
20080251252
2008-10-16

Polymeric gel system and methods for making and using same in hydrocarbon recovery

#181
20080202749
2008-08-28

Polymeric gel system and use in hydrocarbon recovery

#182
20080110627
2008-05-15

Well treating method to prevent or cure lost-circulation

#183
20080076681
2008-03-27

Shale hydration inhibition agent and method of use

#184
20080020961
2008-01-24

Low Molecular Weight Graft Copolymers

#185
20070135312
2007-06-14

Solvent free fluidized polymer suspensions for oilfield servicing fluids

#186
20070129258
2007-06-07

High performance water-based drilling mud and method of use

#187
20070111901
2007-05-17

Method of servicing a wellbore with a sealant composition comprising solid latex

#188
20070111900
2007-05-17

Sealant compositions comprising solid latex

#189
20070105723
2007-05-10

Shale inhibition

#190
20070082823
2007-04-12

High performance water-based drilling mud and method of use

#191
20070066491
2007-03-22

Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications

#192
20070056730
2007-03-15

Well treating method to prevent or cure lost-circulation

#193
20070015669
2007-01-18

Method for making particulate slurries and particulate slurry compositions

#194
20070012447
2007-01-18

Inverse emulsion polymers as lost circulation material

#195
20060278437
2006-12-14

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

#196
20060254826
2006-11-16

Drilling method

#197
20060240993
2006-10-26

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

#198
20060178275
2006-08-10

Method and composition for preventing or treating lost circulation

#199
20060111245
2006-05-25

Environmentally friendly water based mud deflocculant/ thinner

#200
20060073985
2006-04-06

Shale hydration inhibition agent and method of use

#201
20060073984
2006-04-06

Shale hydration inhibition agent and method of use

#202
20060073983
2006-04-06

Shale hydration inhibition agent and method of use

#203
20060073982
2006-04-06

Shale hydration inhibition agent and method of use

#204
20060003899
2006-01-05

Drilling fluid and methods of use thereof

#205
20050256012
2005-11-17

Well drilling fluids

#206
20050187113
2005-08-25

High performance water-based mud system

#207
20050143511
2005-06-30

Use of weakly anionic copolymers as dispersing and/or grinding aid agent of an aqueous suspension of mineral materials

#208
20050096232
2005-05-05

High performance water based drilling fluids and method of use

#209
20050049149
2005-03-03

High performance water-based drilling mud and method of use

#210
20050014893
2005-01-20

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

#211
20050000731
2005-01-06

Method and apparatus for treating a productive zone while drilling

#212
19250126
2025-12-30

Polycarboxylate thinner for carbonate/bicarbonate contamination resistant water-based drilling fluid and preparation method and application thereof

#213
19204000
2026-03-31

Amphoteric amphiphiles for shale swelling inhibition in oil and gas reservoirs

#214
19070894
2025-07-29

Strong salt-resistant self-degradation plugging agent for water-based drilling fluid and preparation method therefor

#215
19032595
2025-09-16

Silicate water-based drilling fluid for coalbed methane wells and application thereof

#216
18951941
2025-08-12

Strongly adsorbed hyper-branched filtrate reducer for water-based drilling fluid with resistance to 240° C. and saturated salinity, preparation method therefor and use thereof

#217
18951901
2025-04-08

High density environmentally friendly polymer water-based drilling fluid with resistance to 240° C. and saturated salts, preparation method therefor and use thereof

#218
18824209
2024-12-31

Double-crosslinked thermal phase transition gel temporary plugging agent and application thereof

#219
17751785
2022-10-25

Mineral oil invert emulsion hydrogen sulfide mitigating drilling fluid and method of drilling subterranean geological formation

#220
17727063
2023-01-03

Leak-proof lost-circulation control water-based drilling fluid composition and preparation method and use thereof

#221
16911546
2020-11-10

Systems and methods of hydrating polymer additives

#222
16900084
2020-11-17

Systems and methods of polymerization under extensional flow conditions

#223
16743811
2020-11-10

Micro-nanometer plugging anti-collapse drilling fluid and preparation method and use thereof

#224
16742279
2020-11-10

Modified nano-silica plugging agent, water-based drilling fluid, and preparation method and use thereof

#225
16556566
2020-07-07

Systems and methods of hydrating polymer additives

#226
16523228
2020-01-14

Strong plugging drilling fluid composition and preparation method thereof, and use thereof

#227
16392395
2019-10-15

Super-amphiphobic strongly self-cleaning high-performance water-based drilling fluid and drilling method

#228
15952880
2019-03-19

Drilling fluid for inhibiting surface hydration of clay and preparation method thereof

#229
15928979
2019-03-26

Trimodal hybrid loss prevention material (LPM) for preventative and curative loss control

#230
15795799
2018-06-26

High-temperature cross-linking deep-well drilling fluid and preparation method thereof

#231
15795792
2018-03-27

Deep-well polysulfonate drilling fluid and preparation method thereof

#232
15489210
2017-10-17

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