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Volume 64, Issue 5
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

Time‐lapse refraction can provide complementary seismic solutions for monitoring subtle subsurface changes that are challenging for conventional P‐wave reflection methods. The utilization of refraction time lapse has lagged behind in the past partly due to the lack of robust techniques that allow extracting easy‐to‐interpret reservoir information. However, with the recent emergence of the full‐waveform inversion technique as a more standard tool, we find it to be a promising platform for incorporating head waves and diving waves into the time‐lapse framework. Here we investigate the sensitivity of 2D acoustic, time‐domain, full‐waveform inversion for monitoring a shallow, weak velocity change (−30 m/s, or −1.6%). The sensitivity tests are designed to address questions related to the feasibility and accuracy of full‐waveform inversion results for monitoring the field case of an underground gas blowout that occurred in the North Sea. The blowout caused the gas to migrate both vertically and horizontally into several shallow sand layers. Some of the shallow gas anomalies were not clearly detected by conventional 4D reflection methods (i.e., time shifts and amplitude difference) due to low 4D signal‐to‐noise ratio and weak velocity change. On the other hand, full‐waveform inversion sensitivity analysis showed that it is possible to detect the weak velocity change with the non‐optimal seismic input. Detectability was qualitative with variable degrees of accuracy depending on different inversion parameters. We inverted, the real 2D seismic data from the North Sea with a greater emphasis on refracted and diving waves’ energy (i.e., most of the reflected energy was removed for the shallow zone of interest after removing traces with offset less than 300 m). The full‐waveform inversion results provided more superior detectability compared with the conventional 4D stacked reflection difference method for a weak shallow gas anomaly (320 m deep).

© 2016 European Association of Geoscientists & Engineers © 2016 European Association of Geoscientists & Engineers
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/content/journals/10.1111/1365-2478.12251
2016-06-22
2024-04-19

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References

  1. ArtolaF.A.V., AlvaradoV. and FigueiroW.2008. Time‐lapse critical reflection: does it really work in seismic monitoring of low porosity and high effective stress conditions? Revista Brasileira de Geofisica, 26, 327–330.
     [Google Scholar]
  2. AsnaashariA., BrossierR., GaramboisS., AudebertF., ThoreP. and VirieuxJ.2012. Time‐lapse imaging using regularized FWI: a robustness study. 82nd SEG international meeting, Expanded Abstracts.
  3. AsnaashariA., BrossierR., GaramboisS., AudebertF. and ThoreP.2013. Regularized seismic full waveform inversion with prior model information. Geophysics78(2), R25–R36.
     [Google Scholar]
  4. BagainiC.2006. Enhancing the low‐frequency content of Vibroseis data. 75th SEG international meeting, Expanded Abstracts, 75–79.
  5. BerkhoutA. and VerschuurD.J.2006. Imaging of multiple reflections. Geophysics71(6), A55–A59.
     [Google Scholar]
  6. BrossierR., OpertoS. and VirieuxJ.2009. Seismic imaging of complex onshore structures by 2D elastic frequency‐domain full‐waveform inversion. Geophysics74, 105–118.
     [Google Scholar]
  7. BunksC., SaleckF.M., ZaleskiS. and ChaventG.1995. Multiscale seismic waveform inversion. Geophysics60(5), 1457–1473.
     [Google Scholar]
  8. ByrdR.H., LuP., NocedalJ. and ZhuC.1995. A limited memory algorithm for bound constrained optimization. SIAM Journal on Scientific Computing16, 1190–1208.
     [Google Scholar]
  9. DupuyB., BalharethH., LandrøM. and StovasA.2014. Estimation of rock physics properties and gas saturation from time‐lapse full waveform inversion data. 76th EAGE Conference and Exhibition, Extended Abstracts.
  10. GrudeS., OsdalB. and LandrøM.2012. Sea‐bed diffractions and their impact on 4D seismic data. Geophysical Prospecting61, 199–214.
     [Google Scholar]
  11. HansteenF., WillsP.B., HornmanJ.C., JinL. and BourneJ.2010. Time‐lapse refraction seismic monitoring. 80th SEG annual international meeting, Expanded Abstracts 29, 4170–4174.
  12. JuppR., RatcliffeA. and WombellR.2012. Application of full waveform inversion to variable‐depth streamer data. 82nd SEG annual meeting, Expanded Abstracts.
  13. KazeiV.V., TroyanV.N., KashtanB.M. and MulderW.A.2013. On the role of reflections, refractions and diving waves in full‐waveform inversion. Geophysical Prospecting61, 1252–1263.
     [Google Scholar]
  14. KearyP. and BrooksM.1991. An Introduction to Geophysical Exploration. Blackwell Scientific Publications.
     [Google Scholar]
  15. KroodeF., BerglerS., CorstenC., MaagJ., StrijbosF. and TijhofH.2013. Broadband seismic data — The importance of low frequencies. Geophysics78(2), WA3–WA14.
     [Google Scholar]
  16. LandrøM.2011. Seismic monitoring of an old underground blowout—20 years later. First Break29, 39–48.
     [Google Scholar]
  17. LandrøM., NguyenA.K. and MehdizadehH.2004. Time lapse refraction seismic—A tool for monitoring carbonate fields? 74th SEG international meeting, Expanded Abstracts, 2295–2298.
  18. LarsenD.O. and LieA.1990. Monitoring an underground flow by shallow seismic data: a case study. 60th SEG annual meeting, Expanded Abstracts 9, 201–202.
  19. LieA. and LarsenD.O.1991. Shallow seismic and gas migration, The 2/4–14 Experience Transfer seminar. Stavanger, 16–17 January.
  20. LiuF., GuaschL., MortonS.A., WarnerM., UmplebyA., MengZ.et al. 2012. 3‐D time‐domain full waveform inversion of a Valhall OBC dataset. SEG Technical Program Expanded Abstracts, 1–5.
     [Google Scholar]
  21. NocedalJ. and WrightS.J.2000. Numerical Optimization. Springer.
     [Google Scholar]
  22. QueisserM. and SinghS.C.2013. Full waveform inversion in the time lapse mode applied to CO2 storage at Sleipner. Geophysical Prospecting61, 284–299.
     [Google Scholar]
  23. Ramos‐MartinezJ., KellyS., TsimelzonB. and CrawleyS.2010. Robust full‐waveform inversion–improving velocity estimation in settings with abrupt changes. 72nd EAGE Conference and Exhibition, Extended Abstracts, 372.
  24. RatcliffeA., WinC., VinjeV., ConroyG., WarnerM., UmplebyA.et al. 2011. Full waveform inversion: a North Sea OBC case study. 81st SEG annual international meeting, Expanded Abstracts, 2384–2388.
  25. SirgueL.2006. The importance of low frequency and large offset in waveform inversion. 68th EAGE meeting, Extended Abstracts, A037.
  26. SirgueL., BarkvedO.I., DellingerJ., EtgenJ., AlbertinU. and KommedalJ.H.2010. Full‐waveform inversion: the next leap forward in imaging at Valhall. First Break28(4), 65–70.
     [Google Scholar]
  27. SoubarasR. and DowleR.2010. Variable depth streamer – a broadband marine solution. First Break28, 89–96.
     [Google Scholar]
  28. TarantolaA.1984. Inversion of seismic‐reflection data in the acoustic approximation. Geophysics49, 1259–1266.
     [Google Scholar]
  29. TatanovaM., BakulinA., KashtanB.M. and KorneevV.2007. Head‐wave monitoring with virtual sources. 77th SEG annual international meeting, Expanded Abstracts 26, 2994.
  30. VirieuxJ.1986. P‐SV wave propagation in heterogeneous media; velocity‐stress finite‐difference method. Geophysics51, 889–901.
     [Google Scholar]
  31. VirieuxJ. and OpertoS.2009. An overview of full‐waveform inversion in exploration geophysics. Geophysics74(6), WCC1–WCC26.
     [Google Scholar]
  32. WarnerM., UmplebyA., SteklI. and MorganJ.2010. 3D full‐wavefield tomography: imaging beneath heterogeneous overburden. 72nd EAGE Conference and Exhibition, Workshops and Fieldtrips, WS6.
  33. WeibullW. and ArntsenB.2012. Full‐waveform inversion in the data and image spaces. 74th EAGE Conference and Exhibition, Extended Abstracts, G035.
  34. ZadehH., LandrøM. and BarkvedO.I.2011. Long‐offset time‐lapse seismic: Tested on the Valhall LoFS data. Geophysics76, O1–O13.
     [Google Scholar]
  35. ZadehM.H. and LandrøM.2011. Monitoring a shallow subsurface gas flow by time‐lapse refraction analysis. Geophysics76, O35–O43.
     [Google Scholar]
  36. ZhangF., JuhlinC., IvandicM. and LuthS.2013. Application of seismic full waveform inversion to monitor CO2 injection: modelling and a real data example from the Ketzin site, Germany. Geophysical Prospecting61, 284–299.
     [Google Scholar]
  37. ZhengY., BartonP. and SinghS.2013. Time‐lapse waveform inversion for a compacting reservoir. 75th EAGE Conference and Exhibition, Extended Abstracts.
http://instance.metastore.ingenta.com/content/journals/10.1111/1365-2478.12251
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Sensitivity analysis and application of time‐lapse full‐waveform inversion: synthetic testing and field data example from the North Sea, Norway
Geophysical Prospecting 64, 1183 (2016); https://doi.org/10.1111/1365-2478.12251
/content/journals/10.1111/1365-2478.12251
/content/journals/10.1111/1365-2478.12251
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  • Article Type: Research Article
Keyword(s): Head waves; Refraction; Seismic full‐waveform inversion; Shallow seismic; Time lapse

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