Changes

| Determine whether a relationship exists between the development of reservoir-quality rocks, seal-quality rocks, and lithofacies that can be used to predict location and economic viability of prospective traps.

| Determine whether a relationship exists between the development of reservoir-quality rocks, seal-quality rocks, and lithofacies that can be used to predict location and economic viability of prospective traps.

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==Example: calibrating logs to cores and shows==

==Example: calibrating logs to cores and shows==

[[file:exploring-for-stratigraphic-traps_fig21-31.png|thumb|{{figure number|21-31}}See text for explanation.]]

[[file:exploring-for-stratigraphic-traps_fig21-32.png|thumb|{{figure number|2}}. Copyright: Putnam and Oliver, 1980; courtesy Canadian Society of Petroleum Geologists. Map courtesy Eric Dahlberg.]]

 

Posting core [[porosity]], permeability, and pore throat radius (r₃₅) data directly on wireline logs next to lithofacies descriptions and show data helps us decide about exploitation for stratigraphic traps. In [[:file:exploring-for-stratigraphic-traps_fig21-31.png|Figure 1]], the live oil stain in macroporous strata indicates the direction to move updip. The only macroporous strata present is within an algal mound facies developed in this parasequences at relative highstand. Microporous dolomites comprising the lower portions of the parasequences have poor reservoir characteristics, despite high porosity readings on the logs. Thus, the target of interest is the highstand mound facies.

==Example: using pressures==

==Example: using pressures==

Reservoir scale discontinuities often cannot be detected by primary trapping geometries from [[sequence stratigraphy]] alone. Within channel systems of the Lower Cretaceous Mannville Group (Alberta, Canada), fluids distributions may be complex. High-resolution definition of the discrete traps may be possible only by integrating more data.

Reservoir scale discontinuities often cannot be detected by primary trapping geometries from [[sequence stratigraphy]] alone. Within channel systems of the Lower Cretaceous Mannville Group (Alberta, Canada), fluids distributions may be complex. High-resolution definition of the discrete traps may be possible only by integrating more data.

The figure to the right shows two distinct pressure regimes coinciding with discrete channel systems, delineated with pressure-depth plots. For additional information, refer to Dahlberg.<ref name=ch21r9>Dahlberg, E., C., 1982, Applied Hydrodynamics in Petroleum Exploration: New York, Springer-Verlag, 161 p.</ref>

[[:file:exploring-for-stratigraphic-traps_fig21-32.png|Figure 2]] shows two distinct pressure regimes coinciding with discrete channel systems, delineated with pressure-depth plots. For additional information, refer to Dahlberg.<ref name=ch21r9>Dahlberg, E., C., 1982, Applied Hydrodynamics in Petroleum Exploration: New York, Springer-Verlag, 161 p.</ref>

 

==See also==

==See also==