AU639219C - Use of selected ester oils in bore-flushing fluids, particularly for the development of offshore oil and gas fields (I) - Google Patents

Use of selected ester oils in bore-flushing fluids, particularly for the development of offshore oil and gas fields (I)

Info

Publication number
AU639219C
AU639219C AU46551/89A AU4655189A AU639219C AU 639219 C AU639219 C AU 639219C AU 46551/89 A AU46551/89 A AU 46551/89A AU 4655189 A AU4655189 A AU 4655189A AU 639219 C AU639219 C AU 639219C
Authority
AU
Australia
Prior art keywords
bore
development
ester oils
offshore oil
gas fields
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU46551/89A
Other versions
AU4655189A (en
AU639219B2 (en
Inventor
Jean-Marc Braun
John Douglas Grimes
Claus-Peter Herold
Heinz Muller
Stuart P.T. Smith
Stephan Von Tapavicza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Personal Care and Nutrition GmbH
Halliburton Energy Services Inc
Original Assignee
Cognis Deutschland GmbH and Co KG
Halliburton Energy Services Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6369495&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AU639219(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cognis Deutschland GmbH and Co KG, Halliburton Energy Services Inc filed Critical Cognis Deutschland GmbH and Co KG
Publication of AU4655189A publication Critical patent/AU4655189A/en
Assigned to BAROID DRILLING FLUIDS INC. reassignment BAROID DRILLING FLUIDS INC. Alteration of Name(s) of Applicant(s) under S113 Assignors: BAROID LIMITED, HENKEL KOMANDITGESELLSCHAFT AUF AKTIEN
Assigned to BAROID DRILLING FLUIDS INC., HENKEL KOMANDITGESELLSCHAFT AUF AKTIEN reassignment BAROID DRILLING FLUIDS INC. Alteration of Name(s) of Applicant(s) under S113 Assignors: BAROID DRILLING FLUIDS INC.
Application granted granted Critical
Publication of AU639219B2 publication Critical patent/AU639219B2/en
Assigned to COGNIS DEUTSCHLAND GMBH, HALLIBURTON ENERGY SERVICES, INC. reassignment COGNIS DEUTSCHLAND GMBH Alteration of Name(s) of Applicant(s) under S113 Assignors: BAROID DRILLING FLUIDS INC., HENKEL KOMANDITGESELLSCHAFT AUF AKTIEN
Assigned to HALLIBURTON ENERGY SERVICES, INC., COGNIS DEUTSCHLAND GMBH & CO. KG reassignment HALLIBURTON ENERGY SERVICES, INC. Alteration of Name(s) of Applicant(s) under S113 Assignors: COGNIS DEUTSCHLAND GMBH, HALLIBURTON ENERGY SERVICES, INC.
Publication of AU639219C publication Critical patent/AU639219C/en
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • C09K8/34—Organic liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Lubricants (AREA)
  • Earth Drilling (AREA)
  • Treatment Of Sludge (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
AU46551/89A 1988-12-19 1989-12-11 Use of selected ester oils in bore-flushing fluids, particularly for the development of offshore oil and gas fields (I) Expired AU639219C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3842659A DE3842659A1 (en) 1988-12-19 1988-12-19 USE OF SELECTED ESTEROILS IN DRILLING RINSING, IN PARTICULAR FOR THE OFF-SHORE DEVELOPMENT OF PETROLEUM OR. NATURAL GAS DEPOSIT (I)
DE3842659 1988-12-19
PCT/EP1989/001512 WO1990006980A1 (en) 1988-12-19 1989-12-11 Use of selected ester oils in bore-flushing fluids, particularly for the development of offshore oil and gas fields (i)

Publications (3)

Publication Number Publication Date
AU4655189A AU4655189A (en) 1990-07-10
AU639219B2 AU639219B2 (en) 1993-07-22
AU639219C true AU639219C (en) 2003-11-13

Family

ID=6369495

Family Applications (1)

Application Number Title Priority Date Filing Date
AU46551/89A Expired AU639219C (en) 1988-12-19 1989-12-11 Use of selected ester oils in bore-flushing fluids, particularly for the development of offshore oil and gas fields (I)

Country Status (22)

Country Link
EP (2) EP0448579A1 (en)
AR (1) AR247911A1 (en)
AT (1) ATE103627T1 (en)
AU (1) AU639219C (en)
BR (1) BR8907835A (en)
CA (1) CA2006010C (en)
DE (2) DE3842659A1 (en)
DK (1) DK170786B1 (en)
ES (1) ES2061909T3 (en)
GE (1) GEP20001918B (en)
IE (1) IE65152B1 (en)
MX (1) MX174181B (en)
MY (1) MY108504A (en)
NO (1) NO171562B (en)
NZ (1) NZ231827A (en)
PT (1) PT92597B (en)
RO (1) RO111579B1 (en)
RU (1) RU2044025C1 (en)
TJ (1) TJ195R3 (en)
TR (1) TR24786A (en)
WO (1) WO1990006980A1 (en)
ZA (1) ZA899693B (en)

Families Citing this family (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5083622A (en) * 1988-03-14 1992-01-28 Shell Oil Company Method for drilling wells
US5085282A (en) * 1988-03-14 1992-02-04 Shell Oil Company Method for drilling a well with emulsion drilling fluids
US5072794A (en) * 1988-09-30 1991-12-17 Shell Oil Company Alcohol-in-oil drilling fluid system
US5260269A (en) * 1989-10-12 1993-11-09 Shell Oil Company Method of drilling with shale stabilizing mud system comprising polycyclicpolyetherpolyol
US5423379A (en) * 1989-12-27 1995-06-13 Shell Oil Company Solidification of water based muds
US5058679A (en) * 1991-01-16 1991-10-22 Shell Oil Company Solidification of water based muds
US5076364A (en) * 1990-03-30 1991-12-31 Shell Oil Company Gas hydrate inhibition
US5076373A (en) * 1990-03-30 1991-12-31 Shell Oil Company Drilling fluids
DE4012105A1 (en) * 1990-04-14 1991-10-17 Henkel Kgaa USE OF HYDRATED RICINO OIL AS A VISCOSITY IMAGER IN OIL-BASED DRILL RINSING SYSTEM
DE4018228A1 (en) * 1990-06-07 1991-12-12 Henkel Kgaa FLOWABLE DRILL TREATMENT AGENTS BASED ON CARBONIC DIESTERS
DE4019266A1 (en) * 1990-06-16 1992-01-23 Henkel Kgaa FLOW -ABLE BOHRLOCHANGE AGENTS BASED ON POLYCARBONIC ACID ESTERS
DE4024658A1 (en) * 1990-08-03 1992-04-16 Henkel Kgaa USE OF SURFACE-ACTIVE ALKYL GLYCOSIDE COMPOUNDS IN WATER- AND OIL-BASED DRILLING AND OTHER DRILLING TREATMENT AGENTS
US5508258A (en) * 1990-08-03 1996-04-16 Henkel Kommanditgesellschaft Auf Aktien Use of surface-active alpha-sulfo-fatty acid di-salts in water and oil based drilling fluids and other drill-hole treatment agents
GB2251447A (en) * 1991-01-04 1992-07-08 Exxon Production Research Co Invert emulsion for use in a drilling fluid
US5302728A (en) * 1991-03-19 1994-04-12 Shell Oil Company Polycondensation of phenolic hydroxyl-containing compounds and polyhydric alcohols and thermal condensation to form polyethercyclipolyols
US5233055A (en) * 1991-03-19 1993-08-03 Shell Oil Company Copolymerization of polyethercyclicpolyols with epoxy resins
US5371244A (en) * 1991-03-19 1994-12-06 Shell Oil Company Polycondensation of dihydric alcohols and polyhydric alcohols and thermal condensation to form polyethercyclicpolyols
US5338870A (en) * 1991-03-19 1994-08-16 Shell Oil Company Thermal condensation of polyhydric alcohols to form polyethercyclicpolyols
DE4200502A1 (en) * 1992-01-13 1993-07-15 Henkel Kgaa IMPROVED DISPOSAL OF CONTAMINATED DRILL SMALL FROM GEOLOGICAL HOLES WITH MINERAL OIL CONTAINING DRILL RINSING SYSTEMS
DE4218243C2 (en) * 1992-06-03 1994-04-28 Cognis Bio Umwelt Improved nutrient mixtures for the bioremediation of polluted soils and waters
US5428178A (en) * 1992-10-13 1995-06-27 Shell Oil Company Polyethercyclipolyols from epihalohydrins, polyhydric alcohols, and metal hydroxides or epoxy alcohols and optionally polyhydric alcohols with thermal condensation
US5371243A (en) * 1992-10-13 1994-12-06 Shell Oil Company Polyethercyclicpolyols from epihalohydrins, polyhydric alcohols, and metal hydroxides
US5286882A (en) * 1992-10-13 1994-02-15 Shell Oil Company Polyethercyclicpolyols from epihalohydrins, polyhydric alcohols and metal hydroxides or epoxy alcohol and optionally polyhydric alcohols with addition of epoxy resins
USH1611H (en) * 1993-11-04 1996-11-05 M-I Drilling Fluids Company Glycols as internal phase in oil well drilling fluids
GB9324834D0 (en) * 1993-12-03 1994-01-19 Exxon Chemical Patents Inc Drilling fluid
GB9406057D0 (en) * 1994-03-26 1994-05-18 Univ Heriot Watt Drilling mud
US5776865A (en) * 1994-05-25 1998-07-07 Shell Oil Company Emulsifiable oil
DE4420455A1 (en) * 1994-06-13 1995-12-14 Henkel Kgaa Flowable borehole treatment compositions containing linear alpha-olefins, in particular corresponding drilling fluids
DE4432841A1 (en) 1994-09-15 1996-03-21 Hoechst Ag Use of mixtures containing acetal
DE69614555T2 (en) 1995-09-11 2002-04-11 M-I L.L.C., Houston DRILLING LIQUID BASED ON GLYCOL
DE19546911A1 (en) 1995-12-15 1997-06-19 Henkel Kgaa New aqueous-swellable preparations of guar and guar derivatives in oleophilic liquids and their use
US6589917B2 (en) 1996-08-02 2003-07-08 M-I Llc Invert emulsion drilling fluids and muds having negative alkalinity and elastomer compatibility
US5905061A (en) * 1996-08-02 1999-05-18 Patel; Avind D. Invert emulsion fluids suitable for drilling
TW354352B (en) * 1996-10-30 1999-03-11 Henkel Kgaa A process for easier cleaning on the basis of water/oil inversion emulifier
US6022833A (en) * 1996-10-30 2000-02-08 Henkel Kommanditgesellschaft Auf Aktien Multicomponent mixtures for use in geological exploration
DE19643857A1 (en) 1996-10-30 1998-05-07 Henkel Kgaa Use of biodegradable alkoxylation products to clean boreholes, drilling equipment or cuttings
DE19647565A1 (en) 1996-11-18 1998-05-20 Henkel Kgaa Multi-phase lubricant concentrates for use in water-based systems in the field of earth drilling
DE19649285A1 (en) 1996-11-28 1998-06-04 Henkel Kgaa Method of protecting metal surfaces against corrosion in liquid or gaseous media
US6029755A (en) * 1998-01-08 2000-02-29 M-I L.L.C. Conductive medium for openhole logging and logging while drilling
US6308788B1 (en) 1998-01-08 2001-10-30 M-I Llc Conductive medium for openhole logging and logging while drilling
US6793025B2 (en) 1998-01-08 2004-09-21 M-I L. L. C. Double emulsion based drilling fluids
US5990050A (en) * 1998-01-08 1999-11-23 M-I L.L.C. Water soluble invert emulsions
US6405809B2 (en) 1998-01-08 2002-06-18 M-I Llc Conductive medium for openhold logging and logging while drilling
FR2781498B1 (en) * 1998-07-21 2002-06-28 Elf Exploration Prod METHOD OF USING BIODEGRADABLE DRILLING SLUDGE
DE19852971A1 (en) 1998-11-17 2000-05-18 Cognis Deutschland Gmbh Lubricants for drilling fluids
US6828279B2 (en) 2001-08-10 2004-12-07 M-I Llc Biodegradable surfactant for invert emulsion drilling fluid
DE10243312A1 (en) 2002-09-18 2004-04-01 Cognis Deutschland Gmbh & Co. Kg Well treatment agent with low-toxic oil phase
DE10334441A1 (en) 2003-07-29 2005-02-17 Cognis Deutschland Gmbh & Co. Kg Borehole treatment agents containing ether carboxylic acids
DE102004034141A1 (en) 2004-07-15 2006-02-09 Cognis Ip Management Gmbh Use of lithium salts of fatty alcohol sulfates for cleaning wells, drills or cuttings
EP2041236A1 (en) 2006-06-26 2009-04-01 Bp Exploration Operating Company Limited Wellbore fluid
EP2036963A1 (en) 2007-09-14 2009-03-18 Cognis Oleochemicals GmbH Lubricants for drilling fluids
EP2036962A1 (en) 2007-09-14 2009-03-18 Cognis Oleochemicals GmbH Additives for water-based drilling fluids
EP2036964A1 (en) 2007-09-14 2009-03-18 Cognis Oleochemicals GmbH Thickener for oil-based drilling fluids
EP2053111B1 (en) 2007-10-24 2016-12-07 Emery Oleochemicals GmbH Drilling composition, process for its preparation and applications thereof
DE102008009368A1 (en) 2008-02-14 2009-08-20 Cognis Oleochemicals Gmbh Producing organic composition, useful e.g. as additive in drilling fluid, comprises mixing n-nonyl ether obtained by reacting n-nonyl alcohol-component with e.g. polyether alcohol, functional component e.g. enzyme and further additive
DE102008009369A1 (en) 2008-02-14 2009-08-20 Cognis Oleochemicals Gmbh Production of compositions of functional components such as thermoplastics, enzymes, oils or hair- or skin-care substances, involves using a n-nonyl ester as additive, e.g. as release agent or foam suppressant
DE102008008250A1 (en) 2008-02-08 2009-08-20 Cognis Oleochemicals Gmbh Boron-based cleaning agents based on organic amine sulphate
DE102008008251A1 (en) 2008-02-08 2009-08-20 Cognis Oleochemicals Gmbh Crosslinked glycerol or oligoglycerol esters and their use as an additive in drilling fluids
EP2154224A1 (en) 2008-07-25 2010-02-17 Bp Exploration Operating Company Limited Method of carrying out a wellbore operation
DE102009014119A1 (en) 2009-03-24 2010-09-30 Emery Oleochemicals Gmbh Emulsion-based cleaning composition for oil field applications
CN102459502B (en) 2009-06-02 2014-04-02 切弗朗菲利浦化学公司 Wellbore fluid additives and methods of producing the same
FR2953853B1 (en) 2009-12-15 2013-02-08 Total Raffinage Marketing BIODEGRADABLE LUBRICATING COMPOSITION AND ITS USE IN A DRILLING FLUID, IN PARTICULAR FOR VERY BURIED TANKS
DE102009060865A1 (en) 2009-12-30 2011-07-07 Emery Oleochemicals GmbH, 40589 Esters of solid polyols and unsaturated carboxylic acids
US8563482B2 (en) 2010-09-22 2013-10-22 Saudi Arabian Oil Company Environment friendly base fluid to replace the toxic mineral oil-based base fluids
EA201300614A1 (en) 2010-11-25 2013-12-30 Бп Эксплорейшн Оперейтинг Компани Лимитед SEAL
EP2707451B1 (en) 2011-05-12 2015-03-25 BP Exploration Operating Company Limited Method of carrying out a wellbore operation
US9115326B2 (en) 2012-11-20 2015-08-25 Chevron U.S.A. Inc. Monoester-based lubricants and methods of making same
US9115556B2 (en) 2012-11-20 2015-08-25 Chevron U.S.A. Inc. Method of using biologically-derived monoesters as drilling fluids
US9238783B2 (en) 2012-11-20 2016-01-19 Chevron U.S.A. Inc. Monoester-based lubricants and methods of making same
US9115303B2 (en) 2012-11-20 2015-08-25 Chevron U.S.A. Inc. Biologically-derived monoesters as drilling fluids
WO2015027035A1 (en) * 2013-08-22 2015-02-26 Chevron U.S.A. Inc. Method of using biologically-derived monoesters as drilling fluids
CA2918633A1 (en) * 2013-08-22 2015-02-26 Stephen Joseph Miller Biologically-derived monoesters as drilling fluids
EP2848720B1 (en) 2013-09-12 2016-03-02 3M Innovative Properties Company Use of a lubricant in a mounting mat and method for making such a mat
US9834718B2 (en) 2014-05-06 2017-12-05 Saudi Arabian Oil Company Ecofriendly lubricating additives for water-based wellbore drilling fluids
BR102015015617B1 (en) 2015-06-26 2022-10-11 Oxiteno S.A. Indústria E Comércio COMPOSITION FOR DRILLING FLUIDS WITH OIL PHASE BASED ON DIESTERS
WO2019147515A1 (en) 2018-01-29 2019-08-01 Exxonmobil Chemical Patents Inc. Anaerobically biodegradable fluids for drilling applications
EP3763922A1 (en) 2019-07-09 2021-01-13 3M Innovative Properties Company Mounting mat for use in pollution control devices
US11352545B2 (en) 2020-08-12 2022-06-07 Saudi Arabian Oil Company Lost circulation material for reservoir section
EP4379197A1 (en) 2022-11-30 2024-06-05 3M Innovative Properties Company Zero binder polycrystalline mounting mat with improved production handing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4957890A (en) * 1989-02-09 1990-09-05 Cognis Deutschland Gmbh & Co. Kg Monocarboxylic methyl esters in invert mineral oil muds
AU5182390A (en) * 1989-03-08 1990-10-09 Cognis Deutschland Gmbh & Co. Kg Use of selected low carboxylic acid ester oils in drilling muds
AU5180290A (en) * 1989-03-08 1990-10-09 Cognis Deutschland Gmbh & Co. Kg Invert drilling muds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2843473A1 (en) * 1978-10-05 1980-04-17 Bayer Ag LACTONE MODIFIED ESTER OILS
US4374737A (en) * 1980-01-14 1983-02-22 Dana E. Larson Nonpolluting drilling fluid composition
US4631136A (en) * 1985-02-15 1986-12-23 Jones Iii Reed W Non-polluting non-toxic drilling fluid compositions and method of preparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4957890A (en) * 1989-02-09 1990-09-05 Cognis Deutschland Gmbh & Co. Kg Monocarboxylic methyl esters in invert mineral oil muds
AU5182390A (en) * 1989-03-08 1990-10-09 Cognis Deutschland Gmbh & Co. Kg Use of selected low carboxylic acid ester oils in drilling muds
AU5180290A (en) * 1989-03-08 1990-10-09 Cognis Deutschland Gmbh & Co. Kg Invert drilling muds

Also Published As

Publication number Publication date
NO912337L (en) 1991-06-17
MY108504A (en) 1996-10-31
DK170786B1 (en) 1996-01-15
AU4655189A (en) 1990-07-10
EP0448579A1 (en) 1991-10-02
MX174181B (en) 1994-04-27
IE894056L (en) 1990-06-19
DK117591A (en) 1991-08-13
NO912337D0 (en) 1991-06-17
AR247911A1 (en) 1995-04-28
NZ231827A (en) 1991-12-23
WO1990006980A1 (en) 1990-06-28
EP0374671B1 (en) 1994-03-30
DE3842659A1 (en) 1990-06-28
TR24786A (en) 1992-05-01
PT92597A (en) 1990-06-29
RU2044025C1 (en) 1995-09-20
EP0374671A1 (en) 1990-06-27
ZA899693B (en) 1990-08-29
TJ195R3 (en) 1998-10-28
ES2061909T3 (en) 1994-12-16
GEP20001918B (en) 2000-01-05
RO111579B1 (en) 1996-11-29
CA2006010A1 (en) 1990-06-19
NO171562B (en) 1992-12-21
DE58907349D1 (en) 1994-05-05
PT92597B (en) 1995-09-12
ATE103627T1 (en) 1994-04-15
DK117591D0 (en) 1991-06-18
IE65152B1 (en) 1995-10-04
BR8907835A (en) 1991-10-22
CA2006010C (en) 2004-06-29
AU639219B2 (en) 1993-07-22

Similar Documents

Publication Publication Date Title
AU639219B2 (en) Use of selected ester oils in bore-flushing fluids, particularly for the development of offshore oil and gas fields (i)
ZA899696B (en) The use of selected ester oils in drilling fluids,particularly for the offshore development of oil and gas sources (ii)
AU3697897A (en) Fluid comprising cellulose nanofibrils and its use for the exploitation of petroleum deposits
AU7463387A (en) Low toxicity oil composition and use thereof in drilling fluids
AU547407B2 (en) Low density proppant for oil and gas wells
AU4503489A (en) Amide containing friction modifier for use in power transmission fluids
AU1289197A (en) Hydrocarbon oil/fluorochemical preparations and method of use
AU3782595A (en) Lubricating composition including an ester - use of the composition and well fluid including the composition
EP0644412A3 (en) Method for the analysis of fluids and suspensions having clinical relevance.
AU6214794A (en) Improvements in or relating to drilling and to the extraction of fluids
AU4739797A (en) A non-flammable refrigerant fluid containing hexafluoropropene and hydrocarbon
AU3549297A (en) Use of oil and gas field chemicals
AU3953589A (en) Well drilling fluid and method
EP0748862A3 (en) Lubricating compositions, functional fluids and greases containing thiophosphorus esters or their salts with an oxyalkylene group, and methods of using the same
AU2470495A (en) Spotting fluid and lubricant
GB2289115B (en) Fluid type pusher with thrust indicator
AU6746196A (en) Shoe for use in the construction of oil and gas wells
AU3262795A (en) Filling and circulating head for use in the construction of oil and gas wells
AU2269888A (en) Base fluid for the preparation of fluids applicable in connection with exploitation of petroleum reservoirs
EP0192037A3 (en) Shut-off device, especially for high-pressure fluids, and use of the device
AU7440694A (en) Methods of using acidizing fluids in wells, and compositions used therein
AU634207C (en) The use of selected ester oils in drilling fluids, particularly for the offshore development of oil and gas sources (II)
AU8821291A (en) Lubricating oil compositions and concentrations and the use thereof
CA2090306A1 (en) Oil and Gas Well Operation Fluid Used for the Solvation of Waxes and Asphaltenes, and Method of Use Thereof
VN95A6 (en) The use of selected ester oils in drilling fluids,particulary for the offshore development of oil and gas sources

Legal Events

Date Code Title Description
ON Decision of a delegate or deputy of the commissioner of patents (result of patent office hearing)

Free format text: OPPOSITION AND REQUEST FOR PRODUCTION OF DOCUMENTS

Opponent name: FINA RESEARCH SA

Effective date: 20000426

ON Decision of a delegate or deputy of the commissioner of patents (result of patent office hearing)

Free format text: OPPOSITION UNDER SECTION 59 AND 104 OF THE PATENTS ACT 1990. ALL THE CLAIMS OF 639219 ARE NOVEL OVER THE PRIOR ART OF THE BARTHEL PATENT AND NONE OF THEM ARE OBVIOUS. ALL THE CLAIMS OF 639219 ARE FAIRLY BASED AND ARE CLEAR

Opponent name: FINA RESEARCH FA

Effective date: 20000505

PC1 Assignment before grant (sect. 113)

Owner name: HALLIBURTON ENERGY SERVICES, INC., COGNIS DEUTSCHL

Free format text: THE FORMER OWNER WAS: BAROID DRILLING FLUIDS INC., HENKEL KOMANDITGESELLSCHAFT AUF AKTIEN

PC1 Assignment before grant (sect. 113)

Owner name: HALLIBURTON ENERGY SERVICES, INC., COGNIS DEUTSCHL

Free format text: THE FORMER OWNER WAS: HALLIBURTON ENERGY SERVICES, INC., COGNIS DEUTSCHLAND GMBH

DA2 Applications for amendment section 104

Free format text: THE NATURE OF THE PROPOSED AMENDMENT IS AS SHOWN IN THE STATEMENT(S) FILED 20030207

FGA Letters patent sealed or granted (standard patent)
DA3 Amendments made section 104

Free format text: THE NATURE OF THE AMENDMENT IS AS WAS NOTIFIED IN THE OFFICIAL JOURNAL DATED 20031023

Free format text: THE NATURE OF THE AMENDMENT IS AS WAS NOTIFIED IN THE OFFICIAL JOURNAL DATED 19980625