NO303626B1 - FremgangsmÕte og vandig oppl°sning for inhibering av avleiringsdannelse - Google Patents

FremgangsmÕte og vandig oppl°sning for inhibering av avleiringsdannelse Download PDF

Info

Publication number: NO303626B1
Authority: NO; Norway
Prior art keywords: range; phosphonate; aqueous solution; scale; present
Prior art date: 1990-10-04

Application number

NO913861A

Other languages

English (en)

Norwegian (no)

Other versions

NO913861D0 (no

NO913861L (no

Inventor

Nevin John Stewart

Patrica Alexandra Mary Walker

Original Assignee

Britoil Plc

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.)

1990-10-04

Filing date

1991-10-02

Publication date

1998-08-10

1990-10-04 Priority claimed from GB909021616A external-priority patent/GB9021616D0/en

1991-01-15 Priority claimed from GB919100786A external-priority patent/GB9100786D0/en

1991-06-20 Priority claimed from GB919113314A external-priority patent/GB9113314D0/en

1991-10-02 Application filed by Britoil Plc filed Critical Britoil Plc

1991-10-02 Publication of NO913861D0 publication Critical patent/NO913861D0/no

1992-04-06 Publication of NO913861L publication Critical patent/NO913861L/no

1998-08-10 Publication of NO303626B1 publication Critical patent/NO303626B1/no

Links

238000000034 method Methods 0.000 title claims abstract description 32
239000007864 aqueous solution Substances 0.000 title claims abstract description 21
230000015572 biosynthetic process Effects 0.000 title claims abstract description 16
230000008021 deposition Effects 0.000 title 1
UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims abstract description 22
229910052788 barium Inorganic materials 0.000 claims abstract description 13
DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims abstract description 13
239000012530 fluid Substances 0.000 claims abstract description 9
230000002401 inhibitory effect Effects 0.000 claims abstract description 9
238000004519 manufacturing process Methods 0.000 claims abstract description 9
229910052783 alkali metal Inorganic materials 0.000 claims abstract description 7
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims abstract description 5
150000001340 alkali metals Chemical class 0.000 claims abstract description 5
150000003839 salts Chemical class 0.000 claims abstract description 3
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
229910052739 hydrogen Inorganic materials 0.000 claims description 4
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
239000012736 aqueous medium Substances 0.000 claims description 2
239000000470 constituent Substances 0.000 claims description 2
239000001257 hydrogen Substances 0.000 claims description 2
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
229910052708 sodium Inorganic materials 0.000 claims 1
239000011734 sodium Substances 0.000 claims 1
ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 abstract description 3
239000003643 water by type Substances 0.000 abstract 1
239000002455 scale inhibitor Substances 0.000 description 22
150000001875 compounds Chemical class 0.000 description 16
239000008398 formation water Substances 0.000 description 14
239000003112 inhibitor Substances 0.000 description 13
239000013535 sea water Substances 0.000 description 13
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
239000000203 mixture Substances 0.000 description 11
NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
239000000243 solution Substances 0.000 description 8
238000002347 injection Methods 0.000 description 7
239000007924 injection Substances 0.000 description 7
TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
229910000147 aluminium phosphate Inorganic materials 0.000 description 5
239000011541 reaction mixture Substances 0.000 description 5
238000012360 testing method Methods 0.000 description 5
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
-1 amine phosphonates Chemical class 0.000 description 4
238000001816 cooling Methods 0.000 description 4
235000017281 sodium acetate Nutrition 0.000 description 4
XFNJVJPLKCPIBV-UHFFFAOYSA-N trimethylenediamine Chemical compound NCCCN XFNJVJPLKCPIBV-UHFFFAOYSA-N 0.000 description 4
BDKLKNJTMLIAFE-UHFFFAOYSA-N 2-(3-fluorophenyl)-1,3-oxazole-4-carbaldehyde Chemical compound FC1=CC=CC(C=2OC=C(C=O)N=2)=C1 BDKLKNJTMLIAFE-UHFFFAOYSA-N 0.000 description 3
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
229910052791 calcium Inorganic materials 0.000 description 3
239000011575 calcium Substances 0.000 description 3
239000000843 powder Substances 0.000 description 3
238000002360 preparation method Methods 0.000 description 3
239000000047 product Substances 0.000 description 3
229940087562 sodium acetate trihydrate Drugs 0.000 description 3
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
150000003863 ammonium salts Chemical class 0.000 description 2
239000007853 buffer solution Substances 0.000 description 2
239000012153 distilled water Substances 0.000 description 2
239000000706 filtrate Substances 0.000 description 2
239000008098 formaldehyde solution Substances 0.000 description 2
239000007788 liquid Substances 0.000 description 2
239000012299 nitrogen atmosphere Substances 0.000 description 2
239000011435 rock Substances 0.000 description 2
159000000000 sodium salts Chemical class 0.000 description 2
230000003068 static effect Effects 0.000 description 2
229910052712 strontium Inorganic materials 0.000 description 2
CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 description 1
YMDZDFSUDFLGMX-UHFFFAOYSA-N 2-chloro-n-(2-chloroethyl)ethanamine;hydron;chloride Chemical compound [Cl-].ClCC[NH2+]CCCl YMDZDFSUDFLGMX-UHFFFAOYSA-N 0.000 description 1
BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 1
VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
KIDJHPQACZGFTI-UHFFFAOYSA-N [6-[bis(phosphonomethyl)amino]hexyl-(phosphonomethyl)amino]methylphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCCCCCN(CP(O)(O)=O)CP(O)(O)=O KIDJHPQACZGFTI-UHFFFAOYSA-N 0.000 description 1
239000002253 acid Substances 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
229940118888 barium cation Drugs 0.000 description 1
XDFCIPNJCBUZJN-UHFFFAOYSA-N barium(2+) Chemical compound [Ba+2] XDFCIPNJCBUZJN-UHFFFAOYSA-N 0.000 description 1
239000012620 biological material Substances 0.000 description 1
239000012267 brine Substances 0.000 description 1
229910000019 calcium carbonate Inorganic materials 0.000 description 1
150000001768 cations Chemical class 0.000 description 1
239000002738 chelating agent Substances 0.000 description 1
238000007796 conventional method Methods 0.000 description 1
239000013078 crystal Substances 0.000 description 1
230000009977 dual effect Effects 0.000 description 1
229930195733 hydrocarbon Natural products 0.000 description 1
150000002430 hydrocarbons Chemical class 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
238000002156 mixing Methods 0.000 description 1
MLEFOTHMNWIYGG-UHFFFAOYSA-N n'-[2-[2-(3-aminopropylamino)ethylamino]ethyl]propane-1,3-diamine Chemical compound NCCCNCCNCCNCCCN MLEFOTHMNWIYGG-UHFFFAOYSA-N 0.000 description 1
239000002245 particle Substances 0.000 description 1
229920000058 polyacrylate Polymers 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
239000011148 porous material Substances 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
230000001376 precipitating effect Effects 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
239000012264 purified product Substances 0.000 description 1
238000011084 recovery Methods 0.000 description 1
238000010992 reflux Methods 0.000 description 1
239000012266 salt solution Substances 0.000 description 1
238000005070 sampling Methods 0.000 description 1
238000000926 separation method Methods 0.000 description 1
239000002002 slurry Substances 0.000 description 1
239000001632 sodium acetate Substances 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
239000007787 solid Substances 0.000 description 1
238000010561 standard procedure Methods 0.000 description 1
239000012086 standard solution Substances 0.000 description 1
238000003756 stirring Methods 0.000 description 1
UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical class [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 1
239000000126 substance Substances 0.000 description 1
239000000725 suspension Substances 0.000 description 1

Classifications

- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- 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
- Y10S507/927—Well cleaning fluid

Landscapes

Chemical & Material Sciences (AREA)
Environmental & Geological Engineering (AREA)
General Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Hydrology & Water Resources (AREA)
Engineering & Computer Science (AREA)
Chemical Kinetics & Catalysis (AREA)
Water Supply & Treatment (AREA)
Organic Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Soil Working Implements (AREA)
Flanged Joints, Insulating Joints, And Other Joints (AREA)
Preventing Corrosion Or Incrustation Of Metals (AREA)

NO913861A 1990-10-04 1991-10-02 FremgangsmÕte og vandig oppl°sning for inhibering av avleiringsdannelse NO303626B1 (no)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
GB909021616A GB9021616D0 (en)	1990-10-04	1990-10-04	Method for inhibiting scale formation
GB919100786A GB9100786D0 (en)	1991-01-15	1991-01-15	Method for inhibiting scale formation
GB919113314A GB9113314D0 (en)	1991-06-20	1991-06-20	Method for inhibiting scale formation

Publications (3)

Publication Number	Publication Date
NO913861D0 NO913861D0 (no)	1991-10-02
NO913861L NO913861L (no)	1992-04-06
NO303626B1 true NO303626B1 (no)	1998-08-10

Family

ID=27265302

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO913861A NO303626B1 (no)	1990-10-04	1991-10-02	FremgangsmÕte og vandig oppl°sning for inhibering av avleiringsdannelse

Country Status (6)

Country	Link
US (2)	US5261491A (de)
EP (1)	EP0479462B1 (de)
AT (1)	ATE129989T1 (de)
CA (1)	CA2052732C (de)
DE (1)	DE69114436T2 (de)
NO (1)	NO303626B1 (de)

Families Citing this family (25)

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ATE129989T1 (de) *	1990-10-04	1995-11-15	Britoil Plc	Verfahren zur bekämpfung der kesselsteinbildung.
EP0629585A1 (de) *	1993-06-14	1994-12-21	Monsanto Europe S.A./N.V.	Verfahren zur Verhinderung von Oxalatablagerungen
ES2163427T3 (es) *	1993-06-14	2002-02-01	Solutia Europ Nv Sa	Procedimiento para inhibir la formacion de depositos de oxalato.
GB9501021D0 (en)	1995-01-19	1995-03-08	Bp Chem Int Ltd	Oil and gas field chemicals
US5655601A (en) *	1995-10-05	1997-08-12	Gas Research Institute	Method for scale inhibitor squeeze application to gas and oil wells
GB9700532D0 (en)	1997-01-13	1997-03-05	Bp Chem Int Ltd	Oil and gas field chemical
JP4242272B2 (ja) *	2001-06-06	2009-03-25	サーモフオス・トレーデイング・ゲー・エム・ベー・ハー	改良パルプの製造法およびその水性組成物
MY138251A (en) *	2001-06-06	2009-05-29	Thermphos Trading Gmbh	Method for inhibiting calcium salt scale
MY129053A (en) *	2001-06-06	2007-03-30	Thermphos Trading Gmbh	Composition for inhibiting calcium salt scale
EP1281676A1 (de) *	2001-08-01	2003-02-05	NV Solutia Europe S.A.	Feste freiflissende Phosphat-Zusammensetzung und ihre Benützung
GB0213599D0 (en)	2002-06-13	2002-07-24	Bp Exploration Operating	Process
ITMI20021706A1 (it) *	2002-07-31	2004-02-01	Bozzetto Giovanni Spa	Poliamminomeilenfosfono derivati.
US7021378B2 (en)	2003-12-31	2006-04-04	Chevron U.S.A.	Method for enhancing the retention efficiency of treatment chemicals in subterranean formations
IL173706A (en) *	2006-02-13	2013-09-30	Bromine Compounds Ltd	Antimony-based corrosion inhibitors for high-concentration saline solution and a method of inhibiting corrosion by using them
US8007689B2 (en) *	2006-02-13	2011-08-30	Bromine Compounds Ltd.	Liquid composition suitable for use as a corrosion inhibitor and a method for its preparation
EP1887011A1 (de) *	2006-08-09	2008-02-13	Thermphos Trading GmbH	Alpha-Aminosäurephosphonsäure-Verbindungen, Verfahren zur Herstellung und Verwendung
EP1886976A1 (de)	2006-08-09	2008-02-13	Thermphos Trading GmbH	Methode zur Verhinderung der Ablagerungen
US8183184B2 (en)	2006-09-05	2012-05-22	University Of Kansas	Polyelectrolyte complexes for oil and gas applications
US20080210428A1 (en) *	2007-03-01	2008-09-04	Bj Services Company	Method of removing filter cake
US7837931B2 (en) *	2007-05-04	2010-11-23	Bj Services Company Llc	Method of using solubilized transition metal oxides in well operations
US8276664B2 (en) *	2007-08-13	2012-10-02	Baker Hughes Incorporated	Well treatment operations using spherical cellulosic particulates
EP2597126B1 (de) *	2007-10-15	2015-05-27	M-i Swaco Norge As	Verfahren zum Hemmen einer Salzausfällung aus wässrigen Strömungen
CA2643872C (en) *	2007-11-16	2012-08-21	Bj Services Company	Method of treating subterranean formations by in-situ hydrolysis of organic acid esters
GB201820465D0 (en)	2018-12-14	2019-01-30	Bp Exploration Operating Co Ltd	Layered double hydroxide materials as additives for enhancing scale squeeze chemical treatment lifetime
US11584878B1 (en) *	2021-12-16	2023-02-21	Halliburton Energy Services, Inc.	Acid precursors for enhanced inhibitor placement in scale squeeze treatments

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US3434969A (en) *	1967-08-11	1969-03-25	Calgon Corp	Scale inhibiting
US3393150A (en) *	1967-08-11	1968-07-16	Calgon Corp	Methods of scale inhibition
US3483133A (en) *	1967-08-25	1969-12-09	Calgon C0Rp	Method of inhibiting corrosion with aminomethylphosphonic acid compositions
US3483925A (en) *	1968-02-06	1969-12-16	Calgon C0Rp	Squeeze treatment of producing oil wells
GB1230172A (de) *	1968-02-28	1971-04-28
DE1917686A1 (de) *	1969-04-05	1970-10-08	Benckiser Knapsack Gmbh	Verfahren zur Behandlung von Wasserbaedern
US3699048A (en) *	1969-07-24	1972-10-17	Benckiser Gmbh Joh A	Process of preventing scale and deposit formation in aqueous systems and product
US3833517A (en) *	1971-03-12	1974-09-03	Benckiser Knapsack Gmbh	Agent for the treatment of cellulosic fiber materials and process
US3738937A (en) *	1970-05-08	1973-06-12	Textilana Corp	Polyalkylene polyamino polykis methylene phosphonic acids and salts thereof and methods for producing same
US3619427A (en) *	1970-06-22	1971-11-09	Textilana Corp	Methods of scale inhibition using polyalkylene polyamino polykis methylene phosphonic acids and their salts
US3663448A (en) *	1970-09-25	1972-05-16	Calgon Corp	Inhibiting scale deposition
DE2057008C3 (de) *	1970-11-20	1979-05-10	Benckiser Gmbh Joh A	Mittel zur Verhinderung von steinbildenden Ablagerungen in wäßrigen Systemen
GB1392044A (en) *	1971-06-26	1975-04-23	Ciba Geigy Ag	Corrosion inhibiting composition
US4051110A (en) *	1971-07-06	1977-09-27	Petrolite Corporation	Methylene phosphonates of polymerized polyalkylenepolyamines
US3816333A (en) *	1971-07-07	1974-06-11	Monsanto Co	Methods of inhibiting corrosion with condensed polyalkylenepolyamine derivatives
US3958635A (en) *	1975-09-26	1976-05-25	Union Oil Company Of California	Method of inhibiting scale for high temperature steam wells
AU503766B2 (en) *	1977-04-21	1979-09-20	Calgon Corporation	Gas scrubber scale and deposit control
PT71647B (en) *	1979-08-16	1982-01-21	Calgon Corp	Process for preparing a composition for the control of scale and deposits in gas-liquid separation
US4357248A (en) *	1980-05-16	1982-11-02	Shell Oil Company	Treating wells with self-precipitating scale inhibitor
US4551262A (en) *	1983-10-05	1985-11-05	Samakaev Rafail K	Composition for preventing deposition of inorganic salts
GB8504489D0 (en) *	1985-02-21	1985-03-27	Monsanto Europe Sa	Aminomethylenephosphonate compositions
GB8518300D0 (en)	1985-07-19	1985-08-29	Amersham Int Plc	Contrast agent
US4741400A (en) *	1986-08-07	1988-05-03	Atlantic Richfield Company	Method for scale inhibition in a well penetrating a subterranean formation
US4872996A (en) *	1987-03-13	1989-10-10	The Dow Chemical Company	Use of aminophosphonic acids to inhibit scale formation and corrosion caused by manganese in water systems
US4931189A (en) *	1988-11-02	1990-06-05	Petrolite Corporation	Methods for inhibition of scale in high brine environments
US5057228A (en) *	1990-04-16	1991-10-15	Baker Hughes Incorporated	Metal ion complexes for use as scale inhibitors
US5089150A (en) *	1990-05-29	1992-02-18	Mobil Oil Corporation	Method of increasing retention of scale inhibitors in subterranean formations
US5068042A (en) *	1990-07-26	1991-11-26	Mobil Oil Corporation	Dissolution of sulfate scales
ATE129989T1 (de) *	1990-10-04	1995-11-15	Britoil Plc	Verfahren zur bekämpfung der kesselsteinbildung.
US5352365A (en) *	1993-02-22	1994-10-04	Fuller Richard L	Process for removing scale, and reducing scale formation in sewage treatment plants

1991
- 1991-09-23 AT AT91308627T patent/ATE129989T1/de not_active IP Right Cessation
- 1991-09-23 DE DE69114436T patent/DE69114436T2/de not_active Expired - Fee Related
- 1991-09-23 EP EP91308627A patent/EP0479462B1/de not_active Expired - Lifetime
- 1991-10-02 NO NO913861A patent/NO303626B1/no unknown
- 1991-10-03 US US07/770,691 patent/US5261491A/en not_active Expired - Lifetime
- 1991-10-03 CA CA002052732A patent/CA2052732C/en not_active Expired - Fee Related
1993
- 1993-09-15 US US08/121,815 patent/US6527983B1/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
NO913861D0 (no)	1991-10-02
CA2052732C (en)	2003-07-15
DE69114436D1 (de)	1995-12-14
EP0479462B1 (de)	1995-11-08
DE69114436T2 (de)	1996-06-20
CA2052732A1 (en)	1992-04-05
US5261491A (en)	1993-11-16
ATE129989T1 (de)	1995-11-15
EP0479462A1 (de)	1992-04-08
US6527983B1 (en)	2003-03-04
NO913861L (no)	1992-04-06

Publication	Publication Date	Title
NO303626B1 (no)	1998-08-10	FremgangsmÕte og vandig oppl°sning for inhibering av avleiringsdannelse
US5302297A (en)	1994-04-12	Removal of scale-forming inorganic salts from a produced brine
US5002126A (en)	1991-03-26	Reservoir scale inhibition
US3909200A (en)	1975-09-30	Use of guanidine derived compounds as corrosion inhibitors
US5167828A (en)	1992-12-01	Phosphinate-containing polymers for controlling scale in underground petroleum-containing formations and equipment associated therewith
AU610004B2 (en)	1991-05-09	Inhibition of reservoir scale
AU2008322980A1 (en)	2009-05-22	Methods of minimizing sulfate scale in oil field
EP2217671B1 (de)	2012-02-08	Verfahren zur verbesserten adsorption eines inhibitors auf einem bohrlochbereich
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