Method for formation of an aqueous well treatment fluid with biocidal activity 机翻标题: 暂无翻译,请尝试点击翻译按钮。

公开号/公开日
WO2017196567 A1 2017-11-16 [WO2017196567] / 2017-11-16
申请号/申请日
2017WO-US30361 / 2017-05-01
发明人
MATHEWS ALISON JANE;SAMUEL MATHEW M;
申请人
LUBRIZOL OILFIELD SOLUTIONS;
主分类号
IPC分类号
A01N-037/16A01N-059/00A01P-001/00
摘要
(WO2017196567) The present invention relates to a method of formation of an aqueous well treatment fluid composition with biocidal activity.  The method has use on oil and gas field operations.  A method of formation of an aqueous well treatment composition with antimicrobial activity comprising adding to an aqueous composition, a source of hydrogen peroxide, selected from the group consisting of percarbonates and peroxides; and an N-acetylated ethylene diamine; such that an effective antimicrobial amount of peracetic acid is formed.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2016US-62335258 2016-05-12
主权利要求
(WO2017196567) What is claimed is: 1. A method of formation of an aqueous well treatment composition with antimicrobial activity comprising adding to an aqueous composition: (i) a source of hydrogen peroxide, selected from the group consisting of percarbonates and peroxides; and (ii) an N-acetylated ethylene diamine; such that an effective antimicrobial amount of peracetic acid is formed. 2. The method according to claim 1 wherein the N-acetylated ethylene diamine material comprises Ν,Ν,Ν',Ν'-tetraacetylethylene diamine (TAED). 3. The method according to claim 1 or claim 2 wherein the effective antimicrobial amount is 1-1000ppm. 4. The method of any preceding claim wherein the well treatment composition has biocidal activity. 5. The method according to any preceding claim wherein the hydrogen peroxide is added in stoichiometric excess to the N-acetylated ethylene diamine. 6. The method according to any preceding claim wherein the hydrogen peroxide concentration in the resultant composition is less than the resultant organic monocarboxylic peracid concentration, preferably wherein the ratio by mass of organic monocarboxylic peracid to hydrogen peroxide is more than 2:1 , preferably more than 10: 1. 7. The method according to any preceding claim, wherein the source of hydrogen peroxide is added in an amount of from 0.0037 to 1.281 g per litre of aqueous well treatment composition. 8. The method according to any preceding claim, wherein the N-acetylated ethylene diamine is added in an amount of from 0.0036 to 1.248 g per litre of aqueous well treatment composition. 9. The method according to any preceding claim wherein the organic monocarboxylic peracid is peracetic acid. 10. The method according to any preceding claim wherein the source of hydrogen peroxide is a peroxygen compound selected from the group consisting of sodium percarbonate and calcium peroxide, preferably sodium percarbonate. 11. The method according to any preceding claim wherein the aqueous well treatment composition further comprises one or more additives selected from polymeric viscosifiers, proppants, corrosion inhibitors, scale inhibitors, biocides, breakers, cross-linkers and gels, clay and shale stabilizers, iron chelators, non- emulsifiers, surfactants, pH adjusters and enzymes. 12. The method according to any preceding claim wherein the organic monocarboxylic peracid inhibits the growth of at least one of plankton, phytoplankton, zooplankton, microbial organisms, nekton organisms, or benthic organisms in the aqueous well treatment composition. 13. The method according to any of preceding claim which further comprises directing the aqueous well treatment composition into a subterranean environment. 14. The method according to any preceding claim for use in an oil or gas well. 15. The method according to claim 1 1 or 12 which comprises injecting the aqueous well treatment composition into a wellbore through a formation at sufficiently high pressure to fracture the formation. 16. An aqueous well treatment composition obtainable by the method of any of claims 1 to 12, wherein the ratio by mass of organic monocarboxylic peracid to hydrogen peroxide is more than 1 :1. 17. The aqueous well treatment composition of claim 16, wherein the ratio by mass of organic monocarboxylic peracid to hydrogen peroxide is more than 2:1 , preferably more than 10: 1. 18. A method of creating an antimicrobial or biocidal environment in an oil or gas well, said method comprising forming an aqueous well treatment composition according to claim 1 and directing the aqueous well treatment composition into the oil or gas well. 19. The method of claim 18, further comprising contacting the aqueous well treatment composition with a metal surface, preferably a steel surface.
法律状态
(WO2017196567) LEGAL DETAILS FOR WO2017196567  Actual or expected expiration date=2019-11-12    Legal state=ALIVE    Status=PENDING     Event publication date=2017-05-01  Event code=WO/APP  Event indicator=Pos  Event type=Examination events  Application details  Application country=WO WOUS2017030361  Application date=2017-05-01  Standardized application number=2017WO-US30361     Event publication date=2017-11-16  Event code=WO/A1  Event type=Examination events  Published application with search report  Publication country=WO  Publication number=WO2017196567  Publication stage Code=A1  Publication date=2017-11-16  Standardized publication number=WO2017196567
专利类型码
A1
国别省市代码
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