Peracetic acid oil-field biocide and method 机翻标题: 暂无翻译,请尝试点击翻译按钮。

公开号/公开日
GB201109027 D0 2011-07-13 [GB201109027]GB2477257 A 2011-07-27 [GB2477257]GB2477257 B 2014-06-18 [GB2477257] / 2011-07-132011-07-272014-06-18
申请号/申请日
2011GB-0009027 / 2009-12-07
发明人
ROVISON JOHN M JR;HUANG SHURONG;PFEFFER HENRY A;
申请人
FMC CORPORATION;
主分类号
IPC分类号
A01N-025/02A01N-025/10A01N-025/22A01N-037/02A01N-037/16A01N-059/00A01P-001/00C09K-008/12C09K-008/60C09K-008/68
摘要
(GB2477257) Aqueous well treatment fluid compositions with biocidal activity are disclosed comprising a polymer for modify ing fluid viscosity in the aqueous fluid, an organic monocarboxylic peracid being present in an anti-microbial amount of about 1 ppm to about 1000 ppm, and a controlled amount of hydrogen peroxide also being present.  Peracetic acid is the preferred peracid.  The viscosity-modifying polymer in the aqueous well treatment fluid composition may serve to reduce friction in the fluid or increase fluid viscosity.  A method of using such compositions is also disclosed.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2008US-61203078 2008-12-18 2009WO-US66928 2009-12-07
主权利要求
(GB2477257) 1. An aqueous well treatment fluid composition with biocidal activity suitable for a subterranean environment susceptible to contamination by sulphur -reducing bacteria comprising 0.01 to 10 wt % of a polymer or copolymer for modifying fluid viscosity; peracetic acid in an antimicrobial amount of 1 ppm to 300 ppm; and hydrogen peroxide, the hydrogen peroxide concentration being less than the peracid concentration; in an aqueous medium. 2. The composition of claim 1 wherein the polymer or copolymer is a fluid viscosity -reducing polymer or copolymer. C C 3. The composition of claim 2 wherein the peracetic acid is present in an amount of 1 ppm to 50 ppm. 4. The composition of claim 2 wherein the polymer or copolymer is selected from the group consisting of acrylamide-derived polymers and copolymers; acrylate-derived polymers and copolymers; guar and guar derivatives; ethylene oxide -derived polymers, and combinations of these. 5. The composition of claim 2 wherein the aqueous well treatment fluid composition is a slick water composition, containing an acrylamide-derived polymer or copolymer that functions as a friction reducer to improve the flow characteristics of the aqueous fluid composition. 6. The composition of claim 1 wherein the polymer or copolymer is a viscosity - increasing polymer or copolymer. 7. The composition of claim 6 wherein the peracetic acid is present in an amount of 1 ppm to 100 ppm. 8. The composition of claim 6 wherein the viscosity -increasing polymer or copolymer is selected from the group consisting of acrylamide-derived polymers and copolymers; acrylate-derived polymers and copolymers; natural and synthetic polysaccharides and their derivatives; natural and synthetic cellulosic polymers and copolymers and their derivatives; and combinations of these. 9. The composition of claim 8 wherein the viscosity -increasing polymer or copolymer is at least partially crosslinked. 10. A method of providing biocidal activity in a well treatment fluid comprising introducing into an aqueous well treatment fluid composition comprising 0.01 to 10 wt % of a polymer or copolymer for modifying fluid viscosity, a peracetic acid solution in an amount sufficient to provide an antimicrobial -effect of 1 ppm to 300 ppm peracetic acid, the aqueous peracetic acid solution having a peracetic acid weight concentration in excess of hydrogen peroxide also present in the aqueous peracetic acid solution; and thereafter directing the aqueous well treatment fluid into a subterranean environment susceptible to contamination by sulphur -reducing bacteria. 11. The method of claim 10 wherein the peracetic acid is introduced in an amount sufficient to provide an amount of 1 ppm to 50 ppm peracetic acid. 12. The method of claim 10 wherein the aqueous peracetic acid solution is introduced into the aqueous well treatment fluid composition when the composition has a pH less than 8. 13. The method of claim 10 wherein the aqueous peracetic acid solution is introduced into water used to prepare the aqueous well treatment fluid composition. 14. The method of claim 10 wherein the polymer or copolymer serves to reduce fluid viscosity and is present in an amount of 0.01 wt % to 1 wt %, based on the weight of the aqueous composition, to provide improved fluid flow characteristics. 15. The method of claim 14 wherein the polymer or copolymer is selected from the group consisting of acrylamide-derived polymers and copolymers; acrylate-derived polymers and copolymers; guar and guar derivatives; ethylene oxide -derived polymers, and combinations of these. 16. The method of claim 10 wherein the polymer or copolymer serves to increase fluid viscosity and is present in an amount of 0.1 wt % to 5 wt %, based on the weight of the aqueous composition, to provide increased fluid viscosity. 17. The method of claim 16 wherein the viscosity -increasing polymer is selected from the group consisting of acrylamide-derived polymers and copolymers; acrylate-derived polymers and copolymers; natural and synthetic polysaccharides and their derivatives; natural and synthetic cellulosic polymers and copolymers and their derivatives; and combinations of these. C C 18. The method of claim 17 wherein the viscosity -increasing polymer or copolymer is at least partially crosslinked. 19. The method of claim 10 wherein the sulfur -reducing bacteria are selected from the group consisting of Desulfovibrio species and Desulfotomaculum species. 20. The method of claim 10 wherein sufficient peracetic acid is present in the aqueous well treatment fluid composition to provide 1 ppm to 100 ppm peracetic acid in the subterranean environment.
法律状态
(GB2477257) LEGAL DETAILS FOR GB201109027  Actual or expected expiration date=2015-12-07    Legal state=DEAD    Status=LAPSED     Event publication date=2009-12-07  Event code=GB/APP  Event indicator=Pos  Event type=Examination events  Application details  Application country=GB GB201109027  Application date=2009-12-07  Standardized application number=2011GB-0009027     Event publication date=2011-07-13  Event code=GB/D0  Event indicator=Pos  Event type=Examination events  Patent application filed  Publication country=GB  Publication number=GB201109027  Publication stage Code=D0  Publication date=2011-07-13  Standardized publication number=GB201109027     Event publication date=2011-07-27  Event code=GB/A  Event type=Examination events  Published Application  Publication country=GB  Publication number=GB2477257  Publication stage Code=A  Publication date=2011-07-27  Standardized publication number=GB2477257     Event publication date=2014-06-18  Event code=GB/B  Event indicator=Pos  Event type=Event indicating In Force  Patent specification  Publication country=GB  Publication number=GB2477257  Publication stage Code=B  Publication date=2014-06-18  Standardized publication number=GB2477257     Event publication date=2015-03-11  Event code=GB/732E  Event type=Administrative notifications  Event type=Reassignment  Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) REGISTERED BETWEEN 20150212 AND 20150219     Event publication date=2016-08-24  Event code=GB/PCNP  Event indicator=Neg  Event type=Event indicating Not In Force  Patent ceased through non-payment of renewal fee  Effective date of the event=2015-12-07
专利类型码
D0AB
国别省市代码
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