Fibre optic Distributed Acoustic Sensing (DAS) is a novel technology that uses an optical fibre cable as a sensor array for acoustic signals and one can take almost any downhole fibre-optic installation or deployment and turn the fibre optic cable into a large downhole seismic array to provide enhanced VSP imaging and monitor fluids and pressures changes in the hydrocarbon production reservoir. Seismic imaging and time-lapse reservoir monitoring can give us critical information to guide the placement of production and water injection wells in high-value reservoirs.

In order to obtain the characteristics of a shallow shale gas reservoir in Southwest China and to overcome the difficulties of low coverage and difficult imaging of shallow target layers with 3D surface seismic data, a simultaneous acquisition project of 3D surface seismic and 3D-VSP data was implemented in Zhejiang Oilfield, and the DAS technique was used in the 3D-VSP data acquisition. This paper takes the 3D DAS-VSP project as an example to introduce the data quality of DAS acquisition, and the technique for signal to noise ratio improvement in 3D DAS-VSP data processing. The difference between common fibers and armored fibers has been focused on to discuss the possibility of DAS system's industrialization.


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  1. Chen, Y. Z., Li, Y. P., Zhao, H., Jin, Q. H., Wang, X. M. and Liang, X.
    , 2012, Improving the precision of surface seismic data processing by walkaway-VSP: 74th EAGE Conference & Exhibition incorporating SPE EUROPEC. A032.
    [Google Scholar]
  2. Daley, T., Freifeld, B., Ajo-Franklin, J., Dou, S., Pevzner, R., Shulakova, V., Kashikar, S., Miller, D., Götz, J., Henninges, J. and Lüth, S.
    , 2013, Field testing of fiber-optic distributed acoustic sensing (DAS) for subsurface seismic monitoring: The Leading Edge, 32, No. 6, 699–706.
    [Google Scholar]
  3. Frignet, B. and Hartog, A.
    , 2014, Optical vertical seismic profile on wireline cable: SPWLA 55th Annual Logging Symposium, Abu Dhabi, May 18–22.
    [Google Scholar]
  4. Hartog, A., Frignet, B., Mackie, D. and Clark, M.
    , 2014, Vertical seismic optical profiling on wireline logging cable: Geophysical Prospecting, 62, No. 4, 693–701.
    [Google Scholar]
  5. Jiang, T., Zhan, G., Hance, T.s, Sugitanto, S., Soulas, S. and Kjos, E.
    , 2016, Valhall dual-well 3D DAS VSP field trial and imaging for active wells: SEG Technical Program Expanded Abstracts, 5582–5586.
    [Google Scholar]
  6. Li, Y. P., Chen, Y. Z., Peng, J. and Jin, Q. H.
    , 2010, Walkaway VSP multi-wave imaging over a gas cloud area: 72nd EAGE Conference & Exhibition incorporating SPE EUROPEC.
    [Google Scholar]
  7. Madsen, K., Thompson, M., Parker, T. and Finfer, D.
    , 2013, A VSP field trial using distributed acoustic sensing in a producing well in the North Sea: First Break, 31, 51–56.
    [Google Scholar]
  8. Mateeva, A., Mestayer, J., Cox, B., Kiyashchenko, D., Wills, P., Lopez, J., Grandi, S., Hornman, K., Lumens, P., Franzen, A., Hill, D. and Roy, J.
    , 2012, Advances in distributed acoustic sensing (DAS) for VSP: 82nd Annual International Meeting, SEG, Expanded Abstracts.
    [Google Scholar]
  9. Mateeva, A., Lopez, J., Potters, H., Mestayer, J., Cox, B., Kiyashchenko, D., Wills, P., Grandi, S., Hornman, K., Kuvshinov, B., Berlang, W., Yang, Z. and Detomo, R.
    , 2014, Distributed acoustic sensing for reservoir monitoring with vertical seismic profiling: Geophysical Prospecting, 62, No. 4, 679–692.
    [Google Scholar]
  10. Parker, T., Shatalin, S. and Farhadiroushan, M.
    , 2014, Distributed Acoustic Sensing – a new tool for seismic applications: First Break, 32, 61–69.
    [Google Scholar]
  11. Sun, X. G., Lin, Y., Gao, J., Sun, Z. S. and Lin, J. X.
    , 2009, Anisotropic parameter calculation by walkaway VSP and full azimuth seismic data: 79th SEG Annual Meeting, Expanded Abstracts, 4169–173.
    [Google Scholar]
  12. Yu, G., Cai, Z. D., Chen, Y. Z., Wang, X. M., Zhang, Q. H., Li, Y. P., Wang, Y. H., Liu, C. W., Zhao, B. Y. and Greer, J.
    , 2016, Walkaway VSP using multimode optical fibers in a hybrid wireline: The Leading Edge, July2016, 936–940.
    [Google Scholar]
  13. , 2018, Borehole seismic survey using multimode optical fibers in a hybrid wireline: Measurement, Elsevier, Vol. 125, September2018, Pages 694–703.
    [Google Scholar]

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