Setting and structure of the Sorrento field

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Exploring for Oil and Gas Traps
Series Treatise in Petroleum Geology
Part Predicting the occurrence of oil and gas traps
Chapter Predicting reservoir system quality and performance
Author Dan J. Hartmann, Edward A. Beaumont
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Figure 1 Location of the Sorrento field. From Sonnenberg.[1] Courtesy Rocky Mountain Association of Geologists.

The Sorrento field is in southeastern Colorado on the north flank of the Las Animas Arch. The map in Figure 1 shows the location of the Sorrento field. Structure is contoured on the base of the Pennsylvanian.

Morrow structure map

Figure 1 Circled wells represent Marmaton wells; triangles, Mississippian wells; and large X's, study wells. The rest of the oil wells produce from the Morrow. Each unit in the grid is 1 sq mi. From Sonnenberg.[1] Courtesy Rocky Mountain Association of Geologists.

The Sorrento field reservoir is Pennsylvanian Morrow valley-fill sandstones. As shown in Figure 2, structure contours on a marker bed above the Morrow Sandstone reflect the irregular thickness of the sandstone body and a small structural nose and closure. The oil column is length::70 ft depth::(20 m) and exceeds structural closure. This is a combination structural-stratigraphic trap. Fluvial sandstones lap onto marine shale at the margins of the valley, forming lateral seals.

In Figure 2, circled wells represent Marmaton wells; triangles, Mississippian wells; and large X's, study wells. The rest of the oil wells produce from the Morrow. Each unit in the grid is 1 sq mi.

See also

References

  1. 1.0 1.1 Sonnenberg, S. A., 1985, Tectonic and sedimentation model for Morrow sandstone deposition, Sorrento field area, Denver basin, Colorado: The Mountain Geologist, October, p. 180-191.

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Setting and structure of the Sorrento field
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