Time-Slice Topography Using Complex Wavelet Seismic Volume Attributes

Spaendonck, R.L.C. van; Steeghs, T.P.H.

doi:10.3997/2214-4609-pdb.6.e37

Cited by 1 publication

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“…Variations in signal character can often be tied to geological features. An attempt was made to extract zones of increased reflection strength from the seismic cube using a time-frequency analysis technique described by Van Spaendonck and Steeghs (2003) (Steeghs and Baraniuk, in prep.). Using this technique, dip and slope are determined in the seismic cube in a moving window using the instantaneous auto-correlation.…”

Section: Seismic Analysismentioning

confidence: 99%

The Permian Rotliegend Reservoir Architecture of the Dutch Koekoekspolder Geothermal Doublet

Mijnlieff

Bloemsma²,

Donselaar³

et al. 2014

Proceedings

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The Dutch Koekoekspolder geothermal doublet was drilled in 2011. It targets the Permian Rotliegend reservoir. The reservoir properties encountered were less favorable than expected pre-drill. Post-drill integrated evaluation of vintage data and the new data from the geothermal wells resulted in a refined depositional model of the area. The Rotliegend sediments comprise predominantly horizontally, bimodally laminated fine to coarse grained red sandstones. These sediments were deposited on an aeolian sandflat. Gypscretes were formed on this sandflat in the relative low-lying areas, which coincide with palaeo-lows of the pre-Permian palaeotopgraphy. These gypscretes were periodically exhumed and (partly) eroded providing gypsum grains. These were subsequently incorporated in the predominant quartz rich sand sediments on the sandflat forming typical bimodally laminated Aeolian deposits. The gypscretes are now present as pervasively anhydrite cemented horizons haphazardly vertically distributed. The improved understanding of the formation and occurrence of the gypscretes, in combination with advanced seismic attribute analysis can help in the identification of low-permeability zones that may impede the performance of future doublets.

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Section: Seismic Analysismentioning

confidence: 99%