EA200100180A1 - Способ и раствор для бурения или эксплуатации скважины, способ предотвращения поглощения бурового раствора - Google Patents

Способ и раствор для бурения или эксплуатации скважины, способ предотвращения поглощения бурового раствора

Info

Publication number
EA200100180A1
EA200100180A1 EA200100180A EA200100180A EA200100180A1 EA 200100180 A1 EA200100180 A1 EA 200100180A1 EA 200100180 A EA200100180 A EA 200100180A EA 200100180 A EA200100180 A EA 200100180A EA 200100180 A1 EA200100180 A1 EA 200100180A1
Authority
EA
Eurasian Patent Office
Prior art keywords
fluid
drilling
reducing
well
solution
Prior art date
Application number
EA200100180A
Other languages
English (en)
Other versions
EA002832B1 (ru
Inventor
Томми Ф. Бруки
Original Assignee
Эктисистимс, Инк.
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 Эктисистимс, Инк. filed Critical Эктисистимс, Инк.
Publication of EA200100180A1 publication Critical patent/EA200100180A1/ru
Publication of EA002832B1 publication Critical patent/EA002832B1/ru

Links

Classifications

    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/003—Means for stopping loss of drilling fluid
    • 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
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/06—Clay-free compositions
    • C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
    • 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
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/14—Clay-containing compositions
    • C09K8/18—Clay-containing compositions characterised by the organic compounds
    • C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
    • C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars
    • 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
    • C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
    • C09K8/57—Compositions based on water or polar solvents
    • C09K8/575—Compositions based on water or polar solvents containing organic compounds
    • C09K8/5751—Macromolecular compounds
    • C09K8/5758—Macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
    • 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
    • C09K2208/02—Spotting, i.e. using additives for releasing a stuck drill

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Detergent Compositions (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Lubricants (AREA)
  • Earth Drilling (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Drilling And Boring (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Saccharide Compounds (AREA)

Abstract

В изобретении разработан способ бурения и буровой раствор или жидкость для технического обслуживания скважины в подземной формации, содержащей зоны потери циркуляции или истощенные пласты с низким давлением. Способ снижения плотности промывочной жидкости в скважине, снижения проникновения жидкости в пласты, контактирующие с жидкостью, или снижения потерь циркуляционного потенциала жидкости путем использования в качестве промывочной жидкости водной жидкости, в которой диспергированы полимер, увеличивающий вязкость жидкости при низких скоростях сдвига до такой степени, что индекс разжижения жидкости при сдвиге составляет, по крайней мере, приблизительно 10, поверхностно-активное вещество и афроны, причем афроны предпочтительно образуются за счет турбулентности и падения давления в процессе выхода жидкости из бурового долота в районе пласта, причем вязкость жидкости при низких скоростях сдвига составляет, по крайней мере, 10000 сПз. Кроме того, жидкость содержит смесь олигосахаридов, состоящую из пентозанов и/или гексозанов, включающих от одного до приблизительно 10 соединенных между собой сахаридных звеньев, которые выбирают из группы, включающей арабинозу, маннозу, галактозу, глюкозу, ксилозу, целлобиозу и их смеси. Олигосахаридная смесь предпочтительно представлена водно-растворимой фракцией термически гидролизованной лигноцеллюлозы.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200100180A 1998-07-24 1999-07-12 Способ и раствор для бурения или эксплуатации скважины, способ предотвращения поглощения раствора EA002832B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/121,713 US6123159A (en) 1997-02-13 1998-07-24 Aphron-containing well drilling and servicing fluids of enhanced stability
PCT/US1999/015725 WO2000005323A1 (en) 1998-07-24 1999-07-12 Aphron-containing well drilling and servicing fluids of enhanced stability

Publications (2)

Publication Number Publication Date
EA200100180A1 true EA200100180A1 (ru) 2001-08-27
EA002832B1 EA002832B1 (ru) 2002-10-31

Family

ID=22398365

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200100180A EA002832B1 (ru) 1998-07-24 1999-07-12 Способ и раствор для бурения или эксплуатации скважины, способ предотвращения поглощения раствора

Country Status (14)

Country Link
US (2) US6123159A (ru)
EP (1) EP1114116B1 (ru)
AR (1) AR023316A1 (ru)
AT (1) ATE277142T1 (ru)
AU (1) AU5097399A (ru)
BR (1) BR9912415B1 (ru)
CA (1) CA2338510C (ru)
DE (1) DE69920488D1 (ru)
EA (1) EA002832B1 (ru)
ID (1) ID28130A (ru)
MX (1) MXPA01000840A (ru)
NO (1) NO328671B1 (ru)
OA (1) OA11588A (ru)
WO (1) WO2000005323A1 (ru)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6015535A (en) * 1995-04-06 2000-01-18 Cabot Corporation Process for producing purified cesium compound from cesium alum
US6156708A (en) * 1997-02-13 2000-12-05 Actisystems, Inc. Aphron-containing oil base fluids and method of drilling a well therewith
US5881826A (en) * 1997-02-13 1999-03-16 Actisystems, Inc. Aphron-containing well drilling and servicing fluids
US6258755B1 (en) 1998-12-28 2001-07-10 Venture Innovations, Inc. Chitosan-containing well drilling and servicing fluids
MXPA01008089A (es) * 1999-02-09 2004-09-10 Masi Technologies Llc Perforacion de pozos acuosos que contienen aphron y fluidos de mantenimiento.
RU2258801C2 (ru) 1999-07-22 2005-08-20 Шлюмбергер Текнолоджи Б.В. Компонент и способ, предназначенные для использования со взрывчатыми веществами
US6649571B1 (en) 2000-04-04 2003-11-18 Masi Technologies, L.L.C. Method of generating gas bubbles in oleaginous liquids
MY128297A (en) * 2000-04-19 2007-01-31 Shell Int Research Drilling mud
JP2003159026A (ja) * 2001-11-22 2003-06-03 Ajinomoto Co Inc 安定なアスパルテームスラリーの製造方法及び判定方法
US7148183B2 (en) * 2001-12-14 2006-12-12 Baker Hughes Incorporated Surfactant-polymer composition for substantially solid-free water based drilling, drill-in, and completion fluids
US6926081B2 (en) * 2002-02-25 2005-08-09 Halliburton Energy Services, Inc. Methods of discovering and correcting subterranean formation integrity problems during drilling
US6739414B2 (en) 2002-04-30 2004-05-25 Masi Technologies, L.L.C. Compositions and methods for sealing formations
US7199083B2 (en) * 2002-12-06 2007-04-03 Self Generating Foam Incoporated Self-generating foamed drilling fluids
US7482309B2 (en) 2003-11-24 2009-01-27 Halliburton Energy Services, Inc. Methods of drilling wellbores using variable density fluids comprising coated elastic particles
CA2515060C (en) * 2003-02-03 2009-11-03 Masi Technologies L.L.C. Stabilized colloidal and colloidal-like systems
WO2004069939A2 (en) * 2003-02-03 2004-08-19 Masi Technologies, L.L.C. Stabilized colloidal and colloidal-like systems
US7866394B2 (en) 2003-02-27 2011-01-11 Halliburton Energy Services Inc. Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry
EP1544406A3 (en) 2003-05-06 2007-09-05 MASI Technologies, L.L.C. Colloidal and colloidal-like systems in aqueous, clay-based fluids
US6945329B2 (en) * 2003-05-15 2005-09-20 Halliburton Energy Services, Inc. Methods and compositions for placing particulate materials in subterranean zones
US6994173B2 (en) * 2003-05-19 2006-02-07 Act Technologies, Inc. Method of drilling a borehole
US8541051B2 (en) 2003-08-14 2013-09-24 Halliburton Energy Services, Inc. On-the fly coating of acid-releasing degradable material onto a particulate
US7081437B2 (en) * 2003-08-25 2006-07-25 M-I L.L.C. Environmentally compatible hydrocarbon blend drilling fluid
US7674753B2 (en) 2003-09-17 2010-03-09 Halliburton Energy Services, Inc. Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations
US7833944B2 (en) 2003-09-17 2010-11-16 Halliburton Energy Services, Inc. Methods and compositions using crosslinked aliphatic polyesters in well bore applications
US7829507B2 (en) 2003-09-17 2010-11-09 Halliburton Energy Services Inc. Subterranean treatment fluids comprising a degradable bridging agent and methods of treating subterranean formations
US7398824B1 (en) 2003-09-25 2008-07-15 Bj Services Company Method for inhibiting or controlling inorganic scale formations with copolymers of acrylamide and quaternary ammonium salts
US7159655B2 (en) * 2003-09-25 2007-01-09 Bj Services Company Method for inhibiting or controlling inorganic scale formations
WO2005097937A1 (en) * 2004-04-05 2005-10-20 Masi Technologies, L.L.C. Stabilized colloidal and colloidal-like systems
US8088716B2 (en) 2004-06-17 2012-01-03 Exxonmobil Upstream Research Company Compressible objects having a predetermined internal pressure combined with a drilling fluid to form a variable density drilling mud
US20050284641A1 (en) * 2004-06-24 2005-12-29 Baker Hughes Incorporated Controlled variable density fluid for wellbore operations
US7825073B2 (en) * 2004-07-13 2010-11-02 Halliburton Energy Services, Inc. Treatment fluids comprising clarified xanthan and associated methods
US7727937B2 (en) 2004-07-13 2010-06-01 Halliburton Energy Services, Inc. Acidic treatment fluids comprising xanthan and associated methods
US20060014648A1 (en) * 2004-07-13 2006-01-19 Milson Shane L Brine-based viscosified treatment fluids and associated methods
US7727936B2 (en) * 2004-07-13 2010-06-01 Halliburton Energy Services, Inc. Acidic treatment fluids comprising xanthan and associated methods
US7642223B2 (en) 2004-10-18 2010-01-05 Halliburton Energy Services, Inc. Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone
US7690429B2 (en) * 2004-10-21 2010-04-06 Halliburton Energy Services, Inc. Methods of using a swelling agent in a wellbore
US7648946B2 (en) 2004-11-17 2010-01-19 Halliburton Energy Services, Inc. Methods of degrading filter cakes in subterranean formations
US20080009423A1 (en) 2005-01-31 2008-01-10 Halliburton Energy Services, Inc. Self-degrading fibers and associated methods of use and manufacture
US8598092B2 (en) 2005-02-02 2013-12-03 Halliburton Energy Services, Inc. Methods of preparing degradable materials and methods of use in subterranean formations
US7891424B2 (en) 2005-03-25 2011-02-22 Halliburton Energy Services Inc. Methods of delivering material downhole
US7662753B2 (en) 2005-05-12 2010-02-16 Halliburton Energy Services, Inc. Degradable surfactants and methods for use
US7870903B2 (en) 2005-07-13 2011-01-18 Halliburton Energy Services Inc. Inverse emulsion polymers as lost circulation material
US7713916B2 (en) 2005-09-22 2010-05-11 Halliburton Energy Services, Inc. Orthoester-based surfactants and associated methods
EP2035651A4 (en) 2006-06-07 2009-08-05 Exxonmobil Upstream Res Co METHOD FOR PRODUCING COMPRESSIBLE OBJECTS FOR A VARIABLE DENSITY DRILLING FLUSH
EP2038364A2 (en) 2006-06-07 2009-03-25 ExxonMobil Upstream Research Company Compressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud
EP2041235B1 (en) 2006-06-07 2013-02-13 ExxonMobil Upstream Research Company Compressible objects combined with a drilling fluid to form a variable density drilling mud
US8329621B2 (en) * 2006-07-25 2012-12-11 Halliburton Energy Services, Inc. Degradable particulates and associated methods
EP2444413A1 (en) 2006-08-04 2012-04-25 Verenium Corporation Methods for oil or gas well drilling, washing and/or fracturing
US7686080B2 (en) 2006-11-09 2010-03-30 Halliburton Energy Services, Inc. Acid-generating fluid loss control additives and associated methods
DK2479266T3 (en) 2006-12-21 2016-06-20 Basf Enzymes Llc Amylases and glucoamylases, nucleic acids encoding them, and methods of making and using the same
US8220548B2 (en) 2007-01-12 2012-07-17 Halliburton Energy Services Inc. Surfactant wash treatment fluids and associated methods
US9140707B2 (en) * 2007-08-10 2015-09-22 University Of Louisville Research Foundation, Inc. Sensors and methods for detecting diseases caused by a single point mutation
US20090140444A1 (en) * 2007-11-29 2009-06-04 Total Separation Solutions, Llc Compressed gas system useful for producing light weight drilling fluids
US8006760B2 (en) 2008-04-10 2011-08-30 Halliburton Energy Services, Inc. Clean fluid systems for partial monolayer fracturing
US7906464B2 (en) 2008-05-13 2011-03-15 Halliburton Energy Services, Inc. Compositions and methods for the removal of oil-based filtercakes
US7833943B2 (en) 2008-09-26 2010-11-16 Halliburton Energy Services Inc. Microemulsifiers and methods of making and using same
US7745378B1 (en) 2009-04-30 2010-06-29 Rayborn Sr Jerry Drilling fluid additive containing corn syrup solids
US7972995B2 (en) 2009-04-30 2011-07-05 Rayborn Sr Jerry Drilling fluid additive containing heated syrup solids
USRE47362E1 (en) 2009-04-30 2019-04-23 Mud Masters Acquisition Corporation Drilling fluid additive with low freezing point
US8216981B2 (en) 2009-04-30 2012-07-10 Rayborn Sr Jerry Drilling fluid additive system
US7964537B2 (en) 2009-04-30 2011-06-21 Rayborn Sr Jerry Air drilling misting fluid contains syrups
US7763570B1 (en) 2009-04-30 2010-07-27 Rayborn Sr Jerry Drilling fluid additive containing syrups
US8101555B2 (en) * 2009-04-30 2012-01-24 Rayborn Sr Jerry Spotting fluids containing syrups
US8673825B2 (en) 2009-04-30 2014-03-18 Mudmasters Group, LLC Drilling fluid additive with low freezing point
US8082992B2 (en) 2009-07-13 2011-12-27 Halliburton Energy Services, Inc. Methods of fluid-controlled geometry stimulation
WO2011066024A1 (en) 2009-11-30 2011-06-03 Exxonmobil Upstream Research Company Systems and methods for forming high performance compressible objects
CN103547653A (zh) * 2011-04-01 2014-01-29 索拉兹米公司 基于生物质的油田化学品
US20140262529A1 (en) * 2013-03-15 2014-09-18 Baker Hughes Incorporated Encapsulated gas for drilling and completion fluids
AU2013403405B2 (en) * 2013-10-23 2016-12-15 Halliburton Energy Services, Inc. Volatile surfactant treatment for subterranean formations
US10240078B2 (en) 2013-10-23 2019-03-26 Halliburton Energy Services, Inc. Volatile surfactant treatment for use in subterranean formation operations
GB2532529B (en) * 2014-11-18 2019-07-10 Mi Llc Wellbore fluid containing granular hemicellulose material
MX2017012103A (es) 2015-03-24 2018-11-12 Terravia Holdings Inc Composiciones de microalgas y sus usos.
RU2635405C1 (ru) * 2016-06-28 2017-11-13 Общество с ограниченной ответственностью "ЛУКОЙЛ-Инжиниринг" (ООО "ЛУКОЙЛ-Инжиниринг") Способ приготовления бурового раствора на углеводородной основе для бурения скважин с аномально низким пластовым давлением
JP2019040649A (ja) 2017-08-23 2019-03-14 株式会社東芝 ディスク装置
WO2023101801A1 (en) * 2021-12-01 2023-06-08 Rockwater Energy Solutions, Llc Compositions of aphron sealing lost circulation spacer

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2713029A (en) * 1952-05-07 1955-07-12 Masonite Corp Drilling mud addition agent
US2818230A (en) * 1954-02-08 1957-12-31 Shell Dev Method of correcting for lost circulation of drilling fluids
US4486333A (en) * 1981-04-10 1984-12-04 Felix Sebba Preparation of biliquid foam compositions
GB8622032D0 (en) * 1986-09-12 1986-10-22 Shell Int Research Aqueous polysaccharide compositions
US5514644A (en) * 1993-12-14 1996-05-07 Texas United Chemical Corporation Polysaccharide containing fluids having enhanced thermal stability
US5513712A (en) * 1994-11-08 1996-05-07 Marathon Oil Company Polymer enhanced foam drilling fluid
US5616541A (en) * 1995-02-10 1997-04-01 Texas United Chemical Company, Llc. Low solids, high density fluids for well drilling
US5728652A (en) * 1995-02-10 1998-03-17 Texas United Chemical Company, Llc. Brine fluids having improved rheological charactersitics
US5716910A (en) * 1995-09-08 1998-02-10 Halliburton Company Foamable drilling fluid and methods of use in well drilling operations
US5682951A (en) * 1995-12-07 1997-11-04 Marathon Oil Company Foamed gel completion, workover, and kill fluid
US5881826A (en) * 1997-02-13 1999-03-16 Actisystems, Inc. Aphron-containing well drilling and servicing fluids
US5916849A (en) * 1998-07-24 1999-06-29 Venture Innovations, Inc. Polysaccharide-containing well drilling and servicing fluids

Also Published As

Publication number Publication date
EP1114116A4 (en) 2001-10-04
DE69920488D1 (de) 2004-10-28
OA11588A (en) 2004-07-30
WO2000005323A1 (en) 2000-02-03
US6123159A (en) 2000-09-26
NO20010385D0 (no) 2001-01-23
BR9912415B1 (pt) 2009-01-13
CA2338510A1 (en) 2000-02-03
EA002832B1 (ru) 2002-10-31
CA2338510C (en) 2003-04-08
EP1114116A1 (en) 2001-07-11
ATE277142T1 (de) 2004-10-15
EP1114116B1 (en) 2004-09-22
NO20010385L (no) 2001-03-20
ID28130A (id) 2001-05-03
MXPA01000840A (es) 2002-06-04
BR9912415A (pt) 2001-04-17
NO328671B1 (no) 2010-04-19
US6422326B1 (en) 2002-07-23
AU5097399A (en) 2000-02-14
AR023316A1 (es) 2002-09-04

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