NO170950C - Fremgangsmaate til forbedring av oljeutvinning, broennboring -restaurering og -komplettering for utvinning av naturrikdommer og vaeske inneholdende opploest polymer for bruk i fremgangsmaaten - Google Patents

Fremgangsmaate til forbedring av oljeutvinning, broennboring -restaurering og -komplettering for utvinning av naturrikdommer og vaeske inneholdende opploest polymer for bruk i fremgangsmaaten

Info

Publication number
NO170950C
NO170950C NO840322A NO840322A NO170950C NO 170950 C NO170950 C NO 170950C NO 840322 A NO840322 A NO 840322A NO 840322 A NO840322 A NO 840322A NO 170950 C NO170950 C NO 170950C
Authority
NO
Norway
Prior art keywords
procedure
extraction
polymes
complementation
restoration
Prior art date
Application number
NO840322A
Other languages
English (en)
Norwegian (no)
Other versions
NO840322L (no
NO170950B (no
Inventor
Glenn Allan Stahl
Henry Lien Hsieh
Ira John Westerman
Ahmad Moradi-Araghi
Original Assignee
Phillips Petroleum Co
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 US06/461,707 external-priority patent/US4644020A/en
Application filed by Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of NO840322L publication Critical patent/NO840322L/no
Publication of NO170950B publication Critical patent/NO170950B/no
Publication of NO170950C publication Critical patent/NO170950C/no

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
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F226/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen
    • C08F226/06—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen by a heterocyclic ring containing nitrogen
    • 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
    • C09K8/22—Synthetic organic compounds
    • C09K8/24—Polymers
    • 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
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
    • 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
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • 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
    • Y10S507/935—Enhanced oil recovery

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mining & Mineral Resources (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Lubricants (AREA)
  • Fats And Perfumes (AREA)
  • Polyamides (AREA)
NO840322A 1983-01-28 1984-01-27 Fremgangsmaate til forbedring av oljeutvinning, broennboring -restaurering og -komplettering for utvinning av naturrikdommer og vaeske inneholdende opploest polymer for bruk i fremgangsmaaten NO170950C (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/461,707 US4644020A (en) 1983-01-28 1983-01-28 Production of high molecular weight vinyl lactam polymers and copolymers
US06/568,363 US4951921A (en) 1983-01-28 1984-01-09 Polymers useful in the recovery and processing of natural resources

Publications (3)

Publication Number Publication Date
NO840322L NO840322L (no) 1984-07-30
NO170950B NO170950B (no) 1992-09-21
NO170950C true NO170950C (no) 1992-12-30

Family

ID=27040102

Family Applications (1)

Application Number Title Priority Date Filing Date
NO840322A NO170950C (no) 1983-01-28 1984-01-27 Fremgangsmaate til forbedring av oljeutvinning, broennboring -restaurering og -komplettering for utvinning av naturrikdommer og vaeske inneholdende opploest polymer for bruk i fremgangsmaaten

Country Status (17)

Country Link
US (1) US4951921A (hu)
EP (1) EP0115836B1 (hu)
AR (1) AR241608A1 (hu)
AU (1) AU553817B2 (hu)
CA (1) CA1254026A (hu)
DE (1) DE3486230T2 (hu)
DK (1) DK172018B1 (hu)
ES (2) ES8702927A1 (hu)
FI (1) FI840341A (hu)
HU (1) HUT35700A (hu)
MX (1) MX163467B (hu)
MY (1) MY101206A (hu)
NO (1) NO170950C (hu)
PL (1) PL245928A1 (hu)
PT (1) PT78028B (hu)
TR (1) TR22394A (hu)
YU (1) YU13984A (hu)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5080809A (en) 1983-01-28 1992-01-14 Phillips Petroleum Company Polymers useful in the recovery and processing of natural resources
US5326854A (en) * 1983-01-28 1994-07-05 Phillips Petroleum Company Flocculation process using lactam or vinyl sulfonate polymer
US4573533A (en) * 1984-06-21 1986-03-04 American Cyanamid Company Method for using thermally stable mobility control agents for harsh environmental reservoirs
US4822842A (en) * 1987-02-03 1989-04-18 Phillips Petroleum Company Delaying the gelation of water soluble polymers
US4959163A (en) * 1988-11-03 1990-09-25 Halliburton Company Polyampholytes-high temperature polymers and method of use
US5380705A (en) * 1990-01-25 1995-01-10 Phillips Petroleum Company Drilling mud comprising tetrapolymer consisting of n-vinyl-2-pyrrolidone, acrylamidopropanesulfonicacid, acrylamide, and acrylic acid
US5048607A (en) * 1990-08-10 1991-09-17 Mobil Oil Corporation In-situ emulsion polymerization of ethylene derivatives
US5012869A (en) * 1990-10-03 1991-05-07 Conoco Inc. Method for restricting gas influx during well cementing
US5204320A (en) * 1991-11-07 1993-04-20 Phillips Petroleum Company Drilling mud additive comprising ferrous sulfate and poly(N-vinyl-2-pyrrolidone/sodium 2-acrylamido-2-methylpropane sulfonate)
EP0577931B1 (de) * 1992-04-10 1998-06-24 Clariant GmbH Verfahren zur Verringerung oder vollständigen Einstellung des Wasserzuflusses bei Bohrungen zur Gewinnung von Öl und/oder Kohlenwasserstoffgas
US5432292A (en) * 1992-11-20 1995-07-11 Colorado School Of Mines Method for controlling clathrate hydrates in fluid systems
US5639925A (en) * 1992-11-20 1997-06-17 Colorado School Of Mines Additives and method for controlling clathrate hydrates in fluid systems
US5559263A (en) * 1994-11-16 1996-09-24 Tiorco, Inc. Aluminum citrate preparations and methods
US5960877A (en) * 1997-05-07 1999-10-05 Halliburton Energy Services, Inc. Polymeric compositions and methods for use in well applications
US6085840A (en) * 1997-11-05 2000-07-11 Fritz Industries, Inc. Method for control of liquid loss and gas migration in well cementing
US6089318A (en) * 1997-11-05 2000-07-18 Fritz Industries, Inc. Method for control of fluid loss and gas migration in well cementing
US5988279A (en) * 1997-11-05 1999-11-23 Fritz Industries, Inc. Method for control of fluid loss and gas migration in well cementing
DE19840268A1 (de) * 1998-09-03 2000-03-09 Basf Ag Verfahren zur Herstellung von Copolymerisaten durch radikalische Polymerisation
US6124383A (en) * 1998-12-23 2000-09-26 Phillips Petroleum Company Cement composition and process therewith
US6184287B1 (en) * 1999-01-26 2001-02-06 Omnova Solutions Inc. Polymeric latexes prepared in the presence of 2-acrylamido-2-methylpropanesulfonate
EP1132354A1 (en) * 2000-03-09 2001-09-12 Sofitech N.V. Multifunctional additive to cement slurries
WO2002011874A1 (en) * 2000-08-07 2002-02-14 Sofitech N.V. Viscoelastic wellbore treatment fluid
US7578968B1 (en) 2002-05-03 2009-08-25 Albemarle Corporation Microbiological control in oil or gas field operations
US20040120853A1 (en) * 2002-12-20 2004-06-24 Carpenter Joel F. Biocidal control in recovery of oil by water injection
US7220708B2 (en) * 2003-02-27 2007-05-22 Halliburton Energy Services, Inc. Drilling fluid component
US7104327B2 (en) * 2003-08-19 2006-09-12 Halliburton Engery Services, Inc. Methods of fracturing high temperature subterranean zones and foamed fracturing fluids therefor
US7943555B2 (en) 2005-04-19 2011-05-17 Halliburton Energy Services Inc. Wellbore treatment kits for forming a polymeric precipitate to reduce the loss of fluid to a subterranean formation
US7905287B2 (en) * 2005-04-19 2011-03-15 Halliburton Energy Services Inc. Methods of using a polymeric precipitate to reduce the loss of fluid to a subterranean formation
US7833945B2 (en) 2005-07-15 2010-11-16 Halliburton Energy Services Inc. Treatment fluids with improved shale inhibition and methods of use in subterranean operations
US8455404B2 (en) * 2005-07-15 2013-06-04 Halliburton Energy Services, Inc. Treatment fluids with improved shale inhibition and methods of use in subterranean operations
US9303203B2 (en) * 2006-06-06 2016-04-05 Schlumberger Technology Corporation Thermoviscoelastic system fluid and well treatment method
US9475974B2 (en) 2007-07-17 2016-10-25 Schlumberger Technology Corporation Controlling the stability of water in water emulsions
US9574128B2 (en) * 2007-07-17 2017-02-21 Schlumberger Technology Corporation Polymer delivery in well treatment applications
BRPI0919234B1 (pt) * 2008-09-17 2019-06-04 Schlumberger Norge As Géis de polímero como melhoradores de fluxo em sistemas de injeção de água
US8939211B2 (en) * 2009-01-08 2015-01-27 Bp Corporation North America Inc. Hydrocarbon recovery process
US8175751B2 (en) * 2009-05-27 2012-05-08 Chevron U.S.A. Inc. Computer-implemented systems and methods for screening and predicting the performance of enhanced oil recovery and improved oil recovery methods
US7956016B2 (en) 2009-08-31 2011-06-07 Schlumberger Technology Corporation Methods to control fluid loss in a well bore
MX2012010040A (es) * 2010-03-10 2012-09-21 Basf Se Uso de mezclas de agentes tensoactivos policarboxilato para barrido por inyeccion de micro emulsiones.
US8607869B2 (en) * 2011-05-20 2013-12-17 Global Environmental Solutions, Inc. Linear pressure reducer for regulating injection pressure in an enhanced oil recovery system
WO2013078317A1 (en) * 2011-11-21 2013-05-30 Schlumberger Technology Corporation Interface for controlling and improving drilling operations
FR2986034B1 (fr) 2012-01-20 2016-08-12 Snf Sas Procede de recuperation assistee de petrole par injection d'une solution polymerique
FR2986033B1 (fr) * 2012-01-20 2016-08-05 Snf Sas Procede de recuperation assistee de petrole par injection d'une solution polymerique
CA2779190A1 (en) * 2012-06-04 2013-12-04 Diversity Technologies Corporation Drilling fluids useful for limiting tar sand accretion
US10883037B2 (en) * 2013-06-26 2021-01-05 Halliburton Energy Services, Inc. Crosslinked n-vinylpyrrolidone polymers for use in subterranean formations and wells
US9890625B2 (en) * 2014-02-28 2018-02-13 Eclipse Ior Services, Llc Systems and methods for the treatment of oil and/or gas wells with an obstruction material
US9890624B2 (en) * 2014-02-28 2018-02-13 Eclipse Ior Services, Llc Systems and methods for the treatment of oil and/or gas wells with a polymeric material
WO2020161171A1 (en) * 2019-02-08 2020-08-13 Tougas Oilfield Solutions Gmbh Manufacturing method for inverse emulsion polymer
EA202192480A1 (ru) 2019-04-09 2022-02-15 ШЕВРОН ФИЛЛИПС КЕМИКАЛ КОМПАНИ ЭлПи Способы бурения стволов скважины с помощью композиций разжижителя

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757770A (en) * 1953-08-22 1956-09-26 Basf Ag Improvements in the production of water-soluble polymers
US3025234A (en) * 1957-09-03 1962-03-13 Phillips Petroleum Co Well drilling fluid and process
US3148729A (en) * 1959-07-01 1964-09-15 Sinclair Research Inc Method of combatting the obstruction of gas circulation in gas drilling
US3179171A (en) * 1960-11-10 1965-04-20 Dow Chemical Co Inhibition of swelling of silicate-containing formations employing an oxazolidinone polymer
US3277066A (en) * 1963-10-23 1966-10-04 Gen Aniline & Film Corp Methods of polymerizing n-vinyl lactams with a metal oxide or hydroxide and water catalyst
US3405106A (en) * 1964-06-29 1968-10-08 American Cyanamid Co Polymerization of water soluble vinyl monomers in presence of metal salts
US3336270A (en) * 1964-07-20 1967-08-15 Hercules Inc Preparation of acrylamide-type water-soluble polymers
US3434971A (en) * 1965-08-25 1969-03-25 Dow Chemical Co Composition and method for acidizing wells
US3412020A (en) * 1966-08-08 1968-11-19 Gaf Corp Method for flocculating suspended inorganic solids
FR1489341A (fr) * 1966-08-09 1967-07-21 Dow Chemical Co Compositions et procédé pour le traitement de puits de forage
US3500925A (en) * 1967-06-06 1970-03-17 Gaf Corp Water-flooding process for secondary oil recovery with polymeric n-vinyl lactam and metal salt to control clay swelling
US3537520A (en) * 1968-08-21 1970-11-03 Union Oil Co Flooding process for the recovery of oil
US3630868A (en) * 1969-04-23 1971-12-28 Grace W R & Co Process for accelerating the radiation induced polymerization of n-vinylpyrrolidone
DE2141060C3 (de) * 1971-08-17 1980-06-19 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Losungen, die Copolymerisate aus 10 bis 99 Gew.-% N-Vinylpyrrolidon und 1 bis 90 Gew.-% Acrylsäuremethylester und/oder Acrylnitril enthalten
US3803104A (en) * 1971-12-23 1974-04-09 Gaf Corp High molecular weight and low viscosity vinylpyrrolidone polymer flocculants and catalyst and process producing the same
US3948783A (en) * 1974-04-30 1976-04-06 Calgon Corporation Process for the secondary and tertiary recovery of petroleum
US3994852A (en) * 1974-09-23 1976-11-30 Calgon Corporation Low fluid loss cementing compositions containing polyvinylpyrrolidone-polyacrylamide triblock polymers and their use
US4190718A (en) * 1975-05-27 1980-02-26 Gaf Corporation Process for increasing molecular weight of vinylpyrrolidone polymer
US4207946A (en) * 1978-07-17 1980-06-17 Texaco Inc. Tertiary recovery process
US4471097A (en) * 1982-01-11 1984-09-11 Klaus Uhl Water soluble copolymers containing vinyl imidazole as drilling fluid additives

Also Published As

Publication number Publication date
EP0115836A2 (en) 1984-08-15
EP0115836A3 (en) 1985-01-09
YU13984A (en) 1986-12-31
ES544294A0 (es) 1986-10-16
AU2372384A (en) 1984-08-02
DE3486230D1 (de) 1993-11-25
HUT35700A (en) 1985-07-29
AU553817B2 (en) 1986-07-31
DE3486230T2 (de) 1994-02-17
NO840322L (no) 1984-07-30
PT78028A (en) 1984-02-01
MY101206A (en) 1991-08-17
DK39684D0 (da) 1984-01-27
DK172018B1 (da) 1997-09-15
ES529231A0 (es) 1987-01-16
NO170950B (no) 1992-09-21
ES8700721A1 (es) 1986-10-16
FI840341A (fi) 1984-07-29
EP0115836B1 (en) 1993-10-20
FI840341A0 (fi) 1984-01-27
DK39684A (da) 1984-07-29
US4951921A (en) 1990-08-28
TR22394A (tr) 1987-03-23
AR241608A1 (es) 1992-09-30
ES8702927A1 (es) 1987-01-16
CA1254026A (en) 1989-05-16
MX163467B (es) 1992-05-18
PT78028B (en) 1986-06-05
PL245928A1 (en) 1985-08-13

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