[go: up one dir, main page]

EA200200436A1 - Жидкости для обработки скважин, включающие смешанные альдегиды - Google Patents

Жидкости для обработки скважин, включающие смешанные альдегиды

Info

Publication number
EA200200436A1
EA200200436A1 EA200200436A EA200200436A EA200200436A1 EA 200200436 A1 EA200200436 A1 EA 200200436A1 EA 200200436 A EA200200436 A EA 200200436A EA 200200436 A EA200200436 A EA 200200436A EA 200200436 A1 EA200200436 A1 EA 200200436A1
Authority
EA
Eurasian Patent Office
Prior art keywords
carbon atoms
acid
aldehyde
including mixed
liquids including
Prior art date
Application number
EA200200436A
Other languages
English (en)
Other versions
EA004545B1 (ru
Inventor
Вейн В. Френье
Дональд Г. Хилл
Original Assignee
Шлюмбергер Текнолоджи Б.В.
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
Application filed by Шлюмбергер Текнолоджи Б.В. filed Critical Шлюмбергер Текнолоджи Б.В.
Publication of EA200200436A1 publication Critical patent/EA200200436A1/ru
Publication of EA004545B1 publication Critical patent/EA004545B1/ru

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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • 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
    • C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
    • 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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/62—Compositions for forming crevices or fractures
    • C09K8/72—Eroding chemicals, e.g. acids
    • C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/32—Anticorrosion additives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S166/00—Wells
    • Y10S166/902—Wells for inhibiting corrosion or coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00—Earth boring, well treating, and oil field chemistry
    • Y10S507/933—Acidizing or formation destroying
    • Y10S507/934—Acidizing or formation destroying with inhibitor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00—Earth boring, well treating, and oil field chemistry
    • Y10S507/939—Corrosion inhibitor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

Кислотная жидкость, пригодная для использования в операциях по возбуждению и ремонту скважин, и в частности, для кислотных обработок материнских пород формации, которая включает кислоту, такую как хлористо-водородная кислота; воду; алифатический альдегид, содержащий 1-10 атомов углерода; и ароматический альдегид, содержащий 7-20 атомов углерода. Алифатический альдегид предпочтительно содержит 1-6 атомов углерода. Глиоксиловая кислота и глиоксаль являются особенно предпочтительными алифатическими альдегидами. Ароматический альдегид предпочтительно содержит 7-10 атомов углерода. Коричный альдегид является особенно предпочтительным.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200200436A 1999-10-13 2000-09-27 Жидкости для обработки скважин, включающие смешанные альдегиды EA004545B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/417,426 US6068056A (en) 1999-10-13 1999-10-13 Well treatment fluids comprising mixed aldehydes
PCT/US2000/026538 WO2001027440A1 (en) 1999-10-13 2000-09-27 Well treatment fluids comprising mixed aldehydes

Publications (2)

Publication Number Publication Date
EA200200436A1 true EA200200436A1 (ru) 2002-12-26
EA004545B1 EA004545B1 (ru) 2004-06-24

Family

ID=23653995

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200200436A EA004545B1 (ru) 1999-10-13 2000-09-27 Жидкости для обработки скважин, включающие смешанные альдегиды

Country Status (7)

Country Link
US (2) US6068056A (ru)
AU (1) AU7834500A (ru)
CA (1) CA2387416C (ru)
EA (1) EA004545B1 (ru)
GB (1) GB2373010B (ru)
NO (1) NO20021731L (ru)
WO (1) WO2001027440A1 (ru)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8273693B2 (en) 2001-12-12 2012-09-25 Clearwater International Llc Polymeric gel system and methods for making and using same in hydrocarbon recovery
US7205262B2 (en) 2001-12-12 2007-04-17 Weatherford/Lamb, Inc. Friction reducing composition and method
US7405188B2 (en) 2001-12-12 2008-07-29 Wsp Chemicals & Technology, Llc Polymeric gel system and compositions for treating keratin substrates containing same
US7183239B2 (en) * 2001-12-12 2007-02-27 Clearwater International, Llc Gel plugs and pigs for pipeline use
US6887840B2 (en) * 2003-01-21 2005-05-03 Milborn Enterprises Llc Iron sulfide clean-up composition and method
US6826482B2 (en) * 2003-02-07 2004-11-30 Schlumberger Technology Corporation Wellbore treatment fluid selection advisor
JP2009501858A (ja) * 2005-07-16 2009-01-22 ピー．イー．ティー． インターナショナル インコーポレイテッド １つの動力ユニット装置内に組合せられた窒素発生システム及び井戸処理流体システム
US20070071887A1 (en) * 2005-09-26 2007-03-29 Halliburton Energy Services, Inc. Methods of inhibiting corrosion of a metal surface
US20070069182A1 (en) * 2005-09-26 2007-03-29 Halliburton Energy Services, Inc. Corrosion inhibitor compositions and associated methods
EP1929072A1 (en) * 2005-09-26 2008-06-11 Halliburton Energy Services, Inc. Corrosion inhibitor compositions and associated methods
CN101449025A (zh) * 2006-03-20 2009-06-03 Wise井干涉服务公司 井用维修组合单元
US7994101B2 (en) * 2006-12-12 2011-08-09 Halliburton Energy Services, Inc. Corrosion inhibitor intensifier compositions and associated methods
US20080227669A1 (en) * 2007-03-12 2008-09-18 Halliburton Energy Services, Inc. Corrosion-inhibiting additives, treatment fluids, and associated methods
EP2471887A1 (en) 2007-03-12 2012-07-04 Halliburton Energy Services, Inc. Improved corrosion-inhibiting additives, treatment fluids and associated methods
US20080227668A1 (en) * 2007-03-12 2008-09-18 Halliburton Energy Services, Inc. Corrosion-inhibiting additives, treatment fluids, and associated methods
US20080264649A1 (en) * 2007-04-29 2008-10-30 Crawford James D Modular well servicing combination unit
US8065905B2 (en) 2007-06-22 2011-11-29 Clearwater International, Llc Composition and method for pipeline conditioning and freezing point suppression
US8099997B2 (en) 2007-06-22 2012-01-24 Weatherford/Lamb, Inc. Potassium formate gel designed for the prevention of water ingress and dewatering of pipelines or flowlines
US8058211B2 (en) * 2007-12-12 2011-11-15 Halliburton Energy Services, Inc. Corrosion inhibitor intensifier compositions and associated methods
US7994099B2 (en) * 2009-04-14 2011-08-09 Haliburton Energy Services, Inc. Corrosion inhibitor compositions comprising an aldehyde and a thiol and/or an amine functionalized ring structure and associated methods
US8778172B2 (en) * 2009-05-05 2014-07-15 Dorf Ketal Chemicals (I) Private Limited Method of scavenging hydrogen sulfide from hydrocarbon stream
US8247355B2 (en) * 2009-06-25 2012-08-21 Schlumberger Technology Corporation Acidic viscosity enhancer for viscoelastic surfactant fluids
US8933000B2 (en) * 2009-09-11 2015-01-13 Baker Hughes Incorporated Corrosion inhibitor for acid stimulation systems
US8895481B2 (en) * 2009-12-21 2014-11-25 Schlumberger Technology Corporation Viscoelastic surfactant acid treatment
EP2519608A1 (en) * 2009-12-31 2012-11-07 Dorf Ketal Chemicals (India) Private Limited Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate
US10174239B2 (en) 2010-02-09 2019-01-08 Baker Hughes, A Ge Company, Llc Process for preventing or mitigating biofouling
US20110195938A1 (en) * 2010-02-09 2011-08-11 Baker Hughes Incorporated Process for preventing or mitigating biofouling
ES2882131T3 (es) * 2010-11-15 2021-12-01 Dorf Ketal Chemicals India Private Ltd Eliminación del calcio del petróleo crudo que contiene naftenato de calcio
US8357306B2 (en) * 2010-12-20 2013-01-22 Baker Hughes Incorporated Non-nitrogen sulfide sweeteners
US8496061B2 (en) * 2011-01-19 2013-07-30 Saudi Arabian Oil Company VDA/acid system for matrix acid stimulation
WO2013086282A1 (en) * 2011-12-07 2013-06-13 Saudi Arabian Oil Company Two-stage filter cake removal composition for drilling fluids and method of use thereof
US20140116708A1 (en) * 2012-11-01 2014-05-01 Halliburton Energy Services, Inc. Synergistic corrosion inhibitor intensifiers for acidizing emulsions
EP2935770B1 (en) 2012-12-19 2020-04-08 Nalco Company Squeeze treatment for in situ scavenging of hydrogen sulfide
CA2889622C (en) * 2012-12-19 2021-02-02 Nalco Company Functionalized hydrogen sulfide scavengers
US9638018B2 (en) * 2012-12-19 2017-05-02 Ecolab Usa Inc. Scavenging hydrogen sulfide
MX2017002088A (es) * 2014-09-15 2017-05-04 Halliburton Energy Services Inc Uso de intensificador de hexametilentetramina para un sistema de acido emulsionado a temperatura alta.
US10435989B2 (en) 2014-12-23 2019-10-08 Multi-Chem Group, Llc Multi-stage treatment for iron sulfide scales
CN105401904B (zh) * 2015-12-28 2018-02-13 西安石油大学 一种可投入返出式井口保护器
CN107130952B (zh) * 2016-02-26 2019-01-01 中国石油化工股份有限公司 一种三级复合石油增产方法
MX2018016415A (es) * 2016-06-28 2019-05-09 Kuraray Co Composicion para eliminar sulfuro de hierro.
WO2018003623A1 (ja) * 2016-06-28 2018-01-04 株式会社クラレ 含硫黄化合物除去用の組成物
US20190367799A1 (en) * 2016-09-26 2019-12-05 Baker Hughes, A Ge Company, Llc Process and composition for removing metal sulfides
CA3028229A1 (en) * 2018-12-20 2020-06-20 Fluid Energy Group Ltd. Novel corrosion inhibition package
CA3028226A1 (en) * 2018-12-20 2020-06-20 Fluid Energy Group Ltd. Novel alkylsulfonic acid compostions
US11518932B2 (en) * 2019-05-21 2022-12-06 King Fahd University Of Petroleum And Minerals Methods of inhibiting corrosion of metals from acid stimulation of an oil and gas well
CA3057217A1 (en) * 2019-10-02 2021-04-02 Fluid Energy Group Ltd. Composition useful in metal sulfide scale removal
US20250320400A1 (en) 2024-04-12 2025-10-16 Schlumberger Technology Corporation Corrosion inhibitor and related methods of inhibiting corrosion
US20250320401A1 (en) 2024-04-12 2025-10-16 Schlumberger Technology Corporation Corrosion inhibitor and related methods of inhibiting the corrosion of metal surfaces

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426318A (en) * 1945-11-15 1947-08-26 Stanolind Oil & Gas Co Inhibiting corrosion
US2496594A (en) * 1947-09-11 1950-02-07 Cities Service Oil Co Formaldehyde corrosion inhibitor compositions
US2605223A (en) * 1950-05-26 1952-07-29 Gulf Oil Corp Chemical treatment of wells for the prevention of corrosion
US2882226A (en) * 1954-02-23 1959-04-14 Sinclair Refining Co Corrosion prevention method and composition
US3047511A (en) * 1959-08-24 1962-07-31 Dow Chemical Co Mineral acid inhibitor
US3122204A (en) * 1960-04-19 1964-02-25 Monsanto Chemicals A method for acidizing wells and composition therefor
US3453203A (en) * 1966-04-08 1969-07-01 Exxon Research Engineering Co Corrosion inhibition of metal surfaces by aromatic aldehydes
US3530059A (en) * 1968-05-17 1970-09-22 Exxon Research Engineering Co Aryl-substituted aliphatic aldehydes as corrosion inhibitors
US3537974A (en) * 1968-07-02 1970-11-03 Exxon Research Engineering Co Alkoxy-substituted aromatic aldehydes as corrosion inhibitors
US4191657A (en) 1975-12-24 1980-03-04 Phillips Petroleum Company Compositions for acidizing subterranean formations
US4103742A (en) * 1975-12-24 1978-08-01 Phillips Petroleum Company Method for acidizing subterranean formations
US4237975A (en) * 1978-04-11 1980-12-09 The Dow Chemical Company Well stimulation method using foamed acid
US4359391A (en) * 1978-05-24 1982-11-16 Exxon Production Research Co. Well treatment with emulsion dispersions
US4220550A (en) * 1978-12-06 1980-09-02 The Dow Chemical Company Composition and method for removing sulfide-containing scale from metal surfaces
US4310435A (en) * 1979-12-06 1982-01-12 The Dow Chemical Co. Method and composition for removing sulfide-containing scale from metal surfaces
US4574050A (en) 1980-03-18 1986-03-04 Dowell Schlumberger Incorporated Method for preventing the precipitation of ferric compounds during the acid treatment of wells
US4289639A (en) * 1980-10-03 1981-09-15 The Dow Chemical Company Method and composition for removing sulfide-containing scale from metal surfaces
US4493775A (en) * 1983-09-30 1985-01-15 The Dow Chemical Company Method and composition for corrosion
US4695389A (en) 1984-03-16 1987-09-22 Dowell Schlumberger Incorporated Aqueous gelling and/or foaming agents for aqueous acids and methods of using the same
US5258137A (en) 1984-12-24 1993-11-02 The Dow Chemical Company Viscoelastic surfactant based foam fluids
US4633949A (en) * 1985-02-12 1987-01-06 Dowell Schlumberger Incorporated Method of preventing precipitation of ferrous sulfide and sulfur during acidizing
DE3681378D1 (de) 1985-08-14 1991-10-17 Pumptech Nv Verfahren und zusammensetzung zum inhibieren der korrosion von eisen und stahl.
US4734259A (en) * 1985-11-22 1988-03-29 Dowell Schlumberger Incorporated Mixtures of α,β-unsaturated aldehides and surface active agents used as corrosion inhibitors in aqueous fluids
US5096618A (en) 1987-02-12 1992-03-17 Dowell Schlumberger Incorporated Process and composition for inhibiting high-temperature iron and steel corrosion
US4888121A (en) * 1988-04-05 1989-12-19 Halliburton Company Compositions and method for controlling precipitation when acidizing sour wells
US4949790A (en) * 1988-04-05 1990-08-21 Halliburton Company Compositions and method for controlling precipitation when acidizing sour wells
US5366643A (en) * 1988-10-17 1994-11-22 Halliburton Company Method and composition for acidizing subterranean formations
DE3927763A1 (de) * 1989-08-23 1991-02-28 Hoechst Ag Waessrige aldehydloesugen zum abfangen von schwefelwasserstoff
FR2666621B1 (fr) 1990-09-12 1993-05-14 Schlumberger Cie Dowell Produit et procede pour la diversion d'acide dans le traitement de formations souterraines.
AU643843B2 (en) 1990-11-05 1993-11-25 Halliburton Company Method and composition for acidizing subterranean formations
US5126059A (en) * 1991-05-28 1992-06-30 Nalco Chemical Company Precipitation control
US5355958A (en) * 1992-11-06 1994-10-18 Halliburton Company Low viscosity acid-in-oil emulsions and methods
US5609863A (en) * 1993-11-22 1997-03-11 Cox; James P. Glyoxal composition for reduction of animal waste stench and septicity, and method thereof
US5441929A (en) * 1994-06-23 1995-08-15 Halliburton Company Hydrochloric acid acidizing composition and method
US5551516A (en) 1995-02-17 1996-09-03 Dowell, A Division Of Schlumberger Technology Corporation Hydraulic fracturing process and compositions
US5807587A (en) * 1996-01-16 1998-09-15 Cox; James P. Aldehyde and/or antimicrobial composition for reduction of animal waste odors
US5697443A (en) * 1996-02-09 1997-12-16 Halliburton Energy Services, Inc. Method and composition for acidizing subterranean formations utilizing corrosion inhibitor intensifiers
US6117634A (en) 1997-03-05 2000-09-12 The Reagents Of The University Of Michigan Nucleic acid sequencing and mapping
US5854180A (en) * 1998-03-24 1998-12-29 Clearwater, Inc. Environmentally improved acid corrosion inhibitor

Also Published As

Publication number Publication date
CA2387416C (en) 2008-10-28
GB0207798D0 (en) 2002-05-15
EA004545B1 (ru) 2004-06-24
GB2373010B (en) 2004-05-26
NO20021731D0 (no) 2002-04-12
WO2001027440A1 (en) 2001-04-19
US6399547B1 (en) 2002-06-04
GB2373010A (en) 2002-09-11
AU7834500A (en) 2001-04-23
WO2001027440A9 (en) 2002-10-03
CA2387416A1 (en) 2001-04-19
NO20021731L (no) 2002-06-13
US6068056A (en) 2000-05-30

Similar Documents

Publication Publication Date Title
EA200200436A1 (ru) Жидкости для обработки скважин, включающие смешанные альдегиды
CY1105894T1 (el) Σωληνωση παροχης
ATE384025T1 (de) Verwendung einer vorrichtung zur bestrahlung von flüssigkeiten
BR0309976A (pt) Sistema de coleta de amostra inibidor de protease
EA200300906A1 (ru) Новые спиротрициклические производные и их применение в качестве ингибиторов фосфодиэстеразы-7
AR031651A1 (es) Fluidos para perforacion y mantenimiento de pozos que contienen chitosan acuoso con una viscosidad aumentada
PL346709A1 (en) Near infrared fluorescent contrast agent and fluorescence imaging
ATE262569T1 (de) Öl-basierte bohrflüssigkeit enthaltend eines temperaturstabiles umweltfreundliches emulgierungssystem
BR0308886A (pt) Sistema de execução de serviços para poços
GB2405214A (en) Pumping system for oil wells
ES2105999T3 (es) Procedimiento para la preparacion industrial de fosfatidilserina.
DE50109389D1 (de) Anbohrarmatur
EA200300377A1 (ru) Производные 2-амино-2-алкил-5-гептеновой и -гептиновой кислот, которые могут быть использованы в качестве ингибиторов синтетазы оксида азота
PT1049753E (pt) Fluido de aquecimento/arrefecimento resistente a congelacao
TR200103847T2 (tr) 3-Hidroksipropanal hazırlanması için usul
ES2135010T3 (es) Metodo para tratar un componente, de un sistema de suministro de agua potable, hecho de una aleacion a base de cobre.
GB2410522A (en) Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids
FI953662A0 (fi) Hartsisideainekoostumuksia
BR0204648A (pt) Métodos para representação compacta de sinalização de multi-códigos, e para decodificar uma palavra de código de sinalização de multi-códigos, sistema para representação compacta de sinalização de multi-códigos, e, dispositivo móvel capaz de receber uma palavra de código representando sinalização de multi-códigos
EA200200757A1 (ru) Каротажная система для ствола буровой скважины
DK1141293T3 (da) Vaskulær endotelial vækstfaktor-X
EA200200798A1 (ru) Кальцилитические соединения
DE60207442D1 (de) VERWENDUNG EINER KOMBINATIONSZUSAMMENSETZUNG BESTEHEND AUS PROPIONYL L-CARNITIN UND WEITEREn WIRKSTOFFEn ZUR BEHANDLUNG DER EREKTILEN DYSFUNKTION
AR020703A1 (es) Barra de limpieza de superficies duras.
ES2186211T3 (es) Procedimiento para la obtencion de 2-cianoindan-1-onas.

Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM BY KG MD TJ TM

MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AZ KZ RU