ATE543109T1 - Zeitumkehr-reservoir-lokalisierung - Google Patents
Zeitumkehr-reservoir-lokalisierungInfo
- Publication number
- ATE543109T1 ATE543109T1 AT07849241T AT07849241T ATE543109T1 AT E543109 T1 ATE543109 T1 AT E543109T1 AT 07849241 T AT07849241 T AT 07849241T AT 07849241 T AT07849241 T AT 07849241T AT E543109 T1 ATE543109 T1 AT E543109T1
- Authority
- AT
- Austria
- Prior art keywords
- particle
- values
- sensors
- dynamic
- parameters
- Prior art date
Links
- 230000004807 localization Effects 0.000 title 1
- 239000002245 particle Substances 0.000 abstract 8
- 230000001360 synchronised effect Effects 0.000 abstract 4
- 238000005259 measurement Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/301—Analysis for determining seismic cross-sections or geostructures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/12—Signal generation
- G01V2210/123—Passive source, e.g. microseismics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/50—Corrections or adjustments related to wave propagation
- G01V2210/51—Migration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/67—Wave propagation modeling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/67—Wave propagation modeling
- G01V2210/679—Reverse-time modeling or coalescence modelling, i.e. starting from receivers
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US88588707P | 2007-01-20 | 2007-01-20 | |
| US89128607P | 2007-02-23 | 2007-02-23 | |
| US91128307P | 2007-04-12 | 2007-04-12 | |
| PCT/IB2007/054775 WO2008087505A2 (en) | 2007-01-20 | 2007-11-24 | Time reverse reservoir localization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE543109T1 true ATE543109T1 (de) | 2012-02-15 |
Family
ID=39636435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT07849241T ATE543109T1 (de) | 2007-01-20 | 2007-11-24 | Zeitumkehr-reservoir-lokalisierung |
Country Status (4)
| Country | Link |
|---|---|
| US (6) | US7675815B2 (de) |
| EP (1) | EP2104869B1 (de) |
| AT (1) | ATE543109T1 (de) |
| WO (1) | WO2008087505A2 (de) |
Families Citing this family (82)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2435215C2 (ru) | 2006-09-28 | 2011-11-27 | Эксонмобил Апстрим Рисерч Компани | Итеративная инверсия данных от одновременных геофизических источников |
| ATE543109T1 (de) * | 2007-01-20 | 2012-02-15 | Spectraseis Ag | Zeitumkehr-reservoir-lokalisierung |
| AU2008273868B2 (en) * | 2007-07-06 | 2013-05-16 | Schlumberger Technology B.V. | Methods and systems for processing microseismic data |
| US8547783B2 (en) * | 2007-12-12 | 2013-10-01 | Exxonmobil Upstream Research Company | Method and apparatus for evaluating submarine formations |
| NO2260331T3 (de) | 2008-03-21 | 2018-03-10 | ||
| AU2009282330B2 (en) * | 2008-08-11 | 2013-10-10 | Exxonmobil Upstream Research Company | Estimation of soil properties using waveforms of seismic surface waves |
| CN102272631B (zh) | 2009-01-09 | 2015-03-25 | 埃克森美孚上游研究公司 | 用被动地震数据的烃探测 |
| WO2010085493A1 (en) * | 2009-01-20 | 2010-07-29 | Spectraseis Ag | Time reverse imaging operators for source location |
| CA2750255A1 (en) * | 2009-01-20 | 2010-07-29 | Spectraseis Ag | Time reverse imaging attributes |
| WO2010085499A1 (en) | 2009-01-20 | 2010-07-29 | Spectraseis Ag | Image domain signal to noise estimate |
| US8374055B2 (en) * | 2009-06-19 | 2013-02-12 | The United States Of America, As Represented By The Secretary Of The Navy | Acoustic communication and locating devices for underground mines |
| US20110093203A1 (en) * | 2009-10-21 | 2011-04-21 | Chevron U.S.A. Inc. | System and method for clustering arrivals of seismic energy to enhance subsurface imaging |
| US20120116682A1 (en) * | 2009-12-15 | 2012-05-10 | Spectraseis Ag | Energy density and stress imaging conditions for source localization and characterization |
| US8537638B2 (en) * | 2010-02-10 | 2013-09-17 | Exxonmobil Upstream Research Company | Methods for subsurface parameter estimation in full wavefield inversion and reverse-time migration |
| US8223587B2 (en) * | 2010-03-29 | 2012-07-17 | Exxonmobil Upstream Research Company | Full wavefield inversion using time varying filters |
| US8694299B2 (en) | 2010-05-07 | 2014-04-08 | Exxonmobil Upstream Research Company | Artifact reduction in iterative inversion of geophysical data |
| US8756042B2 (en) | 2010-05-19 | 2014-06-17 | Exxonmobile Upstream Research Company | Method and system for checkpointing during simulations |
| FR2960304B1 (fr) | 2010-05-19 | 2012-09-14 | Cggveritas Services Sa | Procede de surveillance passive d'evenements sismiques |
| SG185364A1 (en) | 2010-06-02 | 2012-12-28 | Exxonmobil Upstream Res Co | Efficient computation of wave equation migration angle gathers |
| EP2459847A2 (de) * | 2010-06-10 | 2012-06-06 | Hipoint Reservoir Imaging | Reservoirkartierung mit frakturimpulssignal |
| US8359185B2 (en) * | 2010-06-30 | 2013-01-22 | Saudi Arabian Oil Company | Reservoir simulation of giant subsurface reservoirs with accelerated phase equilibrium determination |
| US8767508B2 (en) | 2010-08-18 | 2014-07-01 | Exxonmobil Upstream Research Company | Using seismic P and S arrivals to determine shallow velocity structure |
| KR101182839B1 (ko) * | 2010-08-26 | 2012-09-14 | 서울대학교산학협력단 | 송신원 추정을 통한 시간 영역 역시간 구조보정 방법 및 장치 |
| US8437998B2 (en) | 2010-09-27 | 2013-05-07 | Exxonmobil Upstream Research Company | Hybrid method for full waveform inversion using simultaneous and sequential source method |
| BR112013002842A2 (pt) | 2010-09-27 | 2016-06-07 | Exxonmobil Upstream Res Co | codificação de fonte e separação de fonte simultâneas como uma solução prática para inversão de campo de onda completa |
| US9110178B2 (en) * | 2010-11-12 | 2015-08-18 | Los Alamos National Security Llc | System and method for investigating sub-surface features of a rock formation with acoustic sources generating conical broadcast signals |
| CA2815054C (en) | 2010-12-01 | 2017-05-16 | Exxonmobil Upstream Research Company | Simultaneous source inversion for marine streamer data with cross-correlation objective function |
| US9046626B2 (en) | 2011-01-10 | 2015-06-02 | Westerngeco L.L.C. | Performing reverse time imaging of multicomponent acoustic and seismic data |
| US8437999B2 (en) | 2011-02-08 | 2013-05-07 | Saudi Arabian Oil Company | Seismic-scale reservoir simulation of giant subsurface reservoirs using GPU-accelerated linear equation systems |
| US8614930B2 (en) | 2011-03-23 | 2013-12-24 | Chevron U.S.A. Inc. | System and method for seismic data modeling and migration |
| AU2012233133B2 (en) | 2011-03-30 | 2014-11-20 | Exxonmobil Upstream Research Company | Convergence rate of full wavefield inversion using spectral shaping |
| CA2825469C (en) | 2011-03-31 | 2017-06-13 | Exxonmobil Upstream Research Company | Method of wavelet estimation and multiple prediction in full wavefield inversion |
| WO2012139082A1 (en) * | 2011-04-06 | 2012-10-11 | Spectraseis Ag | Event selection in the image domain |
| US9625593B2 (en) | 2011-04-26 | 2017-04-18 | Exxonmobil Upstream Research Company | Seismic data processing |
| WO2012160430A2 (en) * | 2011-05-24 | 2012-11-29 | Geco Technology B.V. | Data acquisition |
| US9291735B2 (en) | 2011-06-10 | 2016-03-22 | Globalfoundries Inc. | Probablistic subsurface modeling for improved drill control and real-time correction |
| US9291734B2 (en) | 2011-06-10 | 2016-03-22 | International Business Machines Corporation | Full waveform inversion using combined shot data and no scratch disk |
| US8983779B2 (en) | 2011-06-10 | 2015-03-17 | International Business Machines Corporation | RTM seismic imaging using incremental resolution methods |
| US9063248B2 (en) | 2011-06-10 | 2015-06-23 | International Business Machines Corporation | RTM seismic imaging using combined shot data |
| US20130003499A1 (en) * | 2011-06-28 | 2013-01-03 | King Abdulaziz City For Science And Technology | Interferometric method of enhancing passive seismic events |
| AU2012284393B2 (en) | 2011-07-19 | 2014-07-17 | Halliburton Energy Services, Inc. | System and method for moment tensor migration imaging |
| WO2013012496A1 (en) * | 2011-07-19 | 2013-01-24 | Conocophillips Company | Multiple frequency geophone strings |
| BR112014003509A2 (pt) * | 2011-08-17 | 2017-04-18 | Halliburton Energy Services Inc | método implementado por computador, equipamento e sistema |
| EP2751710B1 (de) | 2011-09-02 | 2017-08-02 | Exxonmobil Upstream Research Company | Verwendung von projektion auf konvexe datensätze zur begrenzung von full-wavefield-inversion |
| US9176930B2 (en) | 2011-11-29 | 2015-11-03 | Exxonmobil Upstream Research Company | Methods for approximating hessian times vector operation in full wavefield inversion |
| US9304215B2 (en) * | 2011-12-30 | 2016-04-05 | Landmark Graphics Corporation | Receiving seismic signals from seismic signal sources |
| WO2013116807A1 (en) | 2012-02-03 | 2013-08-08 | Los Alamos National Security, Llc | Systems and methods for synthetic aperture ultrasound tomography |
| WO2013116783A1 (en) | 2012-02-03 | 2013-08-08 | Los Alamos National Security, Llc | Windowed time-reversal music technique for super-resolution ultrasound imaging |
| RU2612896C2 (ru) | 2012-03-08 | 2017-03-13 | Эксонмобил Апстрим Рисерч Компани | Ортогональное кодирование источника и приемника |
| WO2014028030A1 (en) | 2012-08-17 | 2014-02-20 | Landmark Graphics Corporation | Systems and methods for imaging seismic data |
| MY178811A (en) | 2012-11-28 | 2020-10-20 | Exxonmobil Upstream Res Co | Reflection seismic data q tomography |
| US9121965B2 (en) | 2013-03-11 | 2015-09-01 | Saudi Arabian Oil Company | Low frequency passive seismic data acquisition and processing |
| CN104166157A (zh) * | 2013-05-16 | 2014-11-26 | 中国石油化工股份有限公司 | 基于特殊条件下炸药震源激发三分量接收的横波处理方法 |
| CA2909105C (en) | 2013-05-24 | 2018-08-28 | Ke Wang | Multi-parameter inversion through offset dependent elastic fwi |
| US10459117B2 (en) | 2013-06-03 | 2019-10-29 | Exxonmobil Upstream Research Company | Extended subspace method for cross-talk mitigation in multi-parameter inversion |
| US9702998B2 (en) | 2013-07-08 | 2017-07-11 | Exxonmobil Upstream Research Company | Full-wavefield inversion of primaries and multiples in marine environment |
| CA2913496C (en) | 2013-08-23 | 2018-08-14 | Exxonmobil Upstream Research Company | Simultaneous sourcing during both seismic acquisition and seismic inversion |
| US10036818B2 (en) | 2013-09-06 | 2018-07-31 | Exxonmobil Upstream Research Company | Accelerating full wavefield inversion with nonstationary point-spread functions |
| US9910189B2 (en) | 2014-04-09 | 2018-03-06 | Exxonmobil Upstream Research Company | Method for fast line search in frequency domain FWI |
| WO2015171215A1 (en) | 2014-05-09 | 2015-11-12 | Exxonmobil Upstream Research Company | Efficient line search methods for multi-parameter full wavefield inversion |
| US10185046B2 (en) | 2014-06-09 | 2019-01-22 | Exxonmobil Upstream Research Company | Method for temporal dispersion correction for seismic simulation, RTM and FWI |
| CN106662664A (zh) | 2014-06-17 | 2017-05-10 | 埃克森美孚上游研究公司 | 快速粘声波和粘弹性全波场反演 |
| US10838092B2 (en) | 2014-07-24 | 2020-11-17 | Exxonmobil Upstream Research Company | Estimating multiple subsurface parameters by cascaded inversion of wavefield components |
| US10422899B2 (en) | 2014-07-30 | 2019-09-24 | Exxonmobil Upstream Research Company | Harmonic encoding for FWI |
| US9921324B2 (en) | 2014-08-13 | 2018-03-20 | Chevron U.S.A. Inc. | Systems and methods employing upward beam propagation for target-oriented seismic imaging |
| US10386511B2 (en) | 2014-10-03 | 2019-08-20 | Exxonmobil Upstream Research Company | Seismic survey design using full wavefield inversion |
| CA2961572C (en) | 2014-10-20 | 2019-07-02 | Exxonmobil Upstream Research Company | Velocity tomography using property scans |
| US9829592B2 (en) | 2014-12-16 | 2017-11-28 | Pgs Geophysical As | Seismic imaging with visco-acoustic reverse-time migration using pseudo-analytical method |
| AU2015363241A1 (en) | 2014-12-18 | 2017-06-29 | Exxonmobil Upstream Research Company | Scalable scheduling of parallel iterative seismic jobs |
| US10520618B2 (en) | 2015-02-04 | 2019-12-31 | ExxohnMobil Upstream Research Company | Poynting vector minimal reflection boundary conditions |
| SG11201704620WA (en) | 2015-02-13 | 2017-09-28 | Exxonmobil Upstream Res Co | Efficient and stable absorbing boundary condition in finite-difference calculations |
| RU2017132164A (ru) | 2015-02-17 | 2019-03-18 | Эксонмобил Апстрим Рисерч Компани | Многоэтапный процесс инверсии полного волнового поля, при выполнении которого образуют массив свободных от многократных волн данных |
| CN104656135B (zh) * | 2015-03-11 | 2017-09-01 | 中国电建集团北京勘测设计研究院有限公司 | 一种地震剪切波的准确判别方法和系统 |
| US20160298427A1 (en) | 2015-04-09 | 2016-10-13 | Schlumberger Technology Corporation | Continuum sedimentary basin modeling using particle dynamics simulations |
| WO2016195774A1 (en) | 2015-06-04 | 2016-12-08 | Exxonmobil Upstream Research Company | Method for generating multiple free seismic images |
| US10838093B2 (en) | 2015-07-02 | 2020-11-17 | Exxonmobil Upstream Research Company | Krylov-space-based quasi-newton preconditioner for full-wavefield inversion |
| CN108139499B (zh) | 2015-10-02 | 2020-02-14 | 埃克森美孚上游研究公司 | Q-补偿的全波场反演 |
| KR102021276B1 (ko) | 2015-10-15 | 2019-09-16 | 엑손모빌 업스트림 리서치 캄파니 | 진폭 보존을 갖는 fwi 모델 도메인 각도 스택들 |
| JP6672977B2 (ja) * | 2016-04-19 | 2020-03-25 | 株式会社大林組 | 地盤推定方法 |
| US10768324B2 (en) | 2016-05-19 | 2020-09-08 | Exxonmobil Upstream Research Company | Method to predict pore pressure and seal integrity using full wavefield inversion |
| US11885921B2 (en) * | 2017-12-26 | 2024-01-30 | Ramot At Tel-Aviv University Ltd. | Real-time array-based seismic source location |
| CN110109177B (zh) * | 2019-06-05 | 2020-07-28 | 吉林大学 | 基于旋转时空双变网格有限差分法的地震波正演模拟方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161127A (en) | 1989-11-02 | 1992-11-03 | Rheinmetall Gmbh | Method of determining the target direction and target range of sound generating targets |
| JPH03205587A (ja) | 1990-01-06 | 1991-09-09 | Yuuseishiyou Tsushin Sogo Kenkyusho | 火山性微動の相互相関による発生領域の決定法 |
| US5274605A (en) * | 1992-06-26 | 1993-12-28 | Chevron Research And Technology Company | Depth migration method using Gaussian beams |
| US5377104A (en) | 1993-07-23 | 1994-12-27 | Teledyne Industries, Inc. | Passive seismic imaging for real time management and verification of hydraulic fracturing and of geologic containment of hazardous wastes injected into hydraulic fractures |
| US5771170A (en) * | 1994-02-14 | 1998-06-23 | Atlantic Richfield Company | System and program for locating seismic events during earth fracture propagation |
| US5504678A (en) * | 1994-06-03 | 1996-04-02 | Exxon Production Research Company | Method for seismic data processing using depth slice decomposition |
| FR2737909B1 (fr) * | 1995-08-14 | 1997-10-03 | Elf Aquitaine | Methode pour representer dans un domaine spatio-temporel la trajectoire d'au moins un puits de forage |
| US5805098A (en) | 1996-11-01 | 1998-09-08 | The United States Of America As Represented By The Secretary Of The Army | Method and system for forming image by backprojection |
| US5999488A (en) * | 1998-04-27 | 1999-12-07 | Phillips Petroleum Company | Method and apparatus for migration by finite differences |
| US6529833B2 (en) * | 1998-12-30 | 2003-03-04 | Baker Hughes Incorporated | Reservoir monitoring in a laminated reservoir using 4-D time lapse data and multicomponent induction data |
| US6442489B1 (en) | 1999-08-02 | 2002-08-27 | Edward Gendelman | Method for detection and monitoring of hydrocarbons |
| US6466873B2 (en) | 2000-12-18 | 2002-10-15 | Pgs Americas, Inc. | Method of extended recursive f-k migration |
| EP1423735B1 (de) | 2001-09-07 | 2010-08-18 | Shell Internationale Research Maatschappij B.V. | Seismisches abbilden einer formation unter der oberfläche mittels virtueller quellen |
| US6934219B2 (en) * | 2002-04-24 | 2005-08-23 | Ascend Geo, Llc | Methods and systems for acquiring seismic data |
| US6625543B1 (en) * | 2002-09-05 | 2003-09-23 | 3Dgeo Development, Inc. | Output based azimuth moveout re-gridding of seismic data |
| FR2845484B1 (fr) | 2002-10-08 | 2005-03-11 | Inst Francais Du Petrole | Methode de separation de signaux de microsismicite de signaux sismiques emis par une ou plusieurs sources |
| US6996470B2 (en) * | 2003-08-01 | 2006-02-07 | Moac Llc | Systems and methods for geophysical imaging using amorphous computational processing |
| WO2005019864A2 (en) * | 2003-08-11 | 2005-03-03 | Exxonmobil Upstream Research Company | Phase control of seismic data |
| US6985816B2 (en) * | 2003-09-15 | 2006-01-10 | Pinnacle Technologies, Inc. | Methods and systems for determining the orientation of natural fractures |
| US7046581B2 (en) | 2003-12-01 | 2006-05-16 | Shell Oil Company | Well-to-well tomography |
| US7082368B2 (en) * | 2004-06-04 | 2006-07-25 | Schlumberger Technology Corporation | Seismic event correlation and Vp-Vs estimation |
| US7088639B2 (en) * | 2004-11-17 | 2006-08-08 | Rdsp I L.P. | Method for determining formation quality factor from well log data and its application to seismic reservoir characterization |
| US8041510B2 (en) * | 2005-11-03 | 2011-10-18 | Saudi Arabian Oil Company | Continuous reservoir monitoring for fluid pathways using microseismic data |
| US7830747B2 (en) * | 2006-11-01 | 2010-11-09 | Pgs Geophysical As | Method for multi-azimuth prestack time migration for general heterogeneous, anisotropic media |
| ATE543109T1 (de) * | 2007-01-20 | 2012-02-15 | Spectraseis Ag | Zeitumkehr-reservoir-lokalisierung |
| EP2150841A1 (de) * | 2007-05-17 | 2010-02-10 | Spectraseis AG | Seismische attribute für die reservoirlokalisierung |
-
2007
- 2007-11-24 AT AT07849241T patent/ATE543109T1/de active
- 2007-11-24 WO PCT/IB2007/054775 patent/WO2008087505A2/en not_active Ceased
- 2007-11-24 EP EP07849241A patent/EP2104869B1/de not_active Not-in-force
-
2008
- 2008-01-22 US US12/017,527 patent/US7675815B2/en active Active
-
2010
- 2010-03-07 US US12/718,979 patent/US20100161233A1/en not_active Abandoned
- 2010-03-09 US US12/719,885 patent/US20100161234A1/en not_active Abandoned
- 2010-03-09 US US12/719,984 patent/US8068384B2/en active Active
-
2011
- 2011-09-25 US US13/244,601 patent/US8179740B2/en not_active Expired - Fee Related
- 2011-09-25 US US13/244,615 patent/US8451685B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US20100161234A1 (en) | 2010-06-24 |
| US8451685B2 (en) | 2013-05-28 |
| US20100157732A1 (en) | 2010-06-24 |
| US20120014216A1 (en) | 2012-01-19 |
| WO2008087505A2 (en) | 2008-07-24 |
| EP2104869A2 (de) | 2009-09-30 |
| US7675815B2 (en) | 2010-03-09 |
| US20100161233A1 (en) | 2010-06-24 |
| WO2008087505A3 (en) | 2010-06-17 |
| US20120014215A1 (en) | 2012-01-19 |
| US20080175101A1 (en) | 2008-07-24 |
| EP2104869B1 (de) | 2012-01-25 |
| US8068384B2 (en) | 2011-11-29 |
| US8179740B2 (en) | 2012-05-15 |
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