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  • AGU (American Geophysical Union)  (2)
  • 1
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    AGU (American Geophysical Union) | Wiley
    In:  In: Integrated Imaging of the Earth: theory and applications. , ed. by Moorkamp, M., Lelievre, P. G., Linde, N. and Khan, A. Geophysical Monograph Series, 218 . AGU (American Geophysical Union), Wiley, Washington, DC, pp. 167-190. ISBN 978-1-118-92905-6
    Publication Date: 2017-01-04
    Description: This chapter investigates the particular challenges for joint inversion in the context of hydrocarbon exploration. It reviews the current literature and introduces interesting approaches that have been developed in the context of hydrocarbon exploration and could potentially be used in other application areas as well. Joint inversion methods incorporating petro physical models of the reservoir can directly yield quantities of interest such as porosity and permeability, but have to be carefully tuned to the area under investigation. The chapter presents two detailed joint inversion case studies, one for subsalt imaging and one for sub basalt imaging. It also covers emulation of the forward calculation, a concept that can be applied generally in joint inversion, but has only been applied in hydrocarbon exploration. For a successful joint inversion, it is necessary to invert each dataset, construct different coupling approaches, and evaluate the impact on the final results.
    Type: Book chapter , NonPeerReviewed
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  • 2
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    AGU (American Geophysical Union) | Wiley
    In:  Geophysical Research Letters, 40 (14). pp. 3596-3601.
    Publication Date: 2017-06-20
    Description: We present results of three-dimensional joint inversion of seismic, magnetotelluric, and gravity data over a marine salt dome. Such structures are difficult to image with a single method, and our results demonstrate how combining different techniques can yield improved results. More importantly, we examine the reliability of velocity-conductivity relationships derived from structure-coupled joint inversion approaches. Comparison with a seismic reflection section shows that our models match the upper limit of the salt. Furthermore, velocity and resistivity logs from a borehole drilled into the salt dome's flank match, within error, those recovered by the inversion. The good match suggests that the difference in length scale does not have a significant effect in this case. This provides a strong incentive to incorporate borehole data into the joint inversion in the future and substantiates approaches that use the relationships derived from joint inversion models for lithological classification.
    Type: Article , PeerReviewed
    Format: text
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