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Abstract

Summary

In this study we investigate the rock physics properties of Draupne/Spekk Fm organic rich shales offshore Norway using rock physics templates for clay-rich source rocks ( ). We attempt to understand the complex geologic processes of organic rich shales, and how these processes control the rock physics properties and seismic signatures of these rocks. With burial depth, there are many competing effects that impact the rock physics parameters of organic rich shales. The compaction itself will reduce porosities and stiffen the rock frame, associated with both mechanical and chemical compaction. The kerogen will gradually transform to hydrocarbons with increasing maturity. Using rock physics models we try to understand the effects of diagenesis, TOC/kerogen volume, hydrocarbon generation/expulsion, and overpressure. We investigate well log data from different basins, and at varying maturation levels. One of the main goals is to be able to discriminate mature, clay-rich source rocks from hydrocarbon-filled sandstones.

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/content/papers/10.3997/2214-4609.201414406
2015-11-15
2024-03-28
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References

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