Specific additives for general use in well-drilling compositions

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C09K8/03

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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

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C09K8/03Specific additives for general use in well-drilling compositions

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Self-degrading organogels
- Patent number 12,203,029
- Issue date Jan 21, 2025
- University of Maryland, College Park
- Faraz A. Burni
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for removing hydrogen sulfide from subterranean geological...
- Patent number 12,195,669
- Issue date Jan 14, 2025
- King Fahd University of Petroleum & Minerals
- Sagheer A. Onaizi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Nanoparticle wedge effect to induce water wettability
- Patent number 12,187,955
- Issue date Jan 7, 2025
- Halliburton Energy Services, Inc.
- Antonio Recio
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Low glass transition temperature polymer latex drag reducing agent
- Patent number 12,187,956
- Issue date Jan 7, 2025
- LiquidPower Specialty Products Inc.
- Stuart N. Milligan
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Fluorescent dye oil tracer compositions
- Patent number 12,188,350
- Issue date Jan 7, 2025
- Saudi Arabian Oil Company
- Wei Wang
- E21 - EARTH DRILLING MINING
Information Patent Grant
Composition that can be used to delay the formation of gas hydrates
- Patent number 12,180,417
- Issue date Dec 31, 2024
- Arkema France
- Gilles Barreto
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Methods for stimulating hydrocarbon-bearing formations
- Patent number 12,180,423
- Issue date Dec 31, 2024
- Dorf Ketal Chemicals FZE
- Clay Purdy
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Process for removing hydrogen sulfide from a gas composition
- Patent number 12,173,223
- Issue date Dec 24, 2024
- King Fahd University of Petroleum & Minerals
- Ashraf Ahmed
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Propoxylates for foam enhancement
- Patent number 12,173,235
- Issue date Dec 24, 2024
- Halliburton Energy Services, Inc.
- Chunli Li
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Sodium alkyl PG-dimonium chloride phosphates as lubricating agents...
- Patent number 12,173,224
- Issue date Dec 24, 2024
- Colonial Chemical, Inc.
- Xiangdong Sun
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Method and composition for subsurface well intervention to reduce w...
- Patent number 12,168,750
- Issue date Dec 17, 2024
- RHEOVEST, LLC
- Nathan R. Hutchings
- E21 - EARTH DRILLING MINING
Information Patent Grant
Weighted drilling fluid composition
- Patent number 12,152,190
- Issue date Nov 26, 2024
- King Fahd University of Petroleum & Minerals
- Ashraf Ahmed
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Methods for spotting acid in a wellbore
- Patent number 12,152,195
- Issue date Nov 26, 2024
- Dorf Ketal Chemicals FZE
- Clay Purdy
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
pH-responsive nano-gel plugging material, and preparation method th...
- Patent number 12,146,095
- Issue date Nov 19, 2024
- China National Petroleum Corporation
- Jie Zhang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for filtering 2-acrylamido-2-methylpropane sulfonic acid
- Patent number 12,145,900
- Issue date Nov 19, 2024
- SNF Group
- Cédrick Favero
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Compositions and methods for inhibiting clay swelling in hydrocarbo...
- Patent number 12,140,007
- Issue date Nov 12, 2024
- TRUOX, INC.
- Roy W. Martin
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Liquid suspension composition for wellbore operations, and methods...
- Patent number 12,139,668
- Issue date Nov 12, 2024
- Halliburton Energy Services, Inc.
- Rahul Jadhav
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Drilling fluid additives and fracturing fluid additives containing...
- Patent number 12,134,729
- Issue date Nov 5, 2024
- GranBio Intellectual Property Holdings, LLC
- Jean-Pierre Monclin
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ethylene amine hydrochloride based shale inhibitor for aqueous dril...
- Patent number 12,134,728
- Issue date Nov 5, 2024
- Saudi Arabian Oil Company
- Vikrant Wagle
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Methods and compositions for carbon dioxide-foamed lost circulation...
- Patent number 12,116,526
- Issue date Oct 15, 2024
- Saudi Arabian Oil Company
- Vikrant Wagle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling fluid composition and method for removing hydrogen sulfide...
- Patent number 12,110,447
- Issue date Oct 8, 2024
- King Fahd University of Petroleum & Minerals
- Ashraf Ahmed
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and system for managing carbon containing gases
- Patent number 12,098,603
- Issue date Sep 24, 2024
- Baker Hughes Oilfield Operations LLC
- Reza Ettehadi Osgouei
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Chemical compositions and in-situ methods of using same for remedia...
- Patent number 12,084,615
- Issue date Sep 10, 2024
- GAPS Technology, LLC.
- Cliffton Lee Roe
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Tracers for petroleum reservoirs
- Patent number 12,077,504
- Issue date Sep 3, 2024
- Saudi Arabian Oil Company
- Hooisweng Ow
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bistable system for the controlled release of corrosion inhibitors
- Patent number 12,065,612
- Issue date Aug 20, 2024
- Saudi Arabian Oil Company
- Layan Alaeddin AlSharif
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Drilling fluids and uses thereof
- Patent number 12,054,664
- Issue date Aug 6, 2024
- MINEX CRC LTD
- Masood Mostofi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ultra-high molecular weight (UHMW) branched block copolymer viscosi...
- Patent number 12,043,787
- Issue date Jul 23, 2024
- Saudi Arabian Oil Company
- Sivaprakash Shanmugam
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
C-36 dimer diamine hydrochloride salt as primary viscosifier for in...
- Patent number 12,024,669
- Issue date Jul 2, 2024
- Saudi Arabian Oil Company
- Vikrant Wagle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Viscoelastic surfactant fluid composition, and method of using the...
- Patent number 12,018,209
- Issue date Jun 25, 2024
- Mitsubishi Gas Chemical Company, Inc.
- Kunitoshi Mimura
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Methods for stimulating a hydrocarbon-bearing formation by perforat...
- Patent number 12,018,210
- Issue date Jun 25, 2024
- Dorf Ketal Chemicals FZE
- Clay Purdy
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
BRINE-TOLERANT LUBRICANTS AND METHODS FOR USING THE SAME
- Publication number 20250019610
- Publication date Jan 16, 2025
- METSS Corporation
- Adriane Lewis
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH
- Publication number 20250011643
- Publication date Jan 9, 2025
- Dorf Ketal Chemicals FZE
- Tom McLoughlin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH
- Publication number 20250011644
- Publication date Jan 9, 2025
- Dorf Ketal Chemicals FZE
- Tom McLoughlin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
WEIGHTED DRILLING FLUID COMPOSITION
- Publication number 20240400881
- Publication date Dec 5, 2024
- KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- Ashraf AHMED
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PROCESS FOR REMOVING HYDROGEN SULFIDE FROM A GAS COMPOSITION
- Publication number 20240400882
- Publication date Dec 5, 2024
- KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- Ashraf AHMED
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
METHOD FOR REDUCING HYDROGEN SULFIDE IN A SUBTERRANEAN FORMATION
- Publication number 20240400883
- Publication date Dec 5, 2024
- KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- Ashraf AHMED
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
PROPOXYLATES FOR FOAM ENHANCEMENT
- Publication number 20240336832
- Publication date Oct 10, 2024
- Halliburton Energy Services, Inc.
- Chunli LI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DRILLING FLUID COMPOSITION AND METHOD FOR REMOVING HYDROGEN SULFIDE...
- Publication number 20240336827
- Publication date Oct 10, 2024
- KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
- Ashraf AHMED
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Liquid Suspension Composition for Wellbore Operations, and Methods...
- Publication number 20240336831
- Publication date Oct 10, 2024
- Halliburton Energy Services, Inc.
- Rahul JADHAV
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
METHODS AND COMPOSITIONS FOR NITROGEN-FOAMED LOST CIRCULATION MATER...
- Publication number 20240318062
- Publication date Sep 26, 2024
- Saudi Arabian Oil Company
- Vikrant WAGLE
- E21 - EARTH DRILLING MINING
Information Patent Application
METHODS AND COMPOSITIONS FOR CARBON DIOXIDE-FOAMED LOST CIRCULATION...
- Publication number 20240318063
- Publication date Sep 26, 2024
- Saudi Arabian Oil Company
- Vikrant WAGLE
- E21 - EARTH DRILLING MINING
Information Patent Application
TRACERS FOR PETROLEUM RESERVOIRS
- Publication number 20240308962
- Publication date Sep 19, 2024
- Saudi Arabian Oil Company
- Hooisweng Ow
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
ULTRA-HIGH MOLECULAR WEIGHT (UHMW) BRANCHED BLOCK COPOLYMER VISCOSI...
- Publication number 20240309260
- Publication date Sep 19, 2024
- ARAMCO SERVICES COMPANY
- Sivaprakash Shanmugam
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Methods for Stimulating a Hydrocarbon-bearing Formation by Perforat...
- Publication number 20240301277
- Publication date Sep 12, 2024
- Dorf Ketal Chemicals FZE
- Clay Purdy
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DR...
- Publication number 20240279527
- Publication date Aug 22, 2024
- Saudi Arabian Oil Company
- Ayman R. Al-Nakhli
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH
- Publication number 20240279533
- Publication date Aug 22, 2024
- Dorf Ketal Chemicals FZE
- Tom McLoughlin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
C-36 DIMER DIAMINE HYDROCHLORIDE SALT AS PRIMARY VISCOSIFIER FOR IN...
- Publication number 20240279528
- Publication date Aug 22, 2024
- Saudi Arabian Oil Company
- Vikrant Wagle
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DRILLING FLUIDS AND METHODS RELATED THERETO
- Publication number 20240263531
- Publication date Aug 8, 2024
- ExxonMobil Technology and Engineering Company
- Robert M. SHIRLEY
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
BIOLOGICAL METHOD FOR OBTAINING MONOMERS COMPRISING AN ETHYLENIC UN...
- Publication number 20240263201
- Publication date Aug 8, 2024
- Cédrick FAVERO
- C07 - ORGANIC CHEMISTRY
Information Patent Application
NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH
- Publication number 20240254383
- Publication date Aug 1, 2024
- Dorf Ketal Chemicals FZE
- Tom McLoughlin
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
METABOLIC INHIBITORS FOR CONTROLLING BIOFILM
- Publication number 20240224999
- Publication date Jul 11, 2024
- Olivia Stenzel
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Ionic Liquid Chain Transfer Agent
- Publication number 20240228856
- Publication date Jul 11, 2024
- Halliburton Energy Services, Inc.
- Evan Samples
- C07 - ORGANIC CHEMISTRY
Information Patent Application
LOW-DENSITY HOLLOW GLASS BEAD (HGB) FLUIDS FOR WELLBORE DRILLING, C...
- Publication number 20240228857
- Publication date Jul 11, 2024
- ExxonMobil Technology and Engineering Company
- Glenn PENNY
- E21 - EARTH DRILLING MINING
Information Patent Application
Methods for Stimulating a Hydrocarbon-bearing Formation by Perforat...
- Publication number 20240191128
- Publication date Jun 13, 2024
- Dorf Ketal Chemicals FZE
- Clay Purdy
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
ENVIRONMENTALLY FRIENDLY NANOSHALE INHIBITOR IN AQUEOUS-BASED WELLB...
- Publication number 20240141223
- Publication date May 2, 2024
- Saudi Arabian Oil Company
- Hassan Sakar Alqahtani
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
COMPOSITION FOR MAKING A DRILLING FLUID A NON-INVASIVE DRILLING FLUID
- Publication number 20240141224
- Publication date May 2, 2024
- European Mud Company AS
- Jan Kristian Vasshus
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
ADDITIVES TO TEMPORARILY REDUCE VISCOSITIES IN OIL-BASED FLUIDS
- Publication number 20240132768
- Publication date Apr 25, 2024
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Dimitri Khramov
- E21 - EARTH DRILLING MINING
Information Patent Application
LOW-DENSITY HOLLOW GLASS BEAD (HGB) FLUIDS FOR WELLBORE DRILLING, C...
- Publication number 20240132769
- Publication date Apr 25, 2024
- ExxonMobil Technology and Engineering Company
- Glenn PENNY
- E21 - EARTH DRILLING MINING
Information Patent Application
CHEMICAL FLUID CONTAINING AN ANTIOXIDANT FOR UNDERGROUND TREATMENT...
- Publication number 20240093084
- Publication date Mar 21, 2024
- NISSAN CHEMICAL CORPORATION
- Takahiro OHORI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
TRACERS FOR PETROLEUM RESERVOIRS
- Publication number 20240067606
- Publication date Feb 29, 2024
- Saudi Arabian Oil Company
- Hooisweng Ow
- E21 - EARTH DRILLING MINING

Specific additives for general use in well-drilling compositions

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Self-degrading organogels

Process for removing hydrogen sulfide from subterranean geological...

Nanoparticle wedge effect to induce water wettability

Low glass transition temperature polymer latex drag reducing agent

Fluorescent dye oil tracer compositions

Composition that can be used to delay the formation of gas hydrates

Methods for stimulating hydrocarbon-bearing formations

Process for removing hydrogen sulfide from a gas composition

Propoxylates for foam enhancement

Sodium alkyl PG-dimonium chloride phosphates as lubricating agents...

Method and composition for subsurface well intervention to reduce w...

Weighted drilling fluid composition

Methods for spotting acid in a wellbore

pH-responsive nano-gel plugging material, and preparation method th...

Process for filtering 2-acrylamido-2-methylpropane sulfonic acid

Compositions and methods for inhibiting clay swelling in hydrocarbo...

Liquid suspension composition for wellbore operations, and methods...

Drilling fluid additives and fracturing fluid additives containing...

Ethylene amine hydrochloride based shale inhibitor for aqueous dril...

Methods and compositions for carbon dioxide-foamed lost circulation...

Drilling fluid composition and method for removing hydrogen sulfide...

Method and system for managing carbon containing gases

Chemical compositions and in-situ methods of using same for remedia...

Tracers for petroleum reservoirs

Bistable system for the controlled release of corrosion inhibitors

Drilling fluids and uses thereof

Ultra-high molecular weight (UHMW) branched block copolymer viscosi...

C-36 dimer diamine hydrochloride salt as primary viscosifier for in...

Viscoelastic surfactant fluid composition, and method of using the...

Methods for stimulating a hydrocarbon-bearing formation by perforat...

Patents Applicationslast 30 patents

BRINE-TOLERANT LUBRICANTS AND METHODS FOR USING THE SAME

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

WEIGHTED DRILLING FLUID COMPOSITION

PROCESS FOR REMOVING HYDROGEN SULFIDE FROM A GAS COMPOSITION

METHOD FOR REDUCING HYDROGEN SULFIDE IN A SUBTERRANEAN FORMATION

PROPOXYLATES FOR FOAM ENHANCEMENT

DRILLING FLUID COMPOSITION AND METHOD FOR REMOVING HYDROGEN SULFIDE...

Liquid Suspension Composition for Wellbore Operations, and Methods...

METHODS AND COMPOSITIONS FOR NITROGEN-FOAMED LOST CIRCULATION MATER...

METHODS AND COMPOSITIONS FOR CARBON DIOXIDE-FOAMED LOST CIRCULATION...

TRACERS FOR PETROLEUM RESERVOIRS

ULTRA-HIGH MOLECULAR WEIGHT (UHMW) BRANCHED BLOCK COPOLYMER VISCOSI...

Methods for Stimulating a Hydrocarbon-bearing Formation by Perforat...

SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DR...

DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

C-36 DIMER DIAMINE HYDROCHLORIDE SALT AS PRIMARY VISCOSIFIER FOR IN...

DRILLING FLUIDS AND METHODS RELATED THERETO

BIOLOGICAL METHOD FOR OBTAINING MONOMERS COMPRISING AN ETHYLENIC UN...

NOVEL DOWNHOLE METHODS AND COMPOSITIONS USED IN SUCH

METABOLIC INHIBITORS FOR CONTROLLING BIOFILM

Ionic Liquid Chain Transfer Agent

LOW-DENSITY HOLLOW GLASS BEAD (HGB) FLUIDS FOR WELLBORE DRILLING, C...

Methods for Stimulating a Hydrocarbon-bearing Formation by Perforat...

ENVIRONMENTALLY FRIENDLY NANOSHALE INHIBITOR IN AQUEOUS-BASED WELLB...

COMPOSITION FOR MAKING A DRILLING FLUID A NON-INVASIVE DRILLING FLUID

ADDITIVES TO TEMPORARILY REDUCE VISCOSITIES IN OIL-BASED FLUIDS

LOW-DENSITY HOLLOW GLASS BEAD (HGB) FLUIDS FOR WELLBORE DRILLING, C...

CHEMICAL FLUID CONTAINING AN ANTIOXIDANT FOR UNDERGROUND TREATMENT...

TRACERS FOR PETROLEUM RESERVOIRS