WO2009043055A3 - System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations - Google Patents
System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations Download PDFInfo
- Publication number
- WO2009043055A3 WO2009043055A3 PCT/US2008/078201 US2008078201W WO2009043055A3 WO 2009043055 A3 WO2009043055 A3 WO 2009043055A3 US 2008078201 W US2008078201 W US 2008078201W WO 2009043055 A3 WO2009043055 A3 WO 2009043055A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrocarbon
- bearing rock
- radio frequency
- rock
- formation
- Prior art date
Links
- 229930195733 hydrocarbon Natural products 0.000 title abstract 10
- 150000002430 hydrocarbons Chemical class 0.000 title abstract 10
- 230000015572 biosynthetic process Effects 0.000 title abstract 5
- 238000011065 in-situ storage Methods 0.000 title abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title 1
- 229910052799 carbon Inorganic materials 0.000 title 1
- 238000000605 extraction Methods 0.000 title 1
- 238000005755 formation reaction Methods 0.000 title 1
- 238000010438 heat treatment Methods 0.000 title 1
- 239000011435 rock Substances 0.000 abstract 10
- 239000004215 Carbon black (E152) Substances 0.000 abstract 8
- 238000005094 computer simulation Methods 0.000 abstract 3
- 238000004088 simulation Methods 0.000 abstract 2
- 150000001722 carbon compounds Chemical class 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/2401—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection by means of electricity
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A method of producing liquid hydrocarbons from a hydrocarbon-bearing rock in situ in a geological formation begins with exploring the formation by drilling a plurality of boreholes into the formation and taking core samples of the hydrocarbon-bearing rock and at least one overburden layer. Electrical parameters of the hydrocarbon-bearing rock and the overburden layer are determined, as well as a roughness of a boundary between the hydrocarbon-bearing rock and the at least one overburden layer. These electrical parameters are used to construct a computer model of a portion of the hydrocarbon- bearing rock and at least one overburden layer, the computer model based upon modeling the formation as a rough-walled waveguide. This computer model is used to simulate propagation of radio frequency energy within the hydrocarbon-bearing rock, including simulation of radio frequency wave confinement within the hydrocarbon-bearing rock, at several frequencies and temperatures. A frequency for retorting is selected based upon simulation results. Radio frequency couplers are installed into at least one borehole in the hydrocarbon-bearing rock and driven with radio frequency energy to heat the hydrocarbon-bearing rock. As the rock heats, it releases carbon compounds and these are collected.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US97631407P | 2007-09-28 | 2007-09-28 | |
US60/976,314 | 2007-09-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009043055A2 WO2009043055A2 (en) | 2009-04-02 |
WO2009043055A3 true WO2009043055A3 (en) | 2010-12-16 |
Family
ID=40512133
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/078201 WO2009043055A2 (en) | 2007-09-28 | 2008-09-29 | System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations |
Country Status (2)
Country | Link |
---|---|
US (1) | US20090242196A1 (en) |
WO (1) | WO2009043055A2 (en) |
Families Citing this family (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8494775B2 (en) * | 2009-03-02 | 2013-07-23 | Harris Corporation | Reflectometry real time remote sensing for in situ hydrocarbon processing |
US8887810B2 (en) | 2009-03-02 | 2014-11-18 | Harris Corporation | In situ loop antenna arrays for subsurface hydrocarbon heating |
US9034176B2 (en) | 2009-03-02 | 2015-05-19 | Harris Corporation | Radio frequency heating of petroleum ore by particle susceptors |
US8101068B2 (en) | 2009-03-02 | 2012-01-24 | Harris Corporation | Constant specific gravity heat minimization |
US8128786B2 (en) | 2009-03-02 | 2012-03-06 | Harris Corporation | RF heating to reduce the use of supplemental water added in the recovery of unconventional oil |
US8133384B2 (en) * | 2009-03-02 | 2012-03-13 | Harris Corporation | Carbon strand radio frequency heating susceptor |
US8120369B2 (en) | 2009-03-02 | 2012-02-21 | Harris Corporation | Dielectric characterization of bituminous froth |
US8729440B2 (en) | 2009-03-02 | 2014-05-20 | Harris Corporation | Applicator and method for RF heating of material |
US8674274B2 (en) | 2009-03-02 | 2014-03-18 | Harris Corporation | Apparatus and method for heating material by adjustable mode RF heating antenna array |
US20110186295A1 (en) * | 2010-01-29 | 2011-08-04 | Kaminsky Robert D | Recovery of Hydrocarbons Using Artificial Topseals |
US8695702B2 (en) | 2010-06-22 | 2014-04-15 | Harris Corporation | Diaxial power transmission line for continuous dipole antenna |
US8648760B2 (en) | 2010-06-22 | 2014-02-11 | Harris Corporation | Continuous dipole antenna |
US8450664B2 (en) | 2010-07-13 | 2013-05-28 | Harris Corporation | Radio frequency heating fork |
US8763691B2 (en) | 2010-07-20 | 2014-07-01 | Harris Corporation | Apparatus and method for heating of hydrocarbon deposits by axial RF coupler |
US8772683B2 (en) | 2010-09-09 | 2014-07-08 | Harris Corporation | Apparatus and method for heating of hydrocarbon deposits by RF driven coaxial sleeve |
US8692170B2 (en) | 2010-09-15 | 2014-04-08 | Harris Corporation | Litz heating antenna |
US8646527B2 (en) | 2010-09-20 | 2014-02-11 | Harris Corporation | Radio frequency enhanced steam assisted gravity drainage method for recovery of hydrocarbons |
US8789599B2 (en) | 2010-09-20 | 2014-07-29 | Harris Corporation | Radio frequency heat applicator for increased heavy oil recovery |
US8511378B2 (en) * | 2010-09-29 | 2013-08-20 | Harris Corporation | Control system for extraction of hydrocarbons from underground deposits |
US8373516B2 (en) | 2010-10-13 | 2013-02-12 | Harris Corporation | Waveguide matching unit having gyrator |
US8616273B2 (en) | 2010-11-17 | 2013-12-31 | Harris Corporation | Effective solvent extraction system incorporating electromagnetic heating |
CA2957909C (en) * | 2010-11-17 | 2017-09-12 | Harris Corporation | Effective solvent extraction system incorporating electromagnetic heating |
US8443887B2 (en) | 2010-11-19 | 2013-05-21 | Harris Corporation | Twinaxial linear induction antenna array for increased heavy oil recovery |
US8453739B2 (en) | 2010-11-19 | 2013-06-04 | Harris Corporation | Triaxial linear induction antenna array for increased heavy oil recovery |
US9033033B2 (en) | 2010-12-21 | 2015-05-19 | Chevron U.S.A. Inc. | Electrokinetic enhanced hydrocarbon recovery from oil shale |
US9133398B2 (en) | 2010-12-22 | 2015-09-15 | Chevron U.S.A. Inc. | In-situ kerogen conversion and recycling |
US8877041B2 (en) | 2011-04-04 | 2014-11-04 | Harris Corporation | Hydrocarbon cracking antenna |
US8701760B2 (en) | 2011-06-17 | 2014-04-22 | Harris Corporation | Electromagnetic heat treatment providing enhanced oil recovery |
US9322254B2 (en) * | 2011-10-19 | 2016-04-26 | Harris Corporation | Method for hydrocarbon recovery using heated liquid water injection with RF heating |
WO2013082636A1 (en) * | 2011-11-29 | 2013-06-06 | HAHN, Ilse, Renate | Exploitation of carbonaceous deposits |
CA2858853C (en) * | 2011-12-14 | 2017-01-24 | Harris Corporation | In situ rf heating of stacked pay zones |
US9181467B2 (en) | 2011-12-22 | 2015-11-10 | Uchicago Argonne, Llc | Preparation and use of nano-catalysts for in-situ reaction with kerogen |
US8701788B2 (en) | 2011-12-22 | 2014-04-22 | Chevron U.S.A. Inc. | Preconditioning a subsurface shale formation by removing extractible organics |
US8851177B2 (en) | 2011-12-22 | 2014-10-07 | Chevron U.S.A. Inc. | In-situ kerogen conversion and oxidant regeneration |
US8992771B2 (en) | 2012-05-25 | 2015-03-31 | Chevron U.S.A. Inc. | Isolating lubricating oils from subsurface shale formations |
US9057237B2 (en) | 2012-07-13 | 2015-06-16 | Harris Corporation | Method for recovering a hydrocarbon resource from a subterranean formation including additional upgrading at the wellhead and related apparatus |
US9103205B2 (en) * | 2012-07-13 | 2015-08-11 | Harris Corporation | Method of recovering hydrocarbon resources while injecting a solvent and supplying radio frequency power and related apparatus |
US9044731B2 (en) | 2012-07-13 | 2015-06-02 | Harris Corporation | Radio frequency hydrocarbon resource upgrading apparatus including parallel paths and related methods |
US9200506B2 (en) | 2012-07-13 | 2015-12-01 | Harris Corporation | Apparatus for transporting and upgrading a hydrocarbon resource through a pipeline and related methods |
US10161233B2 (en) | 2012-07-13 | 2018-12-25 | Harris Corporation | Method of upgrading and recovering a hydrocarbon resource for pipeline transport and related system |
US9922145B2 (en) * | 2012-08-17 | 2018-03-20 | Schlumberger Technology Corporation | Wide frequency range modeling of electromagnetic heating for heavy oil recovery |
US9303499B2 (en) | 2012-10-18 | 2016-04-05 | Elwha Llc | Systems and methods for enhancing recovery of hydrocarbon deposits |
US9157304B2 (en) * | 2012-12-03 | 2015-10-13 | Harris Corporation | Hydrocarbon resource recovery system including RF transmission line extending alongside a well pipe in a wellbore and related methods |
US9194221B2 (en) * | 2013-02-13 | 2015-11-24 | Harris Corporation | Apparatus for heating hydrocarbons with RF antenna assembly having segmented dipole elements and related methods |
US9309757B2 (en) * | 2013-02-21 | 2016-04-12 | Harris Corporation | Radio frequency antenna assembly for hydrocarbon resource recovery including adjustable shorting plug and related methods |
CA2875485C (en) * | 2014-01-08 | 2017-08-22 | Husky Oil Operations Limited | Method of subsurface reservoir fracturing using electromagnetic pulse energy |
US9890624B2 (en) * | 2014-02-28 | 2018-02-13 | Eclipse Ior Services, Llc | Systems and methods for the treatment of oil and/or gas wells with a polymeric material |
US9890625B2 (en) * | 2014-02-28 | 2018-02-13 | Eclipse Ior Services, Llc | Systems and methods for the treatment of oil and/or gas wells with an obstruction material |
CA2957518C (en) | 2014-08-11 | 2023-03-21 | Eni S.P.A. | Coaxially arranged mode converters |
CN106605037B (en) | 2014-08-11 | 2019-06-28 | 艾尼股份公司 | Radio frequency (RF) system of recycling for hydrocarbon |
US10067257B2 (en) | 2014-08-18 | 2018-09-04 | Schlumberger Technology Corporation | Multi-frequency electromagnetic tensor measurements |
US10386529B2 (en) * | 2014-11-19 | 2019-08-20 | Schlumberger Technology Corporation | Subsurface estimation of level of organic maturity |
US10053959B2 (en) | 2015-05-05 | 2018-08-21 | Saudi Arabian Oil Company | System and method for condensate blockage removal with ceramic material and microwaves |
WO2017177319A1 (en) | 2016-04-13 | 2017-10-19 | Acceleware Ltd. | Apparatus and methods for electromagnetic heating of hydrocarbon formations |
US10920556B2 (en) | 2016-08-22 | 2021-02-16 | Saudi Arabian Oil Comoanv | Using radio waves to fracture rocks in a hydrocarbon reservoir |
CN108222908B (en) * | 2017-12-26 | 2020-09-04 | 中国石油天然气股份有限公司 | Method and device for determining combustion data in fireflood process |
US10669829B2 (en) | 2018-03-20 | 2020-06-02 | Saudi Arabian Oil Company | Using electromagnetic waves to remove near wellbore damages in a hydrocarbon reservoir |
US11319478B2 (en) | 2019-07-24 | 2022-05-03 | Saudi Arabian Oil Company | Oxidizing gasses for carbon dioxide-based fracturing fluids |
US11492541B2 (en) | 2019-07-24 | 2022-11-08 | Saudi Arabian Oil Company | Organic salts of oxidizing anions as energetic materials |
WO2021138355A1 (en) | 2019-12-31 | 2021-07-08 | Saudi Arabian Oil Company | Viscoelastic-surfactant fracturing fluids having oxidizer |
US11339321B2 (en) | 2019-12-31 | 2022-05-24 | Saudi Arabian Oil Company | Reactive hydraulic fracturing fluid |
US11352548B2 (en) | 2019-12-31 | 2022-06-07 | Saudi Arabian Oil Company | Viscoelastic-surfactant treatment fluids having oxidizer |
US11268373B2 (en) | 2020-01-17 | 2022-03-08 | Saudi Arabian Oil Company | Estimating natural fracture properties based on production from hydraulically fractured wells |
US11473009B2 (en) | 2020-01-17 | 2022-10-18 | Saudi Arabian Oil Company | Delivery of halogens to a subterranean formation |
US11473001B2 (en) | 2020-01-17 | 2022-10-18 | Saudi Arabian Oil Company | Delivery of halogens to a subterranean formation |
US11365344B2 (en) | 2020-01-17 | 2022-06-21 | Saudi Arabian Oil Company | Delivery of halogens to a subterranean formation |
WO2021212210A1 (en) | 2020-04-24 | 2021-10-28 | Acceleware Ltd. | Systems and methods for controlling electromagnetic heating of a hydrocarbon medium |
US11578263B2 (en) | 2020-05-12 | 2023-02-14 | Saudi Arabian Oil Company | Ceramic-coated proppant |
US11643924B2 (en) | 2020-08-20 | 2023-05-09 | Saudi Arabian Oil Company | Determining matrix permeability of subsurface formations |
US11326092B2 (en) | 2020-08-24 | 2022-05-10 | Saudi Arabian Oil Company | High temperature cross-linked fracturing fluids with reduced friction |
US11542815B2 (en) | 2020-11-30 | 2023-01-03 | Saudi Arabian Oil Company | Determining effect of oxidative hydraulic fracturing |
US11680887B1 (en) | 2021-12-01 | 2023-06-20 | Saudi Arabian Oil Company | Determining rock properties |
CN115773107B (en) * | 2023-02-13 | 2024-04-19 | 中国石油大学(北京) | Underground radio frequency heating oil displacement test device for thickened oil exploitation |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140180A (en) * | 1977-08-29 | 1979-02-20 | Iit Research Institute | Method for in situ heat processing of hydrocarbonaceous formations |
US4275787A (en) * | 1978-07-31 | 1981-06-30 | Prakla - Seismos Gmbh | Method for monitoring subsurface combustion and gasification processes in coal seams |
US4705108A (en) * | 1986-05-27 | 1987-11-10 | The United States Of America As Represented By The United States Department Of Energy | Method for in situ heating of hydrocarbonaceous formations |
US20030014190A1 (en) * | 1997-01-24 | 2003-01-16 | Baker Hughes Incorporated | Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries |
US20070289736A1 (en) * | 2006-05-30 | 2007-12-20 | Kearl Peter M | Microwave process for intrinsic permeability enhancement and hydrocarbon extraction from subsurface deposits |
US20080073079A1 (en) * | 2006-09-26 | 2008-03-27 | Hw Advanced Technologies, Inc. | Stimulation and recovery of heavy hydrocarbon fluids |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1095400A (en) * | 1976-05-03 | 1981-02-10 | Howard J. Rowland | In situ processing of organic ore bodies |
US4196329A (en) * | 1976-05-03 | 1980-04-01 | Raytheon Company | Situ processing of organic ore bodies |
US4487257A (en) * | 1976-06-17 | 1984-12-11 | Raytheon Company | Apparatus and method for production of organic products from kerogen |
US4301865A (en) * | 1977-01-03 | 1981-11-24 | Raytheon Company | In situ radio frequency selective heating process and system |
US4140179A (en) * | 1977-01-03 | 1979-02-20 | Raytheon Company | In situ radio frequency selective heating process |
US4320801A (en) * | 1977-09-30 | 1982-03-23 | Raytheon Company | In situ processing of organic ore bodies |
US4457365A (en) * | 1978-12-07 | 1984-07-03 | Raytheon Company | In situ radio frequency selective heating system |
US4508168A (en) * | 1980-06-30 | 1985-04-02 | Raytheon Company | RF Applicator for in situ heating |
US4583589A (en) * | 1981-10-22 | 1986-04-22 | Raytheon Company | Subsurface radiating dipole |
US4485869A (en) * | 1982-10-22 | 1984-12-04 | Iit Research Institute | Recovery of liquid hydrocarbons from oil shale by electromagnetic heating in situ |
BG45028A1 (en) * | 1987-03-12 | 1989-03-15 | Mircho S Tabakov | |
US20030146002A1 (en) * | 2001-04-24 | 2003-08-07 | Vinegar Harold J. | Removable heat sources for in situ thermal processing of an oil shale formation |
WO2003036033A1 (en) * | 2001-10-24 | 2003-05-01 | Shell Internationale Research Maatschappij B.V. | Simulation of in situ recovery from a hydrocarbon containing formation |
US7091460B2 (en) * | 2004-03-15 | 2006-08-15 | Dwight Eric Kinzer | In situ processing of hydrocarbon-bearing formations with variable frequency automated capacitive radio frequency dielectric heating |
-
2008
- 2008-09-29 US US12/240,954 patent/US20090242196A1/en not_active Abandoned
- 2008-09-29 WO PCT/US2008/078201 patent/WO2009043055A2/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140180A (en) * | 1977-08-29 | 1979-02-20 | Iit Research Institute | Method for in situ heat processing of hydrocarbonaceous formations |
US4275787A (en) * | 1978-07-31 | 1981-06-30 | Prakla - Seismos Gmbh | Method for monitoring subsurface combustion and gasification processes in coal seams |
US4705108A (en) * | 1986-05-27 | 1987-11-10 | The United States Of America As Represented By The United States Department Of Energy | Method for in situ heating of hydrocarbonaceous formations |
US20030014190A1 (en) * | 1997-01-24 | 2003-01-16 | Baker Hughes Incorporated | Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries |
US20070289736A1 (en) * | 2006-05-30 | 2007-12-20 | Kearl Peter M | Microwave process for intrinsic permeability enhancement and hydrocarbon extraction from subsurface deposits |
US20080073079A1 (en) * | 2006-09-26 | 2008-03-27 | Hw Advanced Technologies, Inc. | Stimulation and recovery of heavy hydrocarbon fluids |
Non-Patent Citations (1)
Title |
---|
KOVALEVA L A ET AL: "Mathematical modeling of high-frequency electromagnetic heating of the bottom-hole area of horizontal oil wells", JOURNAL OF ENGINEERING PHYSICS AND THERMOPHYSICS, KLUWER ACADEMIC PUBLISHERS-PLENUM PUBLISHERS, NE LNKD- DOI:10.1007/S10891-005-0013-X, vol. 77, no. 6, 1 November 2004 (2004-11-01), pages 1184 - 1191, XP019221516, ISSN: 1573-871X * |
Also Published As
Publication number | Publication date |
---|---|
US20090242196A1 (en) | 2009-10-01 |
WO2009043055A2 (en) | 2009-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009043055A3 (en) | System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations | |
Al-Jubori et al. | Coalbed methane: clean energy for the world | |
Hofmann et al. | Hot water generation for oil sands processing from enhanced geothermal systems: Process simulation for different hydraulic fracturing scenarios | |
Shoaib et al. | CO2 flooding the Elm Coulee field | |
Mukhametshina et al. | Electromagnetic heating of heavy oil and bitumen: a review of experimental studies and field applications | |
US20120325458A1 (en) | Electrically Conductive Methods For In Situ Pyrolysis of Organic-Rich Rock Formations | |
US20110272153A1 (en) | Method and System For Enhancing A Recovery Process Employing One or More Horizontal Wellbores | |
WO2008048454A3 (en) | Combined development of oil shale by in situ heating with a deeper hydrocarbon resource | |
Hoffman et al. | CO2 flooding to increase recovery for unconventional liquids-rich reservoirs | |
Egboga et al. | A feasibility study of thermal stimulation in unconventional shale reservoirs | |
CA2812801A1 (en) | Method and system for fracturing a formation | |
CA2814750A1 (en) | Methods for establishing a subsurface fracture network | |
US20130292114A1 (en) | Methods For Containment and Improved Recovery in Heated Hydrocarbon Containing Formations By Optimal Placement of Fractures and Production Wells | |
Tewari et al. | Successful cyclic steam stimulation pilot in heavy oilfield of Sudan | |
Tamer et al. | Impact of different sagd well configurations (dover sagd phase b case study) | |
CA2841792A1 (en) | Method for hydrocarbon recovery using sagd and infill wells with rf heating | |
Langedijk et al. | Optimization of hydraulic fracturing in a deep, multilayered, gas-condensate reservoir | |
Yang et al. | Vertical-well-assisted SAGD dilation process in heterogeneous super-heavy oil reservoirs: Numerical simulations | |
Xue et al. | Analysis of thermal stimulation to enhance shale gas recovery through a novel conceptual model | |
Mohammadpoor et al. | An extensive review on the effective sequence of heavy oil recovery | |
Chang et al. | Numerical simulation of steam-assisted gravity drainage with vertical slimholes | |
Dai et al. | CO2 flooding in shale oil reservoir with radial borehole fracturing for CO2 storage and enhanced oil recovery | |
Hocking et al. | Single-well SAGD: overcoming permeable lean zones and barriers | |
Zhu et al. | Ultra heavy oil production experience in China | |
Tavallali et al. | Evaluation of new well configurations for SAGD in Athabasca McMurray formation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08833802 Country of ref document: EP Kind code of ref document: A2 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08833802 Country of ref document: EP Kind code of ref document: A2 |