Modeling in‐line data for seabed logging with 2.5D and 3D integral equations

Tehrani, A. Moradi; Slob, Evert

doi:10.1190/1.3063746

Cited by 3 publications

(1 citation statement)

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“…In a 2.5D inversion algorithm it is assumed that a 2D resistivity model, in which the resistivity is invariant in the horizontal direction perpendicular to the towline, provides an adequate approximation to the real 3D subsurface. This is often a valid approximation when inverting CSEM data from a single towline, since the sensitivity to variations in resistivity in the transverse direction is limited (Tehrani and Slob, 2008). The advantage of the 2.5D approach is that the forward modeling algorithm used by the inversion is significantly faster than a 3D forward modeling code required for a full 3D inversion.…”

Section: Theorymentioning

confidence: 99%

Incorporating seismic horizons in inversion of CSEM data

Mittet

2009

SEG Technical Program Expanded Abstracts 2009

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To improve the interpretation of controlled-source electromagnetic (CSEM) data it is desirable to include information from seismic data in a joint interpretation. The higher resolution of the seismic image makes it possible to accurately determine the depth of resistivity contrasts detected by the CSEM data. In this paper we show how horizons derived from seismic data can be incorporated in a CSEM inversion workflow to obtain resistivity models which are more consistent with both the CSEM data and the seismic data, and we demonstrate this workflow on a CSEM field data set.

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Section: Theorymentioning

confidence: 99%