EP2004952A4 - Conformance control through stimulus-responsive materials - Google Patents
Conformance control through stimulus-responsive materialsInfo
- Publication number
- EP2004952A4 EP2004952A4 EP07716256A EP07716256A EP2004952A4 EP 2004952 A4 EP2004952 A4 EP 2004952A4 EP 07716256 A EP07716256 A EP 07716256A EP 07716256 A EP07716256 A EP 07716256A EP 2004952 A4 EP2004952 A4 EP 2004952A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- stimulus
- responsive materials
- conformance control
- conformance
- control
- 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- Withdrawn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
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
- C09K8/57—Compositions based on water or polar solvents
- C09K8/575—Compositions based on water or polar solvents containing organic compounds
- C09K8/5751—Macromolecular 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
- C09K8/56—Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
- C09K8/57—Compositions based on water or polar solvents
- C09K8/575—Compositions based on water or polar solvents containing organic compounds
- C09K8/5751—Macromolecular compounds
- C09K8/5756—Macromolecular compounds containing cross-linking 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
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of 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
- E21B43/32—Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Coating Apparatus (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Polymerisation Methods In General (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77208706P | 2006-02-10 | 2006-02-10 | |
PCT/US2007/000097 WO2007094897A2 (en) | 2006-02-10 | 2007-01-04 | Conformance control through stimulus-responsive materials |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2004952A2 EP2004952A2 (en) | 2008-12-24 |
EP2004952A4 true EP2004952A4 (en) | 2010-12-15 |
Family
ID=36748915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07716256A Withdrawn EP2004952A4 (en) | 2006-02-10 | 2007-01-04 | Conformance control through stimulus-responsive materials |
Country Status (10)
Country | Link |
---|---|
US (1) | US20100038086A1 (en) |
EP (1) | EP2004952A4 (en) |
CN (1) | CN101529051A (en) |
AU (1) | AU2007215547A1 (en) |
BR (1) | BRPI0707415A2 (en) |
CA (1) | CA2636331A1 (en) |
EA (1) | EA014125B1 (en) |
MX (1) | MX2008010008A (en) |
NO (1) | NO20083319L (en) |
WO (1) | WO2007094897A2 (en) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7520327B2 (en) * | 2006-07-20 | 2009-04-21 | Halliburton Energy Services, Inc. | Methods and materials for subterranean fluid forming barriers in materials surrounding wells |
US20080283238A1 (en) * | 2007-05-16 | 2008-11-20 | William Mark Richards | Apparatus for autonomously controlling the inflow of production fluids from a subterranean well |
GB0711979D0 (en) * | 2007-06-21 | 2007-08-01 | Swelltec Ltd | Method and apparatus |
WO2009051881A1 (en) | 2007-10-16 | 2009-04-23 | Exxonmobil Upstream Research Company | Fluid control apparatus and methods for production and injection wells |
US20090101329A1 (en) * | 2007-10-19 | 2009-04-23 | Baker Hughes Incorporated | Water Sensing Adaptable Inflow Control Device Using a Powered System |
US8069921B2 (en) * | 2007-10-19 | 2011-12-06 | Baker Hughes Incorporated | Adjustable flow control devices for use in hydrocarbon production |
US8544548B2 (en) | 2007-10-19 | 2013-10-01 | Baker Hughes Incorporated | Water dissolvable materials for activating inflow control devices that control flow of subsurface fluids |
GB2455807B (en) | 2007-12-22 | 2012-08-22 | Weatherford Lamb | Isolating tubing |
US8839849B2 (en) * | 2008-03-18 | 2014-09-23 | Baker Hughes Incorporated | Water sensitive variable counterweight device driven by osmosis |
US7947630B2 (en) * | 2008-04-21 | 2011-05-24 | Nalco Company | Compositions comprising at least two different polymeric microparticles and methods for recovering hydrocarbon fluids from a subterranean reservoir |
US8931570B2 (en) | 2008-05-08 | 2015-01-13 | Baker Hughes Incorporated | Reactive in-flow control device for subterranean wellbores |
US20110005752A1 (en) * | 2008-08-14 | 2011-01-13 | Baker Hughes Incorporated | Water Sensitive Porous Medium to Control Downhole Water Production and Method Therefor |
NO338993B1 (en) * | 2008-11-18 | 2016-11-07 | Statoil Petroleum As | Flow control device and method for controlling fluid flow in oil and / or gas production |
US8839861B2 (en) | 2009-04-14 | 2014-09-23 | Exxonmobil Upstream Research Company | Systems and methods for providing zonal isolation in wells |
US8151881B2 (en) * | 2009-06-02 | 2012-04-10 | Baker Hughes Incorporated | Permeability flow balancing within integral screen joints |
US8443888B2 (en) * | 2009-08-13 | 2013-05-21 | Baker Hughes Incorporated | Apparatus and method for passive fluid control in a wellbore |
US9109423B2 (en) * | 2009-08-18 | 2015-08-18 | Halliburton Energy Services, Inc. | Apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
EP2501894B1 (en) * | 2009-11-20 | 2018-07-11 | Exxonmobil Upstream Research Company | Open-hole packer for alternate path gravel packing, and method for completing an open-hole wellbore |
EP2598712A4 (en) | 2010-06-24 | 2016-03-30 | Chevron Usa Inc | A system and method for conformance control in a subterranean reservoir |
WO2012081987A1 (en) * | 2010-12-16 | 2012-06-21 | Statoil Petroleum As | An arrangement and method for water shut-off in an oil and/or gas well |
WO2012084890A1 (en) * | 2010-12-22 | 2012-06-28 | Shell Internationale Research Maatschappij B.V. | Method and system for providing an annular seal |
US8684077B2 (en) | 2010-12-30 | 2014-04-01 | Baker Hughes Incorporated | Watercut sensor using reactive media to estimate a parameter of a fluid flowing in a conduit |
US8477303B2 (en) | 2011-01-26 | 2013-07-02 | Hewlett-Packard Development Company, L.P. | Reconfigurable surface enhanced Raman spectroscopy apparatus, system and method |
US8678035B2 (en) * | 2011-04-11 | 2014-03-25 | Halliburton Energy Services, Inc. | Selectively variable flow restrictor for use in a subterranean well |
RU2473799C2 (en) * | 2011-04-22 | 2013-01-27 | Шлюмберже Текнолоджи Б.В. | Method for increasing bottom-hole formation zone permeability |
US9004173B2 (en) | 2011-05-10 | 2015-04-14 | Baker Hughes Incorporated | Cement wiper plug with size changing feature |
US8789597B2 (en) * | 2011-07-27 | 2014-07-29 | Saudi Arabian Oil Company | Water self-shutoff tubular |
US9080980B2 (en) | 2011-07-27 | 2015-07-14 | Hewlett-Packard Development Company, L.P. | Surface enhanced raman spectroscopy employing a nanorod in a surface indentation |
US9574433B2 (en) * | 2011-08-05 | 2017-02-21 | Petrohawk Properties, Lp | System and method for quantifying stimulated rock quality in a wellbore |
US9051819B2 (en) | 2011-08-22 | 2015-06-09 | Baker Hughes Incorporated | Method and apparatus for selectively controlling fluid flow |
US20130126184A1 (en) * | 2011-11-17 | 2013-05-23 | David P. Gerrard | Reactive choke for automatic wellbore fluid management and methods of using same |
US9334708B2 (en) | 2012-04-23 | 2016-05-10 | Baker Hughes Incorporated | Flow control device, method and production adjustment arrangement |
US9169433B2 (en) | 2012-09-27 | 2015-10-27 | Halliburton Energy Services, Inc. | Methods for enhancing well productivity and minimizing water production using swellable polymers |
US9598927B2 (en) * | 2012-11-15 | 2017-03-21 | Halliburton Energy Services, Inc. | Expandable coating for solid particles and associated methods of use in subterranean treatments |
CN103244081B (en) * | 2013-05-13 | 2015-04-08 | 中国石油大学(华东) | Gravel pack filling monitoring system and monitoring method based on magnetic media |
CN103266877B (en) * | 2013-06-06 | 2015-06-17 | 中国石油大学(华东) | Proppant reflux control system and control method based on magnetic proppant |
CN103291272B (en) * | 2013-06-14 | 2015-06-17 | 中国石油大学(华东) | Supporting agent laying controlling system and method based on magnetic supporting agent |
WO2015057096A1 (en) * | 2013-10-17 | 2015-04-23 | Schlumberger Canada Limited | Methods of treating a subterranean formation with shrinkable fibers |
US20150159079A1 (en) * | 2013-12-10 | 2015-06-11 | Board Of Regents, The University Of Texas System | Methods and compositions for conformance control using temperature-triggered polymer gel with magnetic nanoparticles |
US9797212B2 (en) * | 2014-03-31 | 2017-10-24 | Schlumberger Technology Corporation | Method of treating subterranean formation using shrinkable fibers |
CN105003223B (en) * | 2014-04-24 | 2017-11-21 | 安东柏林石油科技(北京)有限公司 | A kind of method for insulating particle portability energy effectively improved after contact oil |
WO2016028414A1 (en) * | 2014-08-21 | 2016-02-25 | Exxonmobil Upstream Research Company | Bidirectional flow control device for facilitating stimulation treatments in a subterranean formation |
WO2017105475A1 (en) | 2015-12-18 | 2017-06-22 | Halliburton Energy Services, Inc. | Modified biopolymers for diversion, conformance, and fluid loss control |
CN110230489B (en) * | 2018-03-05 | 2023-07-14 | 中国石油化工股份有限公司 | Multi-section fracturing horizontal well liquid production profile testing equipment and method |
US11807700B2 (en) * | 2020-08-17 | 2023-11-07 | Saudi Arabian Oil Company | Electro-responsive hydrogel for reservoir and downhole application |
US11970656B2 (en) * | 2021-10-22 | 2024-04-30 | Halliburton Energy Services, Inc. | In-situ swelling polymer for wellbore barrier |
US12000278B2 (en) | 2021-12-16 | 2024-06-04 | Saudi Arabian Oil Company | Determining oil and water production rates in multiple production zones from a single production well |
US11867039B2 (en) * | 2022-01-07 | 2024-01-09 | Saudi Arabian Oil Company | Alternating microsphere and smartwater injection for enhanced oil recovery |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4532052A (en) * | 1978-09-28 | 1985-07-30 | Halliburton Company | Polymeric well treating method |
US5010953A (en) * | 1990-01-02 | 1991-04-30 | Texaco Inc. | Sand consolidation methods |
EP0933414A1 (en) * | 1998-01-30 | 1999-08-04 | Halliburton Energy Services, Inc. | Reducing the amount of water produced with hydrocarbons from wells |
US6105674A (en) * | 1998-02-05 | 2000-08-22 | Dresser Industries, Inc. | Composition and method for recovering lost circulation and sealing earth boreholes and cavities |
US6169058B1 (en) * | 1997-06-05 | 2001-01-02 | Bj Services Company | Compositions and methods for hydraulic fracturing |
US20040120847A1 (en) * | 2002-12-24 | 2004-06-24 | Willem Dijkhuizen | Reducing the corrosivity of water-containing oil-mixtures |
WO2004109053A2 (en) * | 2003-06-04 | 2004-12-16 | Sun Drilling Products Corporation | Lost circulation material blend offering high fluid loss with minimum solids |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4460627A (en) * | 1978-09-28 | 1984-07-17 | Halliburton Company | Polymeric well treating method |
US5260269A (en) * | 1989-10-12 | 1993-11-09 | Shell Oil Company | Method of drilling with shale stabilizing mud system comprising polycyclicpolyetherpolyol |
US5192615A (en) * | 1989-12-06 | 1993-03-09 | Exxon Research & Engineering Company | Composition comprising encapsulated substrate and thermoplastic polymer overcoating |
US5258123A (en) * | 1992-07-02 | 1993-11-02 | Exxon Production Research Company | Process for dewatering an aqueous solution containing solids using water-absorbent substances |
US5420174A (en) * | 1992-11-02 | 1995-05-30 | Halliburton Company | Method of producing coated proppants compatible with oxidizing gel breakers |
MY135121A (en) * | 2001-07-18 | 2008-02-29 | Shell Int Research | Wellbore system with annular seal member |
UA83655C2 (en) * | 2003-02-26 | 2008-08-11 | Ексонмобил Апстрим Рисерч Компани | Method for drilling and completing of wells |
US6976542B2 (en) * | 2003-10-03 | 2005-12-20 | Baker Hughes Incorporated | Mud flow back valve |
-
2007
- 2007-01-04 BR BRPI0707415-8A patent/BRPI0707415A2/en not_active IP Right Cessation
- 2007-01-04 WO PCT/US2007/000097 patent/WO2007094897A2/en active Application Filing
- 2007-01-04 EP EP07716256A patent/EP2004952A4/en not_active Withdrawn
- 2007-01-04 US US12/086,578 patent/US20100038086A1/en not_active Abandoned
- 2007-01-04 CN CNA2007800024127A patent/CN101529051A/en active Pending
- 2007-01-04 EA EA200870248A patent/EA014125B1/en not_active IP Right Cessation
- 2007-01-04 CA CA002636331A patent/CA2636331A1/en not_active Abandoned
- 2007-01-04 AU AU2007215547A patent/AU2007215547A1/en not_active Abandoned
- 2007-01-04 MX MX2008010008A patent/MX2008010008A/en not_active Application Discontinuation
-
2008
- 2008-07-28 NO NO20083319A patent/NO20083319L/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4532052A (en) * | 1978-09-28 | 1985-07-30 | Halliburton Company | Polymeric well treating method |
US5010953A (en) * | 1990-01-02 | 1991-04-30 | Texaco Inc. | Sand consolidation methods |
US6169058B1 (en) * | 1997-06-05 | 2001-01-02 | Bj Services Company | Compositions and methods for hydraulic fracturing |
EP0933414A1 (en) * | 1998-01-30 | 1999-08-04 | Halliburton Energy Services, Inc. | Reducing the amount of water produced with hydrocarbons from wells |
US6105674A (en) * | 1998-02-05 | 2000-08-22 | Dresser Industries, Inc. | Composition and method for recovering lost circulation and sealing earth boreholes and cavities |
US20040120847A1 (en) * | 2002-12-24 | 2004-06-24 | Willem Dijkhuizen | Reducing the corrosivity of water-containing oil-mixtures |
WO2004109053A2 (en) * | 2003-06-04 | 2004-12-16 | Sun Drilling Products Corporation | Lost circulation material blend offering high fluid loss with minimum solids |
Also Published As
Publication number | Publication date |
---|---|
WO2007094897A3 (en) | 2008-10-30 |
CN101529051A (en) | 2009-09-09 |
EA014125B1 (en) | 2010-10-29 |
EP2004952A2 (en) | 2008-12-24 |
MX2008010008A (en) | 2008-11-20 |
CA2636331A1 (en) | 2007-08-23 |
BRPI0707415A2 (en) | 2011-05-03 |
WO2007094897A2 (en) | 2007-08-23 |
NO20083319L (en) | 2008-10-29 |
AU2007215547A1 (en) | 2007-08-23 |
EA200870248A1 (en) | 2009-02-27 |
US20100038086A1 (en) | 2010-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20080908 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20101111 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C09K 8/60 20060101ALI20101105BHEP Ipc: C09K 8/575 20060101ALI20101105BHEP Ipc: C09K 8/508 20060101ALI20101105BHEP Ipc: C09K 8/512 20060101ALI20101105BHEP Ipc: C09K 8/80 20060101AFI20101105BHEP |
|
17Q | First examination report despatched |
Effective date: 20120117 |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20130801 |