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NO20003516D0 - Ledende medie for Õpenhulls logging og logging under boring - Google Patents

Ledende medie for Õpenhulls logging og logging under boring

Info

Publication number
NO20003516D0
NO20003516D0 NO20003516A NO20003516A NO20003516D0 NO 20003516 D0 NO20003516 D0 NO 20003516D0 NO 20003516 A NO20003516 A NO 20003516A NO 20003516 A NO20003516 A NO 20003516A NO 20003516 D0 NO20003516 D0 NO 20003516D0
Authority
NO
Norway
Prior art keywords
logging
during drilling
open hole
leading media
leading
Prior art date
Application number
NO20003516A
Other languages
English (en)
Other versions
NO20003516L (no
Inventor
Arvind D Patel
Original Assignee
Mi Llc
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
Priority claimed from US09/021,013 external-priority patent/US6029755A/en
Application filed by Mi Llc filed Critical Mi Llc
Publication of NO20003516D0 publication Critical patent/NO20003516D0/no
Publication of NO20003516L publication Critical patent/NO20003516L/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
    • 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
    • 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
    • C09K2208/18—Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/30—Assessment of water resources
    • 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

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
NO20003516A 1998-01-08 2000-07-07 Ledende medium for Õpenhulls logging og logging under boring NO20003516L (no)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US426798A 1998-01-08 1998-01-08
US09/013,454 US5990050A (en) 1998-01-08 1998-01-26 Water soluble invert emulsions
US09/021,013 US6029755A (en) 1998-01-08 1998-02-09 Conductive medium for openhole logging and logging while drilling
PCT/US1999/000439 WO1999035211A1 (en) 1998-01-08 1999-01-08 Conductive medium for openhole logging and logging while drilling

Publications (2)

Publication Number Publication Date
NO20003516D0 true NO20003516D0 (no) 2000-07-07
NO20003516L NO20003516L (no) 2000-08-28

Family

ID=21709967

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20003516A NO20003516L (no) 1998-01-08 2000-07-07 Ledende medium for Õpenhulls logging og logging under boring

Country Status (6)

Country Link
US (1) US5990050A (no)
EP (1) EP1047748A1 (no)
AU (2) AU736905B2 (no)
CA (1) CA2318562C (no)
NO (1) NO20003516L (no)
WO (2) WO1999035211A1 (no)

Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU717046B2 (en) * 1995-09-11 2000-03-16 M-I L.L.C. Glycol based drilling fluid
US6793025B2 (en) 1998-01-08 2004-09-21 M-I L. L. C. Double emulsion based drilling fluids
US6405809B2 (en) 1998-01-08 2002-06-18 M-I Llc Conductive medium for openhold 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
AU2001253283A1 (en) * 2000-04-07 2001-10-23 Palmer, Bentley J. Wellbore fluids and their application
US7749945B2 (en) * 2000-06-13 2010-07-06 Baker Hughes Incorporated Invert emulsion drilling fluid systems comprising an emulsified aqueous phase comprising dispersed integral latex particles
RU2203919C2 (ru) * 2000-12-29 2003-05-10 Тюменский государственный нефтегазовый университет Жидкость для глушения скважин
RU2190657C1 (ru) * 2001-04-02 2002-10-10 Рожелюк Богдан Васильевич Жидкость глушения нефтегазовой скважины
RU2187532C1 (ru) * 2001-04-05 2002-08-20 ООО "Уренгойгазпром" ОАО "Газпром" Жидкость для глушения скважин
RU2203304C2 (ru) * 2001-07-02 2003-04-27 Общество с ограниченной ответственностью "ТюменНИИгипрогаз" Жидкость для глушения скважин
RU2200753C1 (ru) * 2001-07-17 2003-03-20 Григорий Степанович Поп Реагент для инвертных эмульсионных растворов
RU2276180C2 (ru) * 2001-07-17 2006-05-10 Григорий Степанович Поп Состав для глушения и заканчивания скважин
RU2188843C1 (ru) * 2001-07-23 2002-09-10 ЗАО "Полином" Технологическая жидкость для перфорации и глушения скважин
RU2223297C2 (ru) * 2001-07-25 2004-02-10 Дочернее общество с ограниченной ответственностью "Башкирский научно-исследовательский и проектный институт нефти" ОАО АНК "Башнефть" Смазочная добавка для бурового раствора на водной основе
RU2190004C1 (ru) * 2001-09-19 2002-09-27 Закрытое акционерное общество "Сибирский капитальный ремонт скважин" Жидкость для глушения скважин
RU2205855C1 (ru) * 2001-10-09 2003-06-10 Государственное научно-производственное предприятие "Азимут" Способ получения инвертно-эмульсионного раствора
RU2187625C1 (ru) * 2001-10-26 2002-08-20 Некоммерческое партнерство Институт системных исследований процессов нефтегазодобычи Способ глушения эксплуатационной скважины (варианты)
RU2212527C1 (ru) * 2002-03-12 2003-09-20 Лазарев Сергей Григорьевич Способ глушения скважин
RU2250360C1 (ru) * 2003-07-17 2005-04-20 Открытое акционерное общество "Сильвинит" Способ глушения скважин
US7192907B2 (en) * 2003-09-03 2007-03-20 M-I L.L.C. High performance water-based drilling mud and method of use
US8030252B2 (en) * 2004-03-12 2011-10-04 Halliburton Energy Services Inc. Polymer-based, surfactant-free, emulsions and methods of use thereof
US7507694B2 (en) * 2004-03-12 2009-03-24 Halliburton Energy Services, Inc. Surfactant-free emulsions and methods of use thereof
US7534745B2 (en) * 2004-05-05 2009-05-19 Halliburton Energy Services, Inc. Gelled invert emulsion compositions comprising polyvalent metal salts of an organophosphonic acid ester or an organophosphinic acid and methods of use and manufacture
RU2260112C1 (ru) * 2004-05-18 2005-09-10 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный нефтяной технический университет (ГОУ ВПО УГНТУ) Жидкость для глушения скважин
RU2262587C1 (ru) * 2004-06-15 2005-10-20 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный нефтяной технический университет (ГОУ ВПО УГНТУ) Жидкость для глушения скважин
RU2262588C1 (ru) * 2004-06-15 2005-10-20 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный нефтяной технический университет (ГОУ ВПО УГНТУ) Жидкость для глушения скважин
RU2262589C1 (ru) * 2004-06-17 2005-10-20 Государственное образовательное учреждение высшего профессионального образования Уфимский государственный нефтяной технический университет (ГОУ ВПО УГНТУ) Жидкость для глушения скважин
US7178610B2 (en) * 2004-08-11 2007-02-20 Halliburton Energy Services, Inc. Subterranean treatment fluids comprising polyoxazoline compositions and methods of use in subterranean formations
RU2279462C1 (ru) * 2005-01-27 2006-07-10 Владимир Анатольевич Волков Жидкость глушения нефтегазовой скважины
RU2313557C2 (ru) * 2005-02-22 2007-12-27 Общество с ограниченной ответственностью "Кубаньгазпром" Многофункциональная гидрофильная эмульсионная система для ремонта скважин (варианты)
RU2283337C1 (ru) * 2005-11-21 2006-09-10 Давид Аронович Каушанский Жидкость глушения нефтяных и газовых скважин
EA016562B1 (ru) 2006-06-26 2012-05-30 Бп Эксплорейшн Оперейтинг Компани Лимитед Скважинный раствор, способ проведения скважинной операции с применением этого раствора, применение полимера
US8524640B2 (en) * 2006-07-07 2013-09-03 M-I L.L.C. Fluid loss additive for oil-based muds
WO2008035279A2 (en) * 2006-09-20 2008-03-27 Pt. Pertamina (Persero) Non-toxic mineral oil and its preparation process as drilling mud base material
US20080169103A1 (en) * 2007-01-12 2008-07-17 Carbajal David L Surfactant Wash Treatment Fluids and Associated Methods
US8220548B2 (en) * 2007-01-12 2012-07-17 Halliburton Energy Services Inc. Surfactant wash treatment fluids and associated methods
RU2333233C1 (ru) * 2007-01-26 2008-09-10 Николай Александрович Петров Жидкость для глушения и перфорации скважин
US20080194433A1 (en) * 2007-02-14 2008-08-14 Ahmadi Tehrani Method for viscosifying invert emulsion drilling fluids
US8703658B2 (en) * 2007-03-09 2014-04-22 Canadian Energy Services L.P. Drilling fluid and methods
RU2353756C2 (ru) * 2007-04-18 2009-04-27 Александр Васильевич Кустышев Способ консервации газовых и газоконденсатных скважин с высокой проницаемостью продуктивного пласта в условиях аномально низких пластовых давлений
RU2353757C2 (ru) * 2007-04-18 2009-04-27 Александр Васильевич Кустышев Способ консервации газовой скважины в условиях аномально низких пластовых давлений
US7906464B2 (en) 2008-05-13 2011-03-15 Halliburton Energy Services, Inc. Compositions and methods for the removal of oil-based filtercakes
EP2154224A1 (en) 2008-07-25 2010-02-17 Bp Exploration Operating Company Limited Method of carrying out a wellbore operation
BRPI0823062A2 (pt) * 2008-09-11 2015-06-16 Mi Llc Fluidos de furo de poço de emulsão invertida e método para a redução de toxicidade dos mesmos
US7833943B2 (en) 2008-09-26 2010-11-16 Halliburton Energy Services Inc. Microemulsifiers and methods of making and using same
US8759260B2 (en) 2009-06-02 2014-06-24 Chevron Phillips Chemical Company Lp Wellbore fluid additives and methods of producing the same
US20130233623A1 (en) 2010-11-25 2013-09-12 Bp Exploration Operating Company Limited Consolidation
WO2012152889A1 (en) 2011-05-12 2012-11-15 Bp Exploration Operating Company Limited Method of carrying out a wellbore operation
RU2482152C1 (ru) * 2011-11-24 2013-05-20 ООО "РН-УфаНИПИнефть" Технологическая скважинная жидкость с низкими повреждающими свойствами и контролируемым поглощением в термобарических условиях пласта
RU2499019C1 (ru) * 2012-04-24 2013-11-20 Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий-Газпром ВНИИГАЗ" (ООО "Газпром ВНИИГАЗ") Жидкость для глушения скважин
US20130288933A1 (en) * 2012-04-30 2013-10-31 Chevron Phillips Chemical Company Lp Rheology Modifiers
CN103146363B (zh) * 2013-03-11 2015-06-17 中国石油集团川庆钻探工程有限公司长庆钻井总公司 复合盐低活度防塌钻井液及其施工方法
AU2014395133B2 (en) * 2014-05-17 2016-09-15 Halliburton Energy Services, Inc. Thermal thickening in invert emulsion treatment fluids
AU2014396227B2 (en) * 2014-06-04 2017-04-20 Halliburton Energy Services, Inc. An invert emulsion drilling fluid containing an internal phase of a polyol and salt-water solution
WO2016014512A1 (en) 2014-07-21 2016-01-28 Baker Hughes Incorporated Electrically conductive oil-based fluids
WO2016014525A1 (en) 2014-07-21 2016-01-28 Baker Hughes Incorporated Electrically conductive oil-based fluids
RU2595019C1 (ru) * 2015-05-12 2016-08-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Технологическая жидкость для глушения скважин на основе спиртов
US10844264B2 (en) * 2015-06-30 2020-11-24 Exxonmobil Chemical Patents Inc. Lubricant compositions comprising diol functional groups and methods of making and using same
US20170002252A1 (en) 2015-06-30 2017-01-05 Exxonmobil Chemical Patents Inc. Lubricant Compositions and Methods of Making and Using Same
RU2630007C2 (ru) * 2016-02-24 2017-09-05 Закрытое акционерное общество "Октопус" Жидкость для глушения и промывки нефтяных и газовых скважин
GB2592134B (en) * 2018-11-19 2023-02-08 Halliburton Energy Services Inc Oil-based drill-in fluid with enhanced fluid loss properties
RU2753299C1 (ru) * 2020-11-10 2021-08-12 Акционерное общество "Северо-Кавказский научно-исследовательский проектный институт природных газов" (АО "СевКавНИПИгаз") Сухая смесь для приготовления жидкости глушения
US12325821B2 (en) 2022-07-12 2025-06-10 Secure Specialty Chemicals Corp. Lubricant blends and methods for improving lubricity of brine-based drilling fluids
CN117430807B (zh) * 2022-07-15 2025-09-02 中石化石油工程技术服务有限公司 一种基于单宁酸的超支化纳米粒子及其制备方法和应用

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB751191A (en) * 1953-07-31 1956-06-27 Bataafsche Petroleum Drilling fluids suitable for use in earth-boring operations
US4012329A (en) * 1973-08-27 1977-03-15 Marathon Oil Company Water-in-oil microemulsion drilling fluids
US4464269A (en) * 1981-07-29 1984-08-07 Exxon Research & Engineering Co. Additive composition for release of stuck drill pipe
US4508628A (en) * 1983-05-19 1985-04-02 O'brien-Goins-Simpson & Associates Fast drilling invert emulsion drilling fluids
DE3403021A1 (de) * 1984-01-28 1985-08-01 Henkel KGaA, 4000 Düsseldorf Verfahren zur herstellung von gemischen aus c(pfeil abwaerts)6(pfeil abwaerts)-c(pfeil abwaerts)1(pfeil abwaerts)(pfeil abwaerts)0(pfeil abwaerts)-fettsaeuren
NO873531L (no) * 1987-08-21 1989-02-22 Sintef Basisvaeske for tilberedelse av vaesker for anvendelse ved utvinning av petroleumforekomster.
US4830765A (en) * 1987-12-04 1989-05-16 Baker Hughes Incorporated Modified non-polluting liquid phase shale swelling inhibition drilling fluid and method of using same
US4941981A (en) * 1987-12-04 1990-07-17 Baker Hughes Incorporated Modified non-polluting liquid phase shale swelling inhibition drilling fluid
US4963273A (en) * 1987-12-04 1990-10-16 Baker Hughes Incorporated Modified non-polluting liquid phase shale swelling inhibition drilling fluid and method of using same
DE3801476A1 (de) * 1988-01-20 1989-08-03 Henkel Kgaa Zusammensetzungen zur befreiung festgesetzter bohrgestaenge
US5072794A (en) * 1988-09-30 1991-12-17 Shell Oil Company Alcohol-in-oil drilling fluid system
GB2223255B (en) * 1988-09-30 1992-11-11 Shell Int Research Invert emulsion drilling fluid
US4984561A (en) * 1988-12-16 1991-01-15 Green Cone Inc Container for disposing waste
DE3842703A1 (de) * 1988-12-19 1990-06-21 Henkel Kgaa Verwendung ausgewaehlter esteroele in bohrspuelungen insbesondere zur off-shore-erschliessung von erdoel- bzw. erdgasvorkommen (ii)
DE3842659A1 (de) * 1988-12-19 1990-06-28 Henkel Kgaa Verwendung ausgewaehlter esteroele in bohrspuelungen insbesondere zur off-shore-erschliessung von erdoel- bzw. erdgasvorkommen (i)
DE3911238A1 (de) * 1989-04-07 1990-10-11 Henkel Kgaa Oleophile alkohole als bestandteil von invert-bohrspuelungen
US5189012A (en) * 1990-03-30 1993-02-23 M-I Drilling Fluids Company Oil based synthetic hydrocarbon drilling fluid
US5141920A (en) * 1990-06-11 1992-08-25 Baker Hughes Incorporated Hydrocarbon invert emulsions for use in well drilling operations
US5057234A (en) * 1990-06-11 1991-10-15 Baker Hughes Incorporated Non-hydrocarbon invert emulsions for use in well drilling operations
GB2251447A (en) * 1991-01-04 1992-07-08 Exxon Production Research Co Invert emulsion for use in a drilling fluid
GB9100699D0 (en) * 1991-01-12 1991-02-27 British Petroleum Co Plc Drilling fluid additive
GB2252993B (en) * 1991-02-23 1994-09-28 David Brankling Drilling fluid composition
US5120708A (en) * 1991-03-06 1992-06-09 Baker Hughes Incorporated Non-poluting anti-stick water-base drilling fluid modifier and method of use
WO1993016145A1 (en) * 1992-02-12 1993-08-19 Exxon Chemical Patents Inc. Functional fluid
GB9210578D0 (en) * 1992-05-18 1992-07-01 Exxon Chemical Patents Inc Functional fluid
AU6087994A (en) * 1993-01-14 1994-08-15 M-I Drilling Fluids Company Non-fluorescing oil-based drilling fluid
GB9321856D0 (en) * 1993-10-22 1993-12-15 Bp Chem Int Ltd Drilling fluid
USH1611H (en) * 1993-11-04 1996-11-05 M-I Drilling Fluids Company Glycols as internal phase in oil well drilling fluids
NO943734L (no) * 1993-11-10 1995-05-11 Baker Hughes Inc Brönnfluidadditiv, fremgangsmåte for behandling av en brönnvæske, brönnvæske og fremgangsmåte for behandling av brönnutstyr
WO1996019545A1 (en) * 1994-12-22 1996-06-27 Union Oil Company Of California High density wellbore fluid
US5635458A (en) * 1995-03-01 1997-06-03 M-I Drilling Fluids, L.L.C. Water-based drilling fluids for reduction of water adsorption and hydration of argillaceous rocks
AU717046B2 (en) * 1995-09-11 2000-03-16 M-I L.L.C. Glycol based drilling fluid
US6006831A (en) * 1997-09-12 1999-12-28 Schlumberger Technology Corporation Electrical well logging fluid and method of using same

Also Published As

Publication number Publication date
WO1999035211A1 (en) 1999-07-15
AU2218799A (en) 1999-07-26
NO20003516L (no) 2000-08-28
CA2318562A1 (en) 1999-07-15
WO1999035213A1 (en) 1999-07-15
AU2109299A (en) 1999-07-26
US5990050A (en) 1999-11-23
EP1047748A1 (en) 2000-11-02
AU736905B2 (en) 2001-08-02
CA2318562C (en) 2006-03-14

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