1887

Abstract

Summary

Compaction and cementation are two of the most important mechanical and geochemical processes that cause porosity reduction during the deposition and burial of a rock. To understand the resulting petrophysical properties and their corresponding elastic response remains an important and challenging topic for rock physics. We propose a hybrid rock physics model which combines the cement model and the unconsolidated sand model, in order to consider both, compaction and cementation effects. The proposed modelling workflow allows us to understand better the elastic properties of sands and the corresponding seismic signatures during the depositional and burial history. With the guide of geological information about the depositional and burial history, this hybrid model also provides an approach to estimate the seismic response of siliciclastic reservoir rocks away from well control at different physical conditions and different amount of cement. We demonstrate the modelling workflow on well log data, as well as published lab data. The modelling results show accurate agreement with the measured data and good correlation with the burial and diagenetic history of the studied rocks.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201701213
2017-06-12
2022-01-29
Loading full text...

Full text loading...

References

  1. Al-Tahini, A., Sondergeld, C., and Chandra, S.
    [2007] Effect of cementation on ultrasonic velocities in sandstones, Geophysics, 72, E53–E58.
    [Google Scholar]
  2. Dvorkin, J., Berryman, J., and Nur, A.
    [1999] Effective moduli of cemented sphere packs, Mechanics of Materials, 31, 461–469.
    [Google Scholar]
  3. Dvorkin, J., and Nur, A.
    [1996] Elasticity of high-porosity sandstones: Theory for two North Sea data sets, Geophysics, 61(5), 1363–1370.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201701213
Loading
/content/papers/10.3997/2214-4609.201701213
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error