CA2137007C - Methode d'elimination des impuretes renfermant des sulfates alcalins - Google Patents

Methode d'elimination des impuretes renfermant des sulfates alcalins Download PDF

Info

Publication number: CA2137007C
Authority: CA; Canada
Prior art keywords: scale; solvent; sonic energy; sulfate; solution
Prior art date: 1992-06-03
Legal status (The legal status 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 status listed.): Expired - Lifetime

Application number

CA002137007A

Other languages

English (en)

Other versions

CA2137007A1 (fr

Inventor

Richard L. Morris

James M. Paul

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Mobil Oil AS

Original Assignee

Mobil Oil AS

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.)

1992-06-03

Filing date

1993-06-02

Publication date

2003-09-16

1993-06-02 Application filed by Mobil Oil AS filed Critical Mobil Oil AS

1993-12-09 Publication of CA2137007A1 publication Critical patent/CA2137007A1/fr

2003-09-16 Application granted granted Critical

2003-09-16 Publication of CA2137007C publication Critical patent/CA2137007C/fr

2013-06-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims description 22
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title description 10
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims abstract description 14
-1 oxalate anion Chemical class 0.000 claims abstract description 9
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 6
TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 50
239000002253 acid Substances 0.000 claims description 13
OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 10
230000015572 biosynthetic process Effects 0.000 claims description 9
UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims description 9
239000002738 chelating agent Substances 0.000 claims description 8
239000000243 solution Substances 0.000 claims description 8
239000007864 aqueous solution Substances 0.000 claims description 6
ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
150000001450 anions Chemical class 0.000 claims description 5
239000011591 potassium Substances 0.000 claims description 5
229910052700 potassium Inorganic materials 0.000 claims description 5
150000003839 salts Chemical class 0.000 claims description 5
238000004519 manufacturing process Methods 0.000 claims description 4
239000000203 mixture Substances 0.000 claims description 4
239000012530 fluid Substances 0.000 claims description 2
229960001860 salicylate Drugs 0.000 claims description 2
230000000149 penetrating effect Effects 0.000 claims 1
239000002904 solvent Substances 0.000 abstract description 54
238000004090 dissolution Methods 0.000 abstract description 19
239000003054 catalyst Substances 0.000 abstract description 12
229910052784 alkaline earth metal Inorganic materials 0.000 abstract description 5
150000001342 alkaline earth metals Chemical class 0.000 abstract description 4
230000002708 enhancing effect Effects 0.000 abstract description 3
239000012670 alkaline solution Substances 0.000 abstract 1
MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 24
229960003330 pentetic acid Drugs 0.000 description 12
KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
238000005755 formation reaction Methods 0.000 description 8
235000006408 oxalic acid Nutrition 0.000 description 7
229910052788 barium Inorganic materials 0.000 description 6
DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 6
239000013522 chelant Substances 0.000 description 5
238000002834 transmittance Methods 0.000 description 5
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
239000003125 aqueous solvent Substances 0.000 description 4
150000001768 cations Chemical class 0.000 description 4
239000000047 product Substances 0.000 description 4
YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 4
238000012360 testing method Methods 0.000 description 4
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
239000013078 crystal Substances 0.000 description 3
238000002347 injection Methods 0.000 description 3
239000007924 injection Substances 0.000 description 3
239000000463 material Substances 0.000 description 3
235000011118 potassium hydroxide Nutrition 0.000 description 3
239000002244 precipitate Substances 0.000 description 3
AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
230000001464 adherent effect Effects 0.000 description 2
HJMZMZRCABDKKV-UHFFFAOYSA-N carbonocyanidic acid Chemical compound OC(=O)C#N HJMZMZRCABDKKV-UHFFFAOYSA-N 0.000 description 2
239000003795 chemical substances by application Substances 0.000 description 2
150000002500 ions Chemical class 0.000 description 2
230000007246 mechanism Effects 0.000 description 2
229910052751 metal Inorganic materials 0.000 description 2
239000002184 metal Substances 0.000 description 2
150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 2
FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
239000002245 particle Substances 0.000 description 2
230000008569 process Effects 0.000 description 2
238000011160 research Methods 0.000 description 2
229960004889 salicylic acid Drugs 0.000 description 2
CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
239000000126 substance Substances 0.000 description 2
CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
239000003643 water by type Substances 0.000 description 2
IJFXRHURBJZNAO-UHFFFAOYSA-N 3-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=CC(O)=C1 IJFXRHURBJZNAO-UHFFFAOYSA-N 0.000 description 1
241000894006 Bacteria Species 0.000 description 1
BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
229910052692 Dysprosium Inorganic materials 0.000 description 1
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
229910019142 PO4 Inorganic materials 0.000 description 1
229910001329 Terfenol-D Inorganic materials 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
230000009471 action Effects 0.000 description 1
238000005054 agglomeration Methods 0.000 description 1
230000002776 aggregation Effects 0.000 description 1
229910052792 caesium Inorganic materials 0.000 description 1
TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
229910052791 calcium Inorganic materials 0.000 description 1
239000011575 calcium Substances 0.000 description 1
VAWSWDPVUFTPQO-UHFFFAOYSA-N calcium strontium Chemical compound [Ca].[Sr] VAWSWDPVUFTPQO-UHFFFAOYSA-N 0.000 description 1
230000008859 change Effects 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
238000004140 cleaning Methods 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
230000007423 decrease Effects 0.000 description 1
230000001934 delay Effects 0.000 description 1
IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 description 1
239000006185 dispersion Substances 0.000 description 1
KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
230000005284 excitation Effects 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
238000011010 flushing procedure Methods 0.000 description 1
239000011521 glass Substances 0.000 description 1
229960004275 glycolic acid Drugs 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
239000008235 industrial water Substances 0.000 description 1
229910052500 inorganic mineral Inorganic materials 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
238000009533 lab test Methods 0.000 description 1
229910052749 magnesium Inorganic materials 0.000 description 1
239000011777 magnesium Substances 0.000 description 1
239000011707 mineral Substances 0.000 description 1
235000010755 mineral Nutrition 0.000 description 1
150000003891 oxalate salts Chemical class 0.000 description 1
230000035699 permeability Effects 0.000 description 1
239000012071 phase Substances 0.000 description 1
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
239000010452 phosphate Substances 0.000 description 1
XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
229910052705 radium Inorganic materials 0.000 description 1
HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
230000009467 reduction Effects 0.000 description 1
YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
238000002791 soaking Methods 0.000 description 1
239000011734 sodium Substances 0.000 description 1
229910052708 sodium Inorganic materials 0.000 description 1
239000007787 solid Substances 0.000 description 1
239000007790 solid phase Substances 0.000 description 1
238000001179 sorption measurement Methods 0.000 description 1
241000894007 species Species 0.000 description 1
230000003068 static effect Effects 0.000 description 1
238000003756 stirring Methods 0.000 description 1
229910052712 strontium Inorganic materials 0.000 description 1
150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
238000012546 transfer Methods 0.000 description 1

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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/02—Methods
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- 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
- E21B43/003—Vibrating earth formations

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Geology (AREA)
Mining & Mineral Resources (AREA)
General Life Sciences & Earth Sciences (AREA)
Environmental & Geological Engineering (AREA)
Fluid Mechanics (AREA)
Geochemistry & Mineralogy (AREA)
Chemical Kinetics & Catalysis (AREA)
Organic Chemistry (AREA)
Materials Engineering (AREA)
Physics & Mathematics (AREA)
Manufacturing & Machinery (AREA)
Inorganic Chemistry (AREA)
Mechanical Engineering (AREA)
Metallurgy (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Saccharide Compounds (AREA)
Detergent Compositions (AREA)
Physical Or Chemical Processes And Apparatus (AREA)
Cleaning By Liquid Or Steam (AREA)

CA002137007A 1992-06-03 1993-06-02 Methode d'elimination des impuretes renfermant des sulfates alcalins Expired - Lifetime CA2137007C (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US89287692A	1992-06-03	1992-06-03
US07/892,876		1992-06-03
PCT/US1993/005317 WO1993024199A1 (fr)	1992-06-03	1993-06-02	Procede de suppression du tartre de sulfate alcalin

Publications (2)

Publication Number	Publication Date
CA2137007A1 CA2137007A1 (fr)	1993-12-09
CA2137007C true CA2137007C (fr)	2003-09-16

Family

ID=25400649

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002137007A Expired - Lifetime CA2137007C (fr)	1992-06-03	1993-06-02	Methode d'elimination des impuretes renfermant des sulfates alcalins

Country Status (6)

Country	Link
CA (1)	CA2137007C (fr)
GB (1)	GB2282619B (fr)
NL (1)	NL9320035A (fr)
NO (1)	NO312438B1 (fr)
RU (1)	RU2110489C1 (fr)
WO (1)	WO1993024199A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE59609982D1 (de) *	1995-03-24	2003-01-30	Norbert Patzner	Verfahren und Vorrichtung zum Reinigen von Brunnen mit Hilfe von Ultraschall
GB2338254B (en)	1998-06-12	2002-10-16	Sofitech Nv	Well completion clean-up fluids and method for cleaning up drilling and completion filtercakes
US6140277A (en) *	1998-12-31	2000-10-31	Schlumberger Technology Corporation	Fluids and techniques for hydrocarbon well completion
GB9914398D0 (en)	1999-06-22	1999-08-18	Bp Exploration Operating	Reduction in solids deposition
GB9925373D0 (en)	1999-10-27	1999-12-29	Schlumberger Ltd	Downhole instrumentation and cleaning system
US6631764B2 (en)	2000-02-17	2003-10-14	Schlumberger Technology Corporation	Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids
RU2286204C1 (ru) *	2005-04-20	2006-10-27	Общество с ограниченной ответственностью "Астор-С"	Способ приготовления водных растворов электролитов под воздействием ультразвуковой кавитации
RU2490430C1 (ru) *	2012-10-04	2013-08-20	Открытое акционерное общество "Татнефть" им. В.Д. Шашина	Способ эксплуатации нефтепромыслового трубопровода
RU2552434C1 (ru) *	2014-04-17	2015-06-10	Федеральное государственное бюджетное учреждение науки Институт химии нефти Сибирского отделения Российской академии наук	Состав для удаления отложений из нефтяных скважин и призабойной зоны пласта
DE102017011116A1 (de) *	2017-11-30	2019-06-06	Alfred Pohlen	Online-Reiniger für wasserführende oder mit Wasser in Kontakt stehende Anlagen
CA3038556A1 (fr)	2019-04-01	2020-10-01	Fluid Energy Group Ltd.	Composition servant a l`elimination de tartre de sulfate
CA3049343A1 (fr)	2019-07-11	2021-01-11	Fluid Energy Group Ltd.	Composition servant a l`elimination de tartre de sulfate
CA3114487A1 (fr)	2021-04-09	2022-10-09	Fluid Energy Group Ltd	Composition servant a l'elimination de tartre de sulfate
US20250196201A1 (en) *	2023-12-14	2025-06-19	Petróleo Brasileiro S.A. - Petrobras	Method of laser stimulation of barium and/or strontium complexion by dtpa

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3648769A (en) *	1970-09-04	1972-03-14	Beehler Vernon D	Well cleaner
US3956164A (en) *	1974-09-23	1976-05-11	Calgon Corporation	Chelating agents
US4320528A (en) *	1980-01-23	1982-03-16	Anco Engineers, Inc.	Ultrasonic cleaner
US4980077A (en) *	1989-06-22	1990-12-25	Mobil Oil Corporation	Method for removing alkaline sulfate scale

1993
- 1993-06-02 WO PCT/US1993/005317 patent/WO1993024199A1/fr not_active Ceased
- 1993-06-02 GB GB9423576A patent/GB2282619B/en not_active Expired - Lifetime
- 1993-06-02 NL NL9320035A patent/NL9320035A/nl active Search and Examination
- 1993-06-02 CA CA002137007A patent/CA2137007C/fr not_active Expired - Lifetime
- 1993-06-02 RU RU94046196A patent/RU2110489C1/ru active
1994
- 1994-12-02 NO NO19944660A patent/NO312438B1/no not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB9423576D0 (en)	1995-01-11
CA2137007A1 (fr)	1993-12-09
NO944660L (no)	1994-12-02
GB2282619A (en)	1995-04-12
NL9320035A (nl)	1995-05-01
RU2110489C1 (ru)	1998-05-10
NO944660D0 (no)	1994-12-02
NO312438B1 (no)	2002-05-13
WO1993024199A1 (fr)	1993-12-09
RU94046196A (ru)	1996-10-20
GB2282619B (en)	1996-06-05

Legal Events

Date	Code	Title	Description
2000-06-01	EEER	Examination request

Publication	Publication Date	Title
US5093020A (en)	1992-03-03	Method for removing an alkaline earth metal sulfate scale
US5190656A (en)	1993-03-02	Method for removing scale via a liquid membrane in combination with an amino carboxylic acid and a catalyst
US5183112A (en)	1993-02-02	Method for scale removal in a wellbore
EP0663510B1 (fr)	2004-11-17	Dissolution de la calamine de sulfate
US5084105A (en)	1992-01-28	Sulfate scale dissolution
US5458860A (en)	1995-10-17	Method for removing alkaline sulfate scale
WO1993024199A1 (fr)	1993-12-09	Procede de suppression du tartre de sulfate alcalin
US20190071597A1 (en)	2019-03-07	Composition useful in sulfate scale removal
WO1996004208A1 (fr)	1996-02-15	Compose d'elimination de depots
EP1996745A1 (fr)	2008-12-03	Procédé de dissolution de dépôts sur les équipements d'exploitation pétrolière
US5026481A (en)	1991-06-25	Liquid membrane catalytic scale dissolution method
US5200117A (en)	1993-04-06	Sulfate scale dissolution
US20140171345A1 (en)	2014-06-19	Well treatment composites for use in well treatment fluids
US5032280A (en)	1991-07-16	Liquid membrane catalytic scale dissolution method
US4096869A (en)	1978-06-27	Formulation for the dissolution of gypsum
WO1995016104A1 (fr)	1995-06-15	Procede de dissolution du tartre dans une formation contenant des intervalles productifs multiples
EP0447120B1 (fr)	1995-05-24	Méthode à membrane liquide pour la dissolution catalytique du tartre
EP0764061B1 (fr)	2003-04-02	Procede d'elimination de depots de metaux alcalino-terreux
CN120159352A (zh)	2025-06-17	对通过dtpa的钡和/或锶络合进行激光激励的方法
CA2182091C (fr)	2007-05-15	Procede d'elimination de depots de metaux alcalino-terreux