CMP nonlinear inversion in (τ‐<i>p</i>) domain

Chapel, F.; Kolb, Pierre; Canadas, Guy

doi:10.1190/1.1889824

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1998

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“…The first step has been presented previously by Chapel, Kolb, and Canadas (1989), while the last step was presented by Helgesen and Landrø (1993).…”

Section: Methodsmentioning

confidence: 99%

3. AVO Inversion of a Mobil Data Set

Buland¹,

Landrø²

1998

Comparison of Seismic Inversion Methods on a Single Real Data Set

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The objective of the present work is to obtain estimates of the P-and S-wave velocities and densities of the subsurface. The inversion is carried out on 952 τ -p transformed CMP gathers, each containing 61 p values ranging from 0.05 to 0.35 s/km.The forward modeling is performed by convolving the reflectivity with the wavelet, and it includes water bottom multiples, transmission effects, absorption and array filter effects. The basic assumption is that the subsurface is close to horizontally layered. A damped Gauss-Newton algorithm is used to minimize a least-squares misfit function.Comparison with the two well logs shows good agreement for the P-wave velocity estimates in the areas where the geology is close to horizontally stratified. In deeper and faulted areas the deviation between estimated and measured P-wave velocities is larger. The same trend holds for the S-wave velocity estimates, while the densities are the poorest resolved seismic parameter.

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“…The first step has been presented previously by Chapel, Kolb, and Canadas (1989), while the last step was presented by Helgesen and Landrø (1993).…”

Section: Methodsmentioning

confidence: 99%

3. AVO Inversion of a Mobil Data Set

Buland¹,

Landrø²

1998

Comparison of Seismic Inversion Methods on a Single Real Data Set

View full text Add to dashboard Cite

show abstract

CMP nonlinear inversion in (τ‐p) domain

Cited by 1 publication

References 1 publication

3. AVO Inversion of a Mobil Data Set

3. AVO Inversion of a Mobil Data Set

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