EP2046912A1 - Zusammensetzung zur verbesserten schaumbildung bei der gewinnung von erdöl- oder erdgas - Google Patents
Zusammensetzung zur verbesserten schaumbildung bei der gewinnung von erdöl- oder erdgasInfo
- Publication number
- EP2046912A1 EP2046912A1 EP07787644A EP07787644A EP2046912A1 EP 2046912 A1 EP2046912 A1 EP 2046912A1 EP 07787644 A EP07787644 A EP 07787644A EP 07787644 A EP07787644 A EP 07787644A EP 2046912 A1 EP2046912 A1 EP 2046912A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- block
- alkylene oxide
- composition
- oxide
- alcohol
- Prior art date
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- 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
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
-
- 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
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/017—Mixtures of compounds
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/38—Gaseous or foamed well-drilling compositions
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
Definitions
- a composition for improved foaming in the production of oil or natural gas A composition for improved foaming in the production of oil or natural gas
- the invention relates to the use of a composition for producing foams, in particular for the extraction of crude oil and natural gas.
- foams for tertiary mineral oil extraction or as an aid in drilling are known, for example, to use foams for tertiary mineral oil extraction or as an aid in drilling.
- the technique of using drilling fluid foamed drilling fluids is also known as aerated drilling.
- Foaming agents for the extraction of crude oil or natural gas must have an effect under the conditions prevailing in the deposit, ie. especially at the temperatures prevailing in the deposit as well as in the presence of highly salty storage water.
- CA 2,222,775 describes the use of amphoacetates (betaines) for foams in mineral oil production. These betaines show a strong foaming behavior and form stable foams even in the presence of hydrocarbons, which are known as defoamers.
- CA 751,200 describes the use of foam in drilling fluids. Attention is drawn in particular to the problem of producing stable foams in the presence of petroleum, ions, in particular divalent ions, and clays. Particularly advantageous amine oxides are described.
- CA 775,399 describes the use of foams in secondary petroleum production.
- surfactants numerous different types are mentioned, in particular quaternary ammonium salts, alkylphenol ethoxylates, sulfosuccinates, perfluorocarboxylates.
- No. 5,358,045 describes the use of hydrotropes as additives for frothers in tertiary mineral oil production. It is particularly pointed out that the hydrotrope ensures that known good frothers, such as sulfonates, are compatible with the salt and alkaline earth alkaline waters.
- the object is to provide substances and / or processes that the well proven in the oil and gas extraction foamers, such.
- sulfates and sulfonates phosphates, carboxylates, sulfosuccinates, betaines, quaternary ammonium salts, amine oxides, amine ethoxylates, amide ethoxylates, acid ethoxylates, alkylglucosides, EO-PO block copolymers or long-chain Fettalko- holethoxylate support so that for the same amount of foam and under the conditions oil and gas production produces more foam.
- x-y or x-y-z at least one different cosurfactant of the structure x-y or x-y-z, wherein x is a surfactant alcohol having 6 to 12 carbon atoms, y is an alkylene oxide block and z is an end group.
- foaming agent also called foaming agent or foaming agent
- foaming agent is understood to mean, in a manner known in principle, surfactants which have a certain film-forming capacity and thus promote the production of foam.
- a “sulfate” is understood to mean a surface-active compound which has at least one SCU group in the molecule, examples of sulfates which can be used according to the invention are
- a “sulfonate” is understood as meaning a surface-active compound which has at least one sulfonate group in the molecule, examples of sulfonates which can be used according to the invention are
- Alkylbenzenesulfonates - eg. Lutensit® A-LBS, Lutensit® A-LBN, Lutensit® A-LBA, Marion® AS3, Maranil® DBS,> alkylsulfonates - e.g. B.
- BIO-TERGE® AS-40 BIO-TERGE® AS-40 CG
- BIO-TERGE® AS-90 beads Calimulse® AOS-20, Calimulse® AOS-40, Calsoft® AOS-40 , Colonial® AOS-40, Elfan® OS 46, Ifrapon® AOS 38, Ifrapon® AOS 38 P, Jeenate® AOS-40, Nikkol® OS-14, Norfox® ALPHA XL, POLYSTEP® A-18, Rhodacal® A- 246L, Rhodacal® LSS-40 / A,> Sulfonated oils such as turkey,
- aromatic sulfonates e.g. Nekal® BX, Dowfax® 2A1.
- a "phosphate” is understood to mean a surface-active compound which has at least one PÜ4 group in the molecule, examples of phosphates which can be used according to the invention are
- a “carboxylate” is understood to mean a surface-active compound which has at least one carboxylate group in the molecule, examples of carboxylates which can be used according to the invention are
- sulfosuccinate is meant a surfactant compound having at least one SO 3 group and at least one succinate group in the molecule, examples of sulfosuccinates which may be used in the present invention
- Dioctylsulfosuccinate e.g. Eg Lutensit® A-BO.
- a "betaine” is understood as meaning a surface-active compound which carries at least one positive and one negative charge under conditions of use, ie under conditions which are borehole-facing or conditions which have been chosen for the simulation in the examples for betaines which can be used according to the invention
- Cocamidopropylbetaine e.g. B. MAFO® CAB, Amonyl® 380 BA, AMPHOSOL® CA, AMPHOSOL® CG, AMPHOSOL® CR, AMPHOSOL® HCG; AMPHOSOL®
- quaternary ammonium salt is meant a surfactant compound having at least one R 4 N + group in the molecule, examples of quaternary ammonium salts which can be used in the present invention
- amine oxide is understood to mean a surface-active compound which has at least one N-O group in the molecule, examples of amine oxides which can be used according to the invention are
- an "amine ethoxylate” is understood to mean a surface-active compound which has at least one -N [CH 2 CH 2 O-] 2 group in the molecule.
- Examples of amine ethoxylates which can be used according to the invention are
- amide ethoxylates which can be used according to the invention are
- acid ethoxylate is understood as meaning a surface-active compound which has at least one -C (OO) OCH 2 CH 2-group in the molecule
- acid ethoxylates which can be used according to the invention are
- alkylglucoside is understood to mean a surface-active compound which has at least one unit derived from sugar in the molecule, examples of alkylglucosides which can be used according to the invention are
- an "EO-PO block copolymer” is taken to mean a surfactant compound composed of multiple units, which are ethylene oxide (EO) and propylene oxide (PO) units, which are essentially in the molecule
- EO or PO units are between 5 and 50, preferably between 10 and 30.
- the weight ratio of EO to PO is 20:80 to 80:20, preferably 50:50 to 80:20 for EO-PO block copolymers that can be used in the invention
- a "long-chain fatty alcohol ethoxylate” is understood as meaning an interface-active compound which has at least one ethoxylate group in the molecule
- the term should also include ethoxylates based on oxo alcohols in a manner which is known in principle denotes a compound which has at least 10 C atoms, preferably at least 12 C atoms, particularly preferably 12 to 22 C atoms and very particularly 12 to 18 C atoms
- Examples of long-chain fatty alcohol ethoxylates which can be used according to the invention are > Lutensol® AO products, Lutensol® TO, Lutensol AT®, Lutensol® A .. N, Lialet® 123, Lialet® 125, Marlipal® 025, Marlipal® 013.
- hydrophilic fatty alcohol ethoxylates are used, i. Compounds whose proportion of EO in weight percent between 60% and 95%, preferably between 70% and 90%.
- the frothers are used in combination with at least one quenidine of the general formula x-y or x-y-z, where x is a surfactant alcohol, y is an alkylene oxide block and z is an end group.
- surfactant alcohol stands for monoalcohols which can function as hydrophobic component in the surfactant and, in addition to the OH group, comprise a hydrocarbon group which preferably has no further substituents.
- the surfactant alcohol used according to the invention comprises 6 to 12 C atoms, preferably 8 to 10 carbon atoms and particularly preferably 10 carbon atoms. It may be aliphatic or aliphatic / aromatic alcohols. They are preferably aliphatic alcohols. Of course, a mixture of different surfactant alcohols can be used.
- composition is used as described above, in which independently
- the surfactant alcohol x has on average 0 to 3 branches, preferably 1 to 2.5 branches and particularly preferably 1 to 1.5 branches,
- the surfactant alcohol x is a Guerbet alcohol
- the surfactant alcohol x is a composition of 2-propylheptanol and methylpropylhexanols
- the alkylene oxide block has from 3 to 30 alkyleneoxy units, preferably from 5 to 25 alkyleneoxy units and more preferably from 7 to 20 alkyleneoxy units,
- the alkylene oxide groups of the alkylene oxide block y are selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide, pentylene oxide and hexylene oxide, preferably consisting of ethylene oxide, propylene oxide and butylene oxide, more preferably consisting of ethylene oxide and propylene oxide and very particularly preferably consisting of ethylene oxide,
- the proportion of ethylene oxide in the alkylene oxide block y is at least 70 mol%, preferably at least 80 mol% and particularly preferably at least 90 mol%,
- the alkylene oxide block y has a block distribution, an alternating distribution, a statistical distribution or a gradient, preferably a block distribution, a statistical distribution or a gradient and particularly preferably a block distribution or a statistical distribution - in the case of a block distribution in one of ethylene oxide and higher Alkylene oxide block consisting of alkyleneoxy lower units, the part consisting of higher alkyleneoxy units is most preferably arranged directly after the surfactant alcohol, yielding a structure of the type x-yi-y 2 -z, where y i is an alkylene oxide block consisting of alkylene oxides having more than 2 C atoms and y 2 is an ethylene oxide block,
- the end group z is sulphate, phosphate or carboxylate, preferably sulphate or phosphate,
- compositions in which y consists of 8 to 25 ethylene oxide and 0 to 2 propylene oxide units, in particular from 10 to 20 ethylene oxide units and z is sulfate or absent.
- z is absent
- the general formula x-y-z corresponds to the formula x-y.
- the OH group of the alkylene block forms the conclusion of the molecule.
- the degree of branching of the surfactant alcohol is calculated as the number of saturated C atoms in the alcohol bound to 3 other C atoms plus twice the number of those attached to 4 other C atoms.
- the degree of branching can be readily determined by 13C / 1H NMR techniques.
- a cosurfactant which is composed of a Guerbetalko- hol having 6 to 12 carbon atoms and 10 to 20 ethylene oxide units.
- a composition as described above is preferred in which the weight ratio of foamer a): cosurfactant b) from 0.1: 1 to 100: 1, preferably from 0.5: 1 to 10: 1, particularly preferably 1: 1 to 10: 1 and in particular from 1: 1 to 5: 1, such as. B. 2: 1 or 3: 1.
- the composition described is according to the invention for the production of
- Foaming used. Techniques for producing foams are known to the person skilled in the art.
- foams can in principle be all types of foams.
- they are foams in which the liquid to be foamed is a predominantly aqueous liquid, in particular water.
- the composition used according to the invention is particularly suitable for frothing salty water, for example salty deposit water.
- the salts may, in particular, be those salts which normally occur in reservoir waters. Examples include alkali metal halides, in particular sodium chloride, but also soluble Ca and / or Mg salts.
- the aqueous liquid to be foamed comprises at least 1% by weight of dissolved salts, preferably at least 2% by weight and more preferably at least 5% by weight.
- the foam can be formed at all temperatures.
- the temperature of the liquid to be foamed is at least 40 0 C, for example 40 to 130 0 C, preferably 40 to 100 ° C.
- the foam is used to recover petroleum or natural gas. It can be used in all phases of the extraction of oil and / or natural gas. Examples include techniques for drilling in which the drilling fluid used is foamed by the injection of air (so-called "aerated drilling"), the actual production, especially in natural gas production, by placing the composition in a production well which is completely or partially filled with water is introduced, which forms a foam by rising gas or even in tertiary mineral oil production techniques in which foams are used.
- the components a) and b) can be used to produce foams in the form of a suitable formulation, for example dissolved in water or a predominantly aqueous solvent mixture.
- the mixture can also be added in substance to the medium to be foamed.
- the components can also be added individually (as a kit of parts) to the medium to be foamed.
- kit of parts various advantages are possible - for example, the ratio of a) to b) can be adapted directly to the conditions on site.
- a process for producing oil and / or gas using a composition as described above forms an object of the present invention. Details have already been described.
- a petroleum-water mixture containing a cosurfactant b) or a composition as described above also forms an article of the present invention such as a petroleum containing a cosurfactant b) or the composition as described above.
- the foam tester consisted of a thermostated and graduated 1500 ml glass cylinder, a circulation line of about 5 mm inner diameter and a pump with 200 l / h circulation capacity. The test solution was withdrawn from the bottom of the glass cylinder and returned to the vessel from above, introducing air and generating foam.
- the test fluid consisted of
- model oil C18-C36 hydrocarbon, comparable to diesel oil
- model deep water aqueous solution of sodium and alkaline earth chlorides, 64 g salt per liter, ionic strength 6.7 mol / l
- test liquid 500 ml was heated to 50 0 C, then 10 for minutes was foamed th, with a constant height by foam formation and decay ceased (equilibrium foam). Then it was turned off and the foam breakup was tracked depending on the waiting time. 4) results
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Cosmetics (AREA)
- Detergent Compositions (AREA)
- Confectionery (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07787644A EP2046912A1 (de) | 2006-07-24 | 2007-07-17 | Zusammensetzung zur verbesserten schaumbildung bei der gewinnung von erdöl- oder erdgas |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06117712 | 2006-07-24 | ||
| EP07787644A EP2046912A1 (de) | 2006-07-24 | 2007-07-17 | Zusammensetzung zur verbesserten schaumbildung bei der gewinnung von erdöl- oder erdgas |
| PCT/EP2007/057378 WO2008012242A1 (de) | 2006-07-24 | 2007-07-17 | Zusammensetzung zur verbesserten schaumbildung bei der gewinnung von erdöl- oder erdgas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2046912A1 true EP2046912A1 (de) | 2009-04-15 |
Family
ID=38563456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07787644A Withdrawn EP2046912A1 (de) | 2006-07-24 | 2007-07-17 | Zusammensetzung zur verbesserten schaumbildung bei der gewinnung von erdöl- oder erdgas |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7842650B2 (de) |
| EP (1) | EP2046912A1 (de) |
| CN (1) | CN101495593B (de) |
| BR (1) | BRPI0714838A2 (de) |
| CA (1) | CA2656462C (de) |
| EA (1) | EA018168B1 (de) |
| MX (1) | MX2009000056A (de) |
| NO (1) | NO20090056L (de) |
| WO (1) | WO2008012242A1 (de) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389398B (zh) * | 2006-02-22 | 2012-03-21 | 巴斯夫欧洲公司 | 含有短链和长链组分的表面活性剂混合物 |
| EP2268764B1 (de) * | 2008-04-21 | 2014-03-12 | Basf Se | Verwendung von tensidmischungen für die tertiäre erdölförderung |
| US7985718B2 (en) * | 2008-04-21 | 2011-07-26 | Basf Se | Use of surfactant mixtures for tertiary mineral oil extraction |
| CN102002354A (zh) * | 2010-11-02 | 2011-04-06 | 上海大学 | 超低油水界面张力驱油剂及其应用 |
| US9650558B2 (en) * | 2011-02-02 | 2017-05-16 | Baker Hughes Incorporated | Oil field treatment fluids |
| CA2873915C (en) * | 2012-06-11 | 2020-03-24 | Basf Se | Method of recovering oil from a subterranean formation |
| US10021174B2 (en) | 2012-09-25 | 2018-07-10 | A10 Networks, Inc. | Distributing service sessions |
| CN103773351B (zh) * | 2012-10-25 | 2017-10-27 | 中国石油化工股份有限公司 | 高盐油藏气驱用泡沫组合物及制备方法和用途 |
| CN102936491B (zh) * | 2012-11-20 | 2015-05-06 | 孙安顺 | 一种弱碱型表面活性复配剂及其中表面活性剂的制备方法 |
| CN103897672B (zh) * | 2012-12-27 | 2016-06-08 | 中国石油天然气集团公司 | 钻井用高抗油发泡剂 |
| CN103965854B (zh) * | 2013-02-05 | 2017-07-14 | 中国石油化工股份有限公司 | 可用于低渗透油藏的阴阳体系表面活性剂及制备方法 |
| CN103320102B (zh) * | 2013-07-03 | 2016-05-04 | 中国石油集团川庆钻探工程有限公司 | 一种水平井充氮气钻井用钻井液 |
| RU2559267C1 (ru) * | 2014-06-24 | 2015-08-10 | Общество с ограниченной ответственностью "Научно-исследовательский институт природных газов и газовых технологий - Газпром ВНИИГАЗ" | Состав для обработки призабойной зоны пласта терригенных коллекторов |
| CN104694091B (zh) * | 2015-01-15 | 2017-12-19 | 陕西延长石油油田化学科技有限责任公司 | 一种油田用起泡剂及其制备方法 |
| WO2016145164A1 (en) | 2015-03-10 | 2016-09-15 | Board Of Regents, The University Of Texas System | Short hydrophobe anionic surfactants |
| EP3101085A1 (de) | 2015-06-01 | 2016-12-07 | Cytec Industries Inc. | Schaumbildende tensid-zusammensetzungen |
| CN105114046A (zh) * | 2015-08-05 | 2015-12-02 | 中国石油化工股份有限公司 | 一种增能型泡沫排水采气工艺 |
| CA2996534A1 (en) * | 2015-08-26 | 2017-03-02 | Rhodia Operations | High-performance eco-friendly non-emulsifier |
| CN106590606B (zh) * | 2015-10-20 | 2019-07-09 | 中国石油化工股份有限公司 | 耐温抗盐低张力泡沫及其在泡沫封堵中的应用 |
| CN105505366B (zh) * | 2015-12-07 | 2018-05-18 | 东北石油大学 | 一种含羟基取代芳基烷基磺酸盐表面活性剂的弱碱三元复合驱油剂 |
| RU2615002C1 (ru) * | 2016-02-18 | 2017-04-03 | федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский государственный университет" | Состав реагента для увеличения нефтеотдачи пластов |
| CN107227147B (zh) * | 2016-03-23 | 2020-08-18 | 中国石油化工股份有限公司 | 一种起泡剂和泡沫气驱的方法 |
| CN108003849A (zh) * | 2016-10-28 | 2018-05-08 | 中国石油化工股份有限公司 | 泥页岩地层泡沫钻井用耐盐强抑制性发泡剂 |
| EP3551718B1 (de) | 2016-12-07 | 2021-10-13 | Basf Se | Wässrige zusammensetzungen von paraffininhibitoren |
| CN108949133B (zh) * | 2017-05-19 | 2020-12-11 | 中国石油化工股份有限公司 | 泡沫驱油体系及其制备方法 |
| MX2021015466A (es) | 2019-06-19 | 2022-04-20 | Rhodia Operations | Formulaciones espumantes para recuperacion de aceite mejoradas. |
| US11649395B2 (en) * | 2020-03-20 | 2023-05-16 | Cnpc Usa Corporation | Nonionic surfactants employed with extended chain as the oil displacement agent to use in enhanced oil recovery |
| US12565618B2 (en) | 2020-03-20 | 2026-03-03 | Cnpc Usa Corporation | Di-alkyl chain surfactants as a main surfactant for enhancing oil recovery for tight oil formations |
| CN114316923A (zh) * | 2020-10-09 | 2022-04-12 | 中石化南京化工研究院有限公司 | 一种微泡沫钻井液用发泡剂体系 |
| CN117946642A (zh) * | 2022-10-20 | 2024-04-30 | 中国石油化工股份有限公司 | 一种抑制性水基泡沫钻井液体系 |
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-
2007
- 2007-07-17 US US12/374,880 patent/US7842650B2/en not_active Expired - Fee Related
- 2007-07-17 CA CA2656462A patent/CA2656462C/en not_active Expired - Fee Related
- 2007-07-17 EA EA200900127A patent/EA018168B1/ru not_active IP Right Cessation
- 2007-07-17 BR BRPI0714838-0A patent/BRPI0714838A2/pt not_active Application Discontinuation
- 2007-07-17 CN CN2007800278015A patent/CN101495593B/zh not_active Expired - Fee Related
- 2007-07-17 EP EP07787644A patent/EP2046912A1/de not_active Withdrawn
- 2007-07-17 WO PCT/EP2007/057378 patent/WO2008012242A1/de not_active Ceased
- 2007-07-17 MX MX2009000056A patent/MX2009000056A/es active IP Right Grant
-
2009
- 2009-01-06 NO NO20090056A patent/NO20090056L/no not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008012242A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2656462A1 (en) | 2008-01-31 |
| BRPI0714838A2 (pt) | 2013-04-02 |
| CN101495593B (zh) | 2013-12-25 |
| WO2008012242A1 (de) | 2008-01-31 |
| US20090325824A1 (en) | 2009-12-31 |
| CA2656462C (en) | 2013-10-29 |
| US7842650B2 (en) | 2010-11-30 |
| NO20090056L (no) | 2009-01-29 |
| EA200900127A1 (ru) | 2009-06-30 |
| CN101495593A (zh) | 2009-07-29 |
| EA018168B1 (ru) | 2013-06-28 |
| MX2009000056A (es) | 2009-01-23 |
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