1887

Abstract

Summary

The use of seismic well logs such as sonic and density for well-to-seismic matching, seismic interpretation, inversion and 3D model building is well known. Generally, the depth-to-time conversion is done using the standard checkshot correction. Both errors in the VSP/checkshot first-break picking as well as the seismic logs make this process error prone. To improve the understanding of the subsurface and get the maximum value out of broadband seismic data and seismic diffraction imaging, this paper presents a novel and robust log repair and upgrading methodology to transform well data (seismic logs and VSP/checkshots) into a complete and realistic velocity and density profile from surface to TD. A case study from the south of the Netherlands (well Heeswijk-01) is used to analyse the performance of the proposed new methodology. Comparison of the original logs after checkshot correction and the upgraded and integrated logs show a dramatic improvement in the seismic-to-well match. Application of this promising log upgrading methodology in both oil & gas and geothermal projects around the world is thus appropriate in order to get more value out of expensive wells and seismic data.

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/content/papers/10.3997/2214-4609.201800988
2018-06-11
2024-03-28
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References

  1. CastagnaJ.P., BatzleM.L., KanT.K.
    1993, Rock physics — The link between rock properties and AVO response, Investigations in Geophysics, No. 8, SEG
    [Google Scholar]
  2. DillonP.B., CollyerV.A.
    1985, On timing the VSP first arrival, Geophysical Prospecting33, 1174–1194
    [Google Scholar]
  3. Gal’perinE.I.
    1974, Vertical seismic profiling and its exploration potential, Reidel
    [Google Scholar]
  4. Hardage, B.A.
    2000, Vertical Seismic Profiling: Principles, Pergamon Press
    [Google Scholar]
  5. HindsR.C., AndersonN.L., KuzmiskiR.D.
    1996, VSP Interpretive Processing: Theory and Practice, SEG
    [Google Scholar]
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