obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Industry

CPC
C09K8/885

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

CCHEMISTRY METALLURGY C09Paints, dyes C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE C09K8/00Compositions for drilling of boreholes or wells Compositions for treating boreholes or wells

Current Industry

C09K8/885obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Industries

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Diverting materials for well stimulation
- Patent number 12,060,524
- Issue date Aug 13, 2024
- Saudi Arabian Oil Company
- Wenwen Li
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Superheated phase changing nanodroplets for hydrocarbon reservoir a...
- Patent number 11,932,810
- Issue date Mar 19, 2024
- Saudi Arabian Oil Company
- Jesus Manuel Felix Servin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Particles for carriers and tracers
- Patent number 11,932,812
- Issue date Mar 19, 2024
- ALCHEMY SCIENCES, INC.
- Erick Acosta
- G01 - MEASURING TESTING
Information Patent Grant
Supramolecular star-shaped polymer with beta-CD as core and prepara...
- Patent number 11,912,802
- Issue date Feb 27, 2024
- SOUTHWEST PETROLEUM UNIVERSITY
- Yongming Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyester diverting agents for low-temperature oil wells
- Patent number 11,898,096
- Issue date Feb 13, 2024
- Stepan Company
- Douglas Kip Hillshafer
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Friction reducers and well treatment fluids
- Patent number 11,814,582
- Issue date Nov 14, 2023
- ITALMATCH CHEMICALS GB LIMITED
- Jeffrey Frank Kramer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Flowback aid for fracturing fluids
- Patent number 11,807,811
- Issue date Nov 7, 2023
- Schlumberger Technology Corporation
- Samuel Danican
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Emulsions, treatment fluids and methods for treating subterranean f...
- Patent number 11,781,055
- Issue date Oct 10, 2023
- Kemira Oyj
- Paul Waterman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Superheated phase changing nanodroplets for hydrocarbon reservoir a...
- Patent number 11,708,524
- Issue date Jul 25, 2023
- Saudi Arabian Oil Company
- Jesus Manuel Felix Servin
- E21 - EARTH DRILLING MINING
Information Patent Grant
Controlling the formation of polymer-metal complexes in wellbore op...
- Patent number 11,639,464
- Issue date May 2, 2023
- Halliburton Energy Services, Inc.
- Hong Sun
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Siloxane surfactant additives for oil and gas applications
- Patent number 11,634,625
- Issue date Apr 25, 2023
- Flotek Chemistry, LLC
- Glenn S. Penny
- E21 - EARTH DRILLING MINING
Information Patent Grant
Polymer dispersions for wax inhibition during stimulation treatment
- Patent number 11,618,845
- Issue date Apr 4, 2023
- Rhodia Operations
- Pierre-Emmanuel Dufils
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fracturing fluid compositions and methods for making and using same
- Patent number 11,407,932
- Issue date Aug 9, 2022
- PfP Industries, LLC
- Asoke Kumar Deysarkar
- E21 - EARTH DRILLING MINING
Information Patent Grant
Aqueous delayed acid system for well stimulation
- Patent number 11,390,799
- Issue date Jul 19, 2022
- Baker Hughes Holdings LLC
- Ahmed S. Zakaria
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Cavitation of polymer-containing fluids for use in subterranean for...
- Patent number 11,279,870
- Issue date Mar 22, 2022
- Halliburton Energy Services, Inc.
- Preston Andrew May
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Silane-functionalized polyalkyleneimine clay stabilizer for treatme...
- Patent number 11,279,801
- Issue date Mar 22, 2022
- Halliburton Energy Services, Inc.
- Tatyana V. Khamatnurova
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Thermoassociative polymers in subterranean treatment fluids
- Patent number 11,279,863
- Issue date Mar 22, 2022
- Halliburton Energy Services, Inc.
- Nivika Rajendra Gupta
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
High temperature treatment fluids with nano-crosslinkers
- Patent number 11,268,016
- Issue date Mar 8, 2022
- Saudi Arabian Oil Company
- Ghaithan Al-Muntasheri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Treatment methods using aqueous fluids containing oil-soluble treat...
- Patent number 11,254,850
- Issue date Feb 22, 2022
- Baker Hughes Holdings LLC
- Sumit Bhaduri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Compositions and methods for cross-linking hydratable polymers usin...
- Patent number 11,248,163
- Issue date Feb 15, 2022
- PfP Industries LLC
- Asoke Kumar Deysarkar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Multifunctional friction reducers
- Patent number 11,198,811
- Issue date Dec 14, 2021
- Halliburton Energy Services, Inc.
- Liang Xin Xu
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Siloxane surfactant additives for oil and gas applications
- Patent number 11,149,189
- Issue date Oct 19, 2021
- Flotek Chemistry, LLC
- Glenn S. Penny
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Polyvinyl alcohol based diverting agents
- Patent number 11,118,105
- Issue date Sep 14, 2021
- Kuraray Co., Ltd.
- Ghebrehiwet Ghebremeskel
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method for reducing the permeability of a subterranean formation to...
- Patent number 11,111,431
- Issue date Sep 7, 2021
- Dow Global Technologies LLC
- Stephen M. Hoyles
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Emulsions, treatment fluids and methods for treating subterranean f...
- Patent number 10,899,955
- Issue date Jan 26, 2021
- Kemira Oyj
- Paul Waterman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Subterranean stimulation operations utilizing degradable pre-coated...
- Patent number 10,876,045
- Issue date Dec 29, 2020
- Halliburton Energy Services, Inc.
- Jeremy A. Holtsclaw
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Compositions and methods for cross-linking hydratable polymers usin...
- Patent number 10,870,791
- Issue date Dec 22, 2020
- PfP Industries LLC
- Asoke Deysarkar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method for a fracturing fluid system at high temperatures
- Patent number 10,815,419
- Issue date Oct 27, 2020
- CNPC USA Corporation
- Lulu Song
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Methods for controlling conductive aggregates
- Patent number 10,808,168
- Issue date Oct 20, 2020
- Halliburton Energy Services, Inc.
- Gladys Montenegro Galindo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fractures treatment
- Patent number 10,781,679
- Issue date Sep 22, 2020
- Schlumberger Technology Corporation
- Bruno Lecerf
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
PARTICLES FOR CARRIERS AND TRACERS
- Publication number 20240247184
- Publication date Jul 25, 2024
- Alchemy Sciences, Inc.
- Erick Acosta
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
WATER-BASED FRICTION-REDUCING SLURRY COMPOSITIONS, FORMATION TREATI...
- Publication number 20240191129
- Publication date Jun 13, 2024
- PfP INDUSTRIES LLC
- Madhukar Chetty
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLYESTER DIVERTING AGENTS FOR LOW-TEMPERATURE OIL WELLS
- Publication number 20240141225
- Publication date May 2, 2024
- Stepan Company
- Douglas Kip HILLSHAFER
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
FLOWBACK AID FOR FRACTURING FLUIDS
- Publication number 20240084192
- Publication date Mar 14, 2024
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Samuel DANICAN
- E21 - EARTH DRILLING MINING
Information Patent Application
DIVERTING MATERIALS FOR WELL STIMULATION
- Publication number 20230416600
- Publication date Dec 28, 2023
- Saudi Arabian Oil Company
- Wenwen Li
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
SUPERHEATED PHASE CHANGING NANODROPLETS FOR HYDROCARBON RESERVOIR A...
- Publication number 20230313025
- Publication date Oct 5, 2023
- Saudi Arabian Oil Company
- Jesus Manuel Felix Servin
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
SUPRAMOLECULAR STAR-SHAPED POLYMER WITH BETA-CD AS CORE AND PREPARA...
- Publication number 20230203227
- Publication date Jun 29, 2023
- SOUTHWEST PETROLEUM UNIVERSITY
- Yongming LI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PARTICLES FOR CARRIERS AND TRACERS
- Publication number 20230065802
- Publication date Mar 2, 2023
- Alchemy Sciences, Inc.
- Erick Acosta
- E21 - EARTH DRILLING MINING
Information Patent Application
METHODS AND COMPOSITIONS OF DISPERSIBLE FERROELECTRIC NANOPARTICLES...
- Publication number 20220282149
- Publication date Sep 8, 2022
- UTI Limited Partnership
- Simon TRUDEL
- B82 - NANO-TECHNOLOGY
Information Patent Application
Coated Proppants
- Publication number 20220275270
- Publication date Sep 1, 2022
- DOW GLOBAL TECHNOLOGIES LLC
- Praveen Agarwal
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLYESTER DIVERTING AGENTS FOR LOW-TEMPERATURE OIL WELLS
- Publication number 20220251441
- Publication date Aug 11, 2022
- Stepan Company
- Douglas Kip HILLSHAFER
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Silane-Functionalized Polyalkyleneimine Clay Stabilizer for Treatme...
- Publication number 20220162383
- Publication date May 26, 2022
- Halliburton Energy Services, Inc.
- Tatyana V. Khamatnurova
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLYMER DISPERSIONS FOR WAX INHIBITION DURING STIMULATION TREATMENT
- Publication number 20220041917
- Publication date Feb 10, 2022
- RHODIA OPERATIONS
- Pierre-Emmanuel Dufils
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
CONTROLLING THE FORMATION OF POLYMER-METAL COMPLEXES IN WELLBORE OP...
- Publication number 20220017816
- Publication date Jan 20, 2022
- Halliburton Energy Services, Inc.
- Hong SUN
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Composition and Method for Breaking Friction Reducing Polymer for W...
- Publication number 20210284901
- Publication date Sep 16, 2021
- David O. Trahan
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
THERMOASSOCIATIVE POLYMERS IN SUBTERRANEAN TREATMENT FLUIDS
- Publication number 20210246353
- Publication date Aug 12, 2021
- Halliburton Energy Services, Inc.
- Nivika Rajendra Gupta
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
FRACTURING FLUID COMPOSITIONS AND METHODS FOR MAKING AND USING SAME
- Publication number 20210222054
- Publication date Jul 22, 2021
- PfP INDUSTRIES, LLC
- Asoke Kumar Deysarkar
- E21 - EARTH DRILLING MINING
Information Patent Application
COMPOSITIONS AND METHODS FOR CROSS-LINKING HYDRATABLE POLYMERS USIN...
- Publication number 20210214604
- Publication date Jul 15, 2021
- PfP INDUSTRIES, LLC
- Asoke Kumar Deysarkar
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PICKERING EMULSIONS USED IN WELLBORE SERVICING FLUIDS AND METHODS
- Publication number 20210189227
- Publication date Jun 24, 2021
- Monica Rajendra Dandawate
- E21 - EARTH DRILLING MINING
Information Patent Application
CAVITATION OF POLYMER-CONTAINING FLUIDS FOR USE IN SUBTERRANEAN FOR...
- Publication number 20210171825
- Publication date Jun 10, 2021
- Halliburton Energy Services, Inc.
- Preston Andrew May
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CONVERTING INVERT EMULSIONS TO EMULSIONS USING POLYVALENT SALTS OF...
- Publication number 20210171826
- Publication date Jun 10, 2021
- ARC PRODUCTS, INC.
- Caroline VITEAUX
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
MULTIFUNCTIONAL FRICTION REDUCERS
- Publication number 20210155846
- Publication date May 27, 2021
- Multi-Chem Group, LLC
- Liang Xin Xu
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Emulsions, Treatment Fluids and Methods for Treating Subterranean F...
- Publication number 20210147741
- Publication date May 20, 2021
- KEMIRA OYJ
- Paul Waterman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
HIGH TEMPERATURE TREATMENT FLUIDS WITH NANO-CROSSLINKERS
- Publication number 20210062072
- Publication date Mar 4, 2021
- Saudi Arabian Oil Company
- Ghaithan Al-Muntasheri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Aqueous Delayed Acid System for Well Stimulation
- Publication number 20200399530
- Publication date Dec 24, 2020
- BAKER HUGHES, A GE COMPANY, LLC
- Ahmed S. Zakaria
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PROCESS FOR PRODUCING HYDROPHOBICALLY ASSOCIATING POLYACRYLAMIDES
- Publication number 20200347155
- Publication date Nov 5, 2020
- BASF SE
- Tobias Joachim ZIMMERMANN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
HIGH TEMPERATURE FRACTURING FLUIDS WITH NANO-CROSSLINKERS
- Publication number 20200325387
- Publication date Oct 15, 2020
- Saudi Arabian Oil Company
- Ghaithan Al-Muntasheri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Treatment Methods Using Aqueous Fluids Containing Oil-Soluble Treat...
- Publication number 20200299560
- Publication date Sep 24, 2020
- BAKER HUGHES, A GE COMPANY, LLC
- Sumit Bhaduri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
SILOXANE SURFACTANT ADDITIVES FOR OIL AND GAS APPLICATIONS
- Publication number 20200216749
- Publication date Jul 9, 2020
- Flotek Chemistry, LLC
- Glenn S. Penny
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLYVINYL ALCOHOL BASED DIVERTING AGENTS
- Publication number 20200071605
- Publication date Mar 5, 2020
- Kuraray Co., Ltd
- Ghebrehiwet GHEBREMESKEL
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Diverting materials for well stimulation

Superheated phase changing nanodroplets for hydrocarbon reservoir a...

Particles for carriers and tracers

Supramolecular star-shaped polymer with beta-CD as core and prepara...

Polyester diverting agents for low-temperature oil wells

Friction reducers and well treatment fluids

Flowback aid for fracturing fluids

Emulsions, treatment fluids and methods for treating subterranean f...

Superheated phase changing nanodroplets for hydrocarbon reservoir a...

Controlling the formation of polymer-metal complexes in wellbore op...

Siloxane surfactant additives for oil and gas applications

Polymer dispersions for wax inhibition during stimulation treatment

Fracturing fluid compositions and methods for making and using same

Aqueous delayed acid system for well stimulation

Cavitation of polymer-containing fluids for use in subterranean for...

Silane-functionalized polyalkyleneimine clay stabilizer for treatme...

Thermoassociative polymers in subterranean treatment fluids

High temperature treatment fluids with nano-crosslinkers

Treatment methods using aqueous fluids containing oil-soluble treat...

Compositions and methods for cross-linking hydratable polymers usin...

Multifunctional friction reducers

Siloxane surfactant additives for oil and gas applications

Polyvinyl alcohol based diverting agents

Method for reducing the permeability of a subterranean formation to...

Emulsions, treatment fluids and methods for treating subterranean f...

Subterranean stimulation operations utilizing degradable pre-coated...

Compositions and methods for cross-linking hydratable polymers usin...

Method for a fracturing fluid system at high temperatures

Methods for controlling conductive aggregates

Fractures treatment

Patents Applicationslast 30 patents

PARTICLES FOR CARRIERS AND TRACERS

WATER-BASED FRICTION-REDUCING SLURRY COMPOSITIONS, FORMATION TREATI...

POLYESTER DIVERTING AGENTS FOR LOW-TEMPERATURE OIL WELLS

FLOWBACK AID FOR FRACTURING FLUIDS

DIVERTING MATERIALS FOR WELL STIMULATION

SUPERHEATED PHASE CHANGING NANODROPLETS FOR HYDROCARBON RESERVOIR A...

SUPRAMOLECULAR STAR-SHAPED POLYMER WITH BETA-CD AS CORE AND PREPARA...

PARTICLES FOR CARRIERS AND TRACERS

METHODS AND COMPOSITIONS OF DISPERSIBLE FERROELECTRIC NANOPARTICLES...

Coated Proppants

POLYESTER DIVERTING AGENTS FOR LOW-TEMPERATURE OIL WELLS

Silane-Functionalized Polyalkyleneimine Clay Stabilizer for Treatme...

POLYMER DISPERSIONS FOR WAX INHIBITION DURING STIMULATION TREATMENT

CONTROLLING THE FORMATION OF POLYMER-METAL COMPLEXES IN WELLBORE OP...

Composition and Method for Breaking Friction Reducing Polymer for W...

THERMOASSOCIATIVE POLYMERS IN SUBTERRANEAN TREATMENT FLUIDS

FRACTURING FLUID COMPOSITIONS AND METHODS FOR MAKING AND USING SAME

COMPOSITIONS AND METHODS FOR CROSS-LINKING HYDRATABLE POLYMERS USIN...

PICKERING EMULSIONS USED IN WELLBORE SERVICING FLUIDS AND METHODS

CAVITATION OF POLYMER-CONTAINING FLUIDS FOR USE IN SUBTERRANEAN FOR...

CONVERTING INVERT EMULSIONS TO EMULSIONS USING POLYVALENT SALTS OF...

MULTIFUNCTIONAL FRICTION REDUCERS

Emulsions, Treatment Fluids and Methods for Treating Subterranean F...

HIGH TEMPERATURE TREATMENT FLUIDS WITH NANO-CROSSLINKERS

Aqueous Delayed Acid System for Well Stimulation

PROCESS FOR PRODUCING HYDROPHOBICALLY ASSOCIATING POLYACRYLAMIDES

HIGH TEMPERATURE FRACTURING FLUIDS WITH NANO-CROSSLINKERS

Treatment Methods Using Aqueous Fluids Containing Oil-Soluble Treat...

SILOXANE SURFACTANT ADDITIVES FOR OIL AND GAS APPLICATIONS

POLYVINYL ALCOHOL BASED DIVERTING AGENTS