Process for stimulating production of methane from petroleum in subterranean formations 机翻标题: 暂无翻译,请尝试点击翻译按钮。

公开号/公开日
US2007251146 A1 2007-11-01 [US20070251146]US9068107 B2 2015-06-30 [US9068107] / 2007-11-012015-06-30
申请号/申请日
2005US-11569706 / 2005-05-27
发明人
LARTER STEPHEN RICHARD;HEAD IAN MCCUTCHEON;JONES DAVID MARTIN;ERDMANN MICHAEL;WILHELMS ARND;
申请人
NORSK HYDRO;UNIVERSITY OF NEWCASTLE UPON TYNE;
主分类号
IPC分类号
B09C-001/10C09K-008/582C12P-005/02
摘要
(US9068107) A process for stimulating microbial methane production in a petroleum-bearing subterranean formation, comprising: (a) analyzing one or more components of the formation to determine characteristics of the formation environment; (b) detecting the presence of a microbial consortium, comprising at least one methanogenic microorganism, within the formation; (c) assessing whether the formation microorganisms are currently active; (d) determining whether the microbial consortium comprises one or more methanotrophic microorganism; (e) characterization of one or more microorganisms of the consortium, at least one of the members of the consortium being a methanogenic microorganism, and comparing the members of the consortium with at least one known microorganism having one or more known physiological and ecological characteristics; (f) characterization of one or more methanotrophic microorganisms of the consortium (if present), and comparing the members of the consortium with at least one known microorganism having one or more known physiological and ecological characteristics; (g) using information obtained from steps (a) through (e) for determining an ecological environment that promotes in situ microbial degradation of petroleum and promotes microbial generation of methane by at least one methanogenic microorganism of the consortium; (h) using information obtained from steps (a) and (f), if methanotrophic microorganisms are present, for determining an ecological environment that demotes in situ microbial degradation of methane by at least one methanotrophic microorganism of the consortium; and (i) modifying the formation environment based on the determinations of steps (g) and (h), if methanotrophic microorganisms are present, to stimulate microbial conversion of petroleums to methane while minimising methane destruction by adverse processes.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2004GB-0012060 2004-05-28 2005WO-GB02121 2005-05-27
主权利要求
(US9068107) The invention claimed is: 1.  A process for stimulating microbial methane production in a petroleum-bearing subterranean formation, in which a microbial consortium comprising at least one methanogenic microorganism and one or more methanotrophic microorganisms are present, comprising: (a) analyzing one or more components of the formation to determine characteristics of the formation environment;   (b) detecting the presence of the microbial consortium, comprising at least one methanogenic microorganism, within the formation;   (c) assessing whether the formation microorganisms are currently active;   (d) determining that the microbial consortium comprises one or more methanotrophic microorganisms, and assessing whether said one or more methantrophic microorganisms are active;   (e) characterizing one or more microorganisms of the consortium, at least one of the members of the consortium being a methanogenic microorganism, and comparing the members of the consortium with at least one known microorganism having one or more known physiological and ecological characteristics;   (f) characterizing one or more methanotrophic microorganisms of the consortium, and comparing the members of the consortium with at least one known microorganism having one or more known physiological and ecological characteristics;   (g) using information obtained from steps (a) through (e) for determining an ecological environment that promotes in situ microbial degradation of petroleum and promotes microbial generation of methane by at least one methanogenic microorganism of the consortium;   (h) using information obtained from steps (a) and (f) for determining an ecological environment that demotes in situ microbial degradation of methane by at least one methanotrophic microorganism of the consortium; and   (i) modifying the formation environment based on the determinations of steps (g) and (h) to stimulate microbial conversion of petroleums to methane while minimizing methane destruction by adverse processes. 2. A method according to claim 1, wherein the step of detecting the presence of anaerobic oil-degrading bacteria is part of step (b). 3. A method according to claim 1, which includes identifying products of indigenous microbial activity. 4. A method according to claim 3, wherein the products identified include anaerobic hydrocarbon degradation metabolites. 5. A method according to claim 1, which includes identifying archaeols. 6. A method according to claim 1, wherein the analysis in step (a) is focused on the oil-water transition zones in the formation. 7. A method according to claim 1, wherein geochemical proxies are used to assess whether the formation is actively degrading. 8. A method according to claim 1, wherein step (e), and step (f) are characterized using genetic characterization methods. 9. A method according to claim 8, wherein the genetic characterization methods include comparison of sequences of genetic fragments sampled from the microorganisms against sequences from known microorganisms. 10. A method according to claim1, wherein the step of modifying the formation environment includes introducing an additive selected from: (a) major nutrients;   (b) vitamins;   (c) trace elements;   (d) buffers;   (e) waters of: (i) different salinities; (ii) different pH values;   (iii) containing complexing agents;    (f) inhibitors for methane degradation activity. 11. A method according to claim 10, wherein the concentration of phosphorus in the formation environment is increased. 12. A method according to claim 10, wherein the concentration of ammonium ion in the formation environment is increased. 13. A method according to claim 10, wherein the concentration of potassium in the formation environment is increased. 14. A method according to claim 1, wherein the step of modifying the formation environment includes gas sparging or flushing. 15. A method according to claim 1, wherein the step of modifying the formation environment includes injection of reactive liquid organic matter into the formation.
法律状态
(US9068107) LEGAL DETAILS FOR US2007251146  Actual or expected expiration date=2031-02-05    Legal state=ALIVE    Status=GRANTED     Event publication date=2005-05-27  Event code=US/APP  Event indicator=Pos  Event type=Examination events  Application details  Application country=US US11569706  Application date=2005-05-27  Standardized application number=2005US-11569706     Event publication date=2007-02-08  Event code=US/AS  Event type=Change of name or address  Event type=Reassignment  Assignment OWNER: NORSK HYDRO ASA, NORWAY ASSIGNMENT OF ASSIGNORS INTEREST ASSIGNORS:ERDMANN, MICHAEL WILHELMS, ARND REEL/FRAME:018867/0697 SIGNING DATES FROM 20050804 TO 20050808     Event publication date=2007-02-08  Event code=US/AS  Event type=Change of name or address  Event type=Reassignment  Assignment OWNER: THE UNIVERSITY OF NEWCASTLE UPON TYNE, UNITED KING ASSIGNMENT OF ASSIGNORS INTEREST ASSIGNORS:LARTER, STEPHEN RICHARD HEAD, IAN MCCUTCHEON JONES, DAVID MARTIN SIGNING DATES FROM 20050512 TO 20050519 REEL/FRAME:018867/0626     Event publication date=2007-02-08  Event code=US/AS  Event type=Change of name or address  Event type=Reassignment  Assignment OWNER: THE UNIVERSITY OF NEWCASTLE UPON TYNE, UNITED KING ASSIGNMENT OF ASSIGNORS INTEREST ASSIGNORS:LARTER, STEPHEN RICHARD HEAD, IAN MCCUTCHEON JONES, DAVID MARTIN REEL/FRAME:018867/0626 SIGNING DATES FROM 20050512 TO 20050519     Event publication date=2007-02-08  Event code=US/AS  Event type=Change of name or address  Event type=Reassignment  Assignment OWNER: NORSK HYDRO ASA, NORWAY ASSIGNMENT OF ASSIGNORS INTEREST ASSIGNORS:ERDMANN, MICHAEL WILHELMS, ARND SIGNING DATES FROM 20050804 TO 20050808 REEL/FRAME:018867/0697     Event publication date=2007-11-01  Event code=US/A1  Event type=Examination events  Application published  Publication country=US  Publication number=US2007251146  Publication stage Code=A1  Publication date=2007-11-01  Standardized publication number=US20070251146     Event publication date=2015-06-30  Event code=US/B2  Event indicator=Pos  Event type=Event indicating In Force  Granted patent as second publication  Publication country=US  Publication number=US9068107  Publication stage Code=B2  Publication date=2015-06-30  Standardized publication number=US9068107     Event publication date=2015-06-30  Event code=US/354  Event indicator=Pos  Event type=Event indicating In Force  Event type=Extension of term of duration of protection  Patent term extension under  35 U.S.C 154(b) until/for:  Number of days of extension=2080
专利类型码
A1B2
国别省市代码
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