Lithofacies analysis
Revision as of 15:50, 22 September 2014 by Cwhitehurst (talk | contribs)
Lithofacies are interpreted from well data and seismic facies descriptions. Lithofacies interpretations should be based on all available well and outcrop data and on seismic facies interpretations.
Procedure
Below is a suggested procedure for analyzing lithofacies.
Step | Action |
---|---|
1 | Learn as much as possible about the regional geology from well and outcrop control. |
2 | Describe cores and cuttings from sequences of interest. Besides describing lithology, grain size, and sedimentary structures, also describe pore geometry. |
3 | Calibrate core and cuttings descriptions to well logs and outcrops. Annotate logs with porosity and permeability data (if available) from potential reservoir and seal intervals. |
4 | Integrate calibrated well logs into well log cross sections constructed during well log sequence analysis. |
5 | Interpret depositional environments of lithofacies of depositional sequences using log cross sections and seismic sections with seismic facies analyses. |