NO160586C - Vaesketapsreduserende tilsetningsmiddel til anvendelse i en oljebasert borevaeske. - Google Patents

Vaesketapsreduserende tilsetningsmiddel til anvendelse i en oljebasert borevaeske.

Info

Publication number
NO160586C
NO160586C NO840101A NO840101A NO160586C NO 160586 C NO160586 C NO 160586C NO 840101 A NO840101 A NO 840101A NO 840101 A NO840101 A NO 840101A NO 160586 C NO160586 C NO 160586C
Authority
NO
Norway
Prior art keywords
oil
fluid loss
reducing additive
loss reducing
based drill
Prior art date
Application number
NO840101A
Other languages
English (en)
Norwegian (no)
Other versions
NO840101L (no
NO160586B (no
Inventor
David Longley Connell
Anthony John Gradwell
Original Assignee
Sandoz Ag
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 GB838300974A external-priority patent/GB8300974D0/en
Priority claimed from GB838317366A external-priority patent/GB8317366D0/en
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of NO840101L publication Critical patent/NO840101L/no
Publication of NO160586B publication Critical patent/NO160586B/no
Publication of NO160586C publication Critical patent/NO160586C/no

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02Well-drilling compositions
    • C09K8/32Non-aqueous well-drilling compositions, e.g. oil-based
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00Earth boring, well treating, and oil field chemistry
    • Y10S507/91Earth boring fluid devoid of discrete aqueous phase
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00Earth boring, well treating, and oil field chemistry
    • Y10S507/925Completion or workover fluid
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00Earth boring, well treating, and oil field chemistry
    • Y10S507/926Packer fluid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Lubricants (AREA)
  • Colloid Chemistry (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
NO840101A 1983-01-14 1984-01-12 Vaesketapsreduserende tilsetningsmiddel til anvendelse i en oljebasert borevaeske. NO160586C (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838300974A GB8300974D0 (en) 1983-01-14 1983-01-14 Organic compounds
GB838317366A GB8317366D0 (en) 1983-06-27 1983-06-27 Organic compounds

Publications (3)

Publication Number Publication Date
NO840101L NO840101L (no) 1984-07-16
NO160586B NO160586B (no) 1989-01-23
NO160586C true NO160586C (no) 1989-05-03

Family

ID=26284917

Family Applications (1)

Application Number Title Priority Date Filing Date
NO840101A NO160586C (no) 1983-01-14 1984-01-12 Vaesketapsreduserende tilsetningsmiddel til anvendelse i en oljebasert borevaeske.

Country Status (8)

Country Link
US (1) US4671883A (nl)
CH (1) CH663029A5 (nl)
DE (1) DE3400164A1 (nl)
FR (1) FR2539425B1 (nl)
GB (1) GB2135321B (nl)
IT (1) IT1198753B (nl)
NL (1) NL8400097A (nl)
NO (1) NO160586C (nl)

Families Citing this family (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597878A (en) * 1984-12-31 1986-07-01 Venture Innovations, Inc. Polyphenolic acid adducts
US5032296A (en) * 1988-12-05 1991-07-16 Phillips Petroleum Company Well treating fluids and additives therefor
US4938803A (en) * 1989-07-05 1990-07-03 Nalco Chemical Company Vinyl grafted lignite fluid loss additives
US5213166A (en) * 1989-12-12 1993-05-25 Mitsui-Cyanamid, Ltd. Pile driving and pile removing method
US5114598B1 (en) * 1990-02-01 1997-08-26 Sun Drilling Products Corp Method of making drilling fluid containing asphaltite in a dispersed state
US5114597A (en) * 1990-02-22 1992-05-19 Sun Drilling Products Corporation Method of making a drilling fluid containing carbon black in a dispersed state
US5134215A (en) * 1990-10-15 1992-07-28 Nalco Chemical Company Method for reducing fluid loss from oilfield cement slurries using vinyl grafted wattle tannin
US5147964A (en) * 1990-10-15 1992-09-15 Nalco Chemical Company Method for reducing fluid loss from oilfield cement slurries using vinyl grafted wattle tannin
US5099922A (en) * 1991-03-26 1992-03-31 The Western Company Of North America Control of gas flow through cement column
US5333698A (en) * 1993-05-21 1994-08-02 Union Oil Company Of California White mineral oil-based drilling fluid
CA2140736C (en) * 1994-02-25 1999-08-31 Simon Suarez A thixotropic fluid for well insulation
US5629270A (en) * 1994-06-30 1997-05-13 Union Oil Company Of California Thermally stable oil-base drilling fluid
US5635457A (en) * 1995-04-17 1997-06-03 Union Oil Company Of California Non-toxic, inexpensive synthetic drilling fluid
US5958845A (en) * 1995-04-17 1999-09-28 Union Oil Company Of California Non-toxic, inexpensive synthetic drilling fluid
US5789349A (en) * 1996-03-13 1998-08-04 M-I Drilling Fluids, L.L.C. Water-based drilling fluids with high temperature fluid loss control additive
US5711383A (en) * 1996-04-19 1998-01-27 Halliburton Company Cementitious well drilling fluids and methods
US6806233B2 (en) * 1996-08-02 2004-10-19 M-I Llc Methods of using reversible phase oil based drilling fluid
US5843872A (en) * 1997-11-19 1998-12-01 Sun Drilling Products Corp Drilling fluid system and related methods
US5942467A (en) * 1997-12-08 1999-08-24 Sun Drilling Products Corporation Drilling fluid system containing a combination of hydrophilic carbon black/asphaltite and a refined fish oil/glycol mixture and related methods
US6258756B1 (en) * 1999-01-26 2001-07-10 Spectral, Inc. Salt water drilling mud and method
US8053394B2 (en) * 2000-06-13 2011-11-08 Baker Hughes Incorporated Drilling fluids with redispersible polymer powders
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
US6703351B2 (en) * 2000-06-13 2004-03-09 Baker Hughes Incorporated Water-based drilling fluids using latex additives
US7271131B2 (en) * 2001-02-16 2007-09-18 Baker Hughes Incorporated Fluid loss control and sealing agent for drilling depleted sand formations
US20060270562A1 (en) * 2003-08-04 2006-11-30 Baker Hughes Incorporated Drilling fluids with redispersible polymer powders
US20030036484A1 (en) * 2001-08-14 2003-02-20 Jeff Kirsner Blends of esters with isomerized olefins and other hydrocarbons as base oils for invert emulsion oil muds
US7456135B2 (en) * 2000-12-29 2008-11-25 Halliburton Energy Services, Inc. Methods of drilling using flat rheology drilling fluids
US6887832B2 (en) 2000-12-29 2005-05-03 Halliburton Energy Service,S Inc. Method of formulating and using a drilling mud with fragile gels
DK1346006T3 (en) 2000-12-29 2015-02-23 Halliburton Energy Serv Inc Thinners for drilling fluids with the inverse emulsion
US7435706B2 (en) * 2000-12-29 2008-10-14 Halliburton Energy Services, Inc. Thinners for invert emulsions
US7572755B2 (en) * 2000-12-29 2009-08-11 Halliburton Energy Services, Inc. Drilling fluid comprising a vinyl neodecanoate polymer and method for enhanced suspension
US7351680B2 (en) * 2001-09-19 2008-04-01 Hayes James R High performance water-based mud system
US6818596B1 (en) * 2001-09-19 2004-11-16 James Hayes Dry mix for water based drilling fluid
US7008907B2 (en) * 2001-10-31 2006-03-07 Halliburton Energy Services, Inc. Additive for oil-based drilling fluids
US7534746B2 (en) * 2001-10-31 2009-05-19 Halliburton Energy Services, Inc. Metallic soaps of modified tall oil acids
US7271132B2 (en) * 2001-10-31 2007-09-18 Halliburton Energy Services, Inc. Metallic soaps of modified fatty acids and rosin acids and methods of making and using same
US6620770B1 (en) 2001-10-31 2003-09-16 Halliburton Energy Services, Inc. Additive for oil-based drilling fluids
US7066284B2 (en) * 2001-11-14 2006-06-27 Halliburton Energy Services, Inc. Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
US6702044B2 (en) * 2002-06-13 2004-03-09 Halliburton Energy Services, Inc. Methods of consolidating formations or forming chemical casing or both while drilling
US7741251B2 (en) * 2002-09-06 2010-06-22 Halliburton Energy Services, Inc. Compositions and methods of stabilizing subterranean formations containing reactive shales
US7091159B2 (en) * 2002-09-06 2006-08-15 Halliburton Energy Services, Inc. Compositions for and methods of stabilizing subterranean formations containing clays
US6730637B1 (en) * 2002-12-06 2004-05-04 Chevron Phillips Chemical Company, Lp Reducing fluid loss in a drilling fluid
US7220708B2 (en) * 2003-02-27 2007-05-22 Halliburton Energy Services, Inc. Drilling fluid component
US20040229756A1 (en) * 2003-05-16 2004-11-18 Eoff Larry S. Method for stimulating hydrocarbon production and reducing the production of water from a subterranean formation
US7117942B2 (en) * 2004-06-29 2006-10-10 Halliburton Energy Services, Inc. Methods useful for controlling fluid loss during sand control operations
US8631869B2 (en) 2003-05-16 2014-01-21 Leopoldo Sierra Methods useful for controlling fluid loss in subterranean treatments
US7759292B2 (en) * 2003-05-16 2010-07-20 Halliburton Energy Services, Inc. Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation
US8251141B2 (en) 2003-05-16 2012-08-28 Halliburton Energy Services, Inc. Methods useful for controlling fluid loss during sand control operations
US8181703B2 (en) 2003-05-16 2012-05-22 Halliburton Energy Services, Inc. Method useful for controlling fluid loss in subterranean formations
US8091638B2 (en) * 2003-05-16 2012-01-10 Halliburton Energy Services, Inc. Methods useful for controlling fluid loss in subterranean formations
US8962535B2 (en) 2003-05-16 2015-02-24 Halliburton Energy Services, Inc. Methods of diverting chelating agents in subterranean treatments
US7182136B2 (en) * 2003-07-02 2007-02-27 Halliburton Energy Services, Inc. Methods of reducing water permeability for acidizing a subterranean formation
US8278250B2 (en) * 2003-05-16 2012-10-02 Halliburton Energy Services, Inc. Methods useful for diverting aqueous fluids in subterranean operations
CN1802603A (zh) 2003-07-17 2006-07-12 霍尼韦尔国际公司 用于高级微电子应用的平面化薄膜及其生产装置和方法
JP4230881B2 (ja) * 2003-10-23 2009-02-25 富士通マイクロエレクトロニクス株式会社 半導体集積回路、及びレベル変換回路
US7563750B2 (en) * 2004-01-24 2009-07-21 Halliburton Energy Services, Inc. Methods and compositions for the diversion of aqueous injection fluids in injection operations
US7297662B2 (en) * 2004-01-29 2007-11-20 Turbo-Chem International, Inc. Method and composition for inhibiting lost circulation during well operation
US7159656B2 (en) * 2004-02-18 2007-01-09 Halliburton Energy Services, Inc. Methods of reducing the permeabilities of horizontal well bore sections
US7207387B2 (en) * 2004-04-15 2007-04-24 Halliburton Energy Services, Inc. Methods and compositions for use with spacer fluids used in subterranean well bores
US7114568B2 (en) * 2004-04-15 2006-10-03 Halliburton Energy Services, Inc. Hydrophobically modified polymers for a well completion spacer fluid
US7216707B2 (en) * 2004-06-21 2007-05-15 Halliburton Energy Services, Inc. Cement compositions with improved fluid loss characteristics and methods of cementing using such cement compositions
US7749943B2 (en) * 2004-12-01 2010-07-06 Baker Hughes Incorporated Method and drilling fluid systems and lost circulation pills adapted to maintain the particle size distribution of component latex particles before and after freezing of the latex particles in the presence of water
US7493957B2 (en) 2005-07-15 2009-02-24 Halliburton Energy Services, Inc. Methods for controlling water and sand production in subterranean wells
US20080110624A1 (en) * 2005-07-15 2008-05-15 Halliburton Energy Services, Inc. Methods for controlling water and particulate production in subterranean wells
US7341106B2 (en) * 2005-07-21 2008-03-11 Halliburton Energy Services, Inc. Methods for wellbore strengthening and controlling fluid circulation loss
CN1305965C (zh) * 2005-08-05 2007-03-21 倪红霞 阳离子沥青防塌剂乳胶及其生产方法和使用方法
US7441598B2 (en) * 2005-11-22 2008-10-28 Halliburton Energy Services, Inc. Methods of stabilizing unconsolidated subterranean formations
CN100362077C (zh) * 2005-12-27 2008-01-16 宋福如 钻井液用硅氟防塌降滤失剂
US8235119B2 (en) * 2006-03-30 2012-08-07 Canadian Energy Services, Lp Drilling fluid and method for reducing lost circulation
WO2007107015A1 (en) * 2006-03-30 2007-09-27 Canadian Energy Services L.P. Drilling fluid and method for reducing lost circulation
US7678743B2 (en) 2006-09-20 2010-03-16 Halliburton Energy Services, Inc. Drill-in fluids and associated methods
US7678742B2 (en) 2006-09-20 2010-03-16 Halliburton Energy Services, Inc. Drill-in fluids and associated methods
US7687438B2 (en) 2006-09-20 2010-03-30 Halliburton Energy Services, Inc. Drill-in fluids and associated methods
US7730950B2 (en) 2007-01-19 2010-06-08 Halliburton Energy Services, Inc. Methods for treating intervals of a subterranean formation having variable permeability
US7934557B2 (en) 2007-02-15 2011-05-03 Halliburton Energy Services, Inc. Methods of completing wells for controlling water and particulate production
MX2010000203A (es) * 2007-07-06 2010-07-05 Canadian Energy Services Lp Aditivo de fluido de perforacion para reducir la circulación perdida en una operacion de perforacion.
US7552771B2 (en) * 2007-11-14 2009-06-30 Halliburton Energy Services, Inc. Methods to enhance gas production following a relative-permeability-modifier treatment
US20090253594A1 (en) * 2008-04-04 2009-10-08 Halliburton Energy Services, Inc. Methods for placement of sealant in subterranean intervals
US7998910B2 (en) 2009-02-24 2011-08-16 Halliburton Energy Services, Inc. Treatment fluids comprising relative permeability modifiers and methods of use
US8420576B2 (en) * 2009-08-10 2013-04-16 Halliburton Energy Services, Inc. Hydrophobically and cationically modified relative permeability modifiers and associated methods
CN102965083B (zh) * 2012-11-12 2016-01-13 孟州市德葛净水材料有限公司 钻井液用复合树脂抗高温防塌降失水剂
EP3004069B1 (en) 2013-05-28 2017-04-19 Empire Technology Development LLC Humic acid derivatives and methods of preparation and use
EP3004070B1 (en) * 2013-05-28 2017-10-11 Empire Technology Development LLC Antioxidant humic acid derivatives and methods of preparation and use
EP3013367B1 (en) 2013-06-28 2018-01-17 Empire Technology Development LLC Edible plasticizers for food and food packaging films
EA033117B1 (ru) 2013-11-19 2019-08-30 ДЖОРДЖИЯ-ПЭСИФИК КЕМИКАЛЗ ЭлЭлСи Способ обработки бурового раствора на масляной основе и способ обработки подземного формирования обработанным буровым раствором на масляной основе
CN103642471A (zh) * 2013-12-19 2014-03-19 中国石油集团渤海钻探工程有限公司 油基钻井液用有机复合降滤失剂及其制备方法
US9932511B2 (en) * 2014-01-17 2018-04-03 Elevance Renewable Sciences, Inc. Natural oil-derived wellbore compositions and methods of use
MX2016014455A (es) * 2014-05-05 2017-04-27 Hercules Llc Aditivos de perdida de fluido de alta temperatura y alta presion y metodos de uso de los mismos.
CN111533833B (zh) * 2020-06-08 2022-11-22 保定市三拓化工产品有限公司 一种钻井液降滤失剂的制备方法
CN111500269B (zh) * 2020-06-08 2022-06-28 保定市三拓化工产品有限公司 一种钻井液降滤失剂
CN113801338A (zh) * 2020-06-11 2021-12-17 中国石油天然气集团有限公司 降滤失组合物、降滤失剂及降滤失剂的制备方法和应用
CN114574178A (zh) * 2022-03-17 2022-06-03 昆明金思达科技有限责任公司 一种高效型深井钻井液处理剂及其制备方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969321A (en) * 1956-12-03 1961-01-24 Phillips Petroleum Co Drilling fluids and method of using same
US3168475A (en) * 1961-03-15 1965-02-02 Nat Lead Co Well-working fluids
US3207693A (en) * 1961-12-14 1965-09-21 Exxon Research Engineering Co Treatment of wells
US3351079A (en) * 1962-09-28 1967-11-07 Dow Chemical Co Low fluid loss compositions
US3310125A (en) * 1963-08-29 1967-03-21 Shell Oil Co Method for increasing drilling rate
US3379650A (en) * 1963-12-20 1968-04-23 Nat Lead Co Dispersion of long chain alkyl ammonium humate in organic liquid
US3775447A (en) * 1966-04-01 1973-11-27 Nat Lead Co Lignite products and compositions thereof
US3494865A (en) * 1966-04-01 1970-02-10 Nat Lead Co Lignite products and compositions thereof
US3537525A (en) * 1968-01-15 1970-11-03 Union Oil Co Method of decreasing friction loss in a well fracturing process
GB1275619A (en) * 1968-09-04 1972-05-24 Int Minerals & Chem Corp A process for preparing graft copolymers of acrylic acid with polyhydroxy polymeric compounds and the graft copolymers thereof
US3956140A (en) * 1970-08-03 1976-05-11 Dresser Industries, Inc. Drilling fluids
CA918348A (en) * 1970-08-03 1973-01-02 W. Nahm Jang Drilling fluids
US3630280A (en) * 1970-08-13 1971-12-28 Union Oil Co Method and composition for treating subterranean formations
US3738934A (en) * 1971-06-17 1973-06-12 Milchem Inc Oil base drilling fluid composition and process
US4650593A (en) * 1977-09-19 1987-03-17 Nl Industries, Inc. Water-based drilling fluids having enhanced fluid loss control
SU773049A1 (ru) * 1978-11-27 1980-10-23 Львовский Ордена Ленина Политехнический Институт Способ получени реагентов дл промывочных жидкостей
EP0049484B1 (en) * 1980-10-07 1984-12-19 B W Mud Limited A process for the production of a fluid loss reducing additive for an oil-based well working fluid
US4436636A (en) * 1981-12-21 1984-03-13 Nl Industries, Inc. Invert emulsion well servicing fluids
GB2117431B (en) * 1982-03-30 1985-09-18 Sandoz Ltd Improvements in or relating to fluid loss reducing additives

Also Published As

Publication number Publication date
GB2135321A (en) 1984-08-30
IT1198753B (it) 1988-12-21
FR2539425B1 (fr) 1987-03-20
IT8447539A0 (it) 1984-01-13
GB2135321B (en) 1986-04-09
NO840101L (no) 1984-07-16
DE3400164A1 (de) 1984-07-19
NL8400097A (nl) 1984-08-01
GB8400541D0 (en) 1984-02-15
US4671883A (en) 1987-06-09
CH663029A5 (de) 1987-11-13
NO160586B (no) 1989-01-23
FR2539425A1 (fr) 1984-07-20

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