Sequence stratigraphy and micro-image analysis of the upper Morrow sandstone in the Mustang East field, Morton County, Kansas

Scope and method of study. The early Pennsylvanian upper Morrow sandstone was studied in the Mustang East field of Morton County, Kansas. A rich data set including wireline logs, whole core, and micro-resistivity images were available for interpretation. Data from core, thin section, X-ray diffraction, scanning electron microscopy, cross sections and subsurface isopach maps were integrated to interpret the depositional and diagenetic processes that influence genesis of the Morrow sandstone reservoirs.; Findings and conclusions. The upper Morrow sandstones are stratigraphically located below the Atokan Thirteen Finger Limestone and above the "Squaw Belly" or middle Morrow. These sandstones represent deposition by fluvial to estuarine processes and are completely encased in marine mudrocks.; The pebble conglomerate to coarse-grained sandstone's of the upper Morrow interval provide excellent reservoirs for oil and gas. The complete encasement of these sandstones within marine mudrocks make them lucrative, but elusive, drilling targets within the Hugoton Embayment. (Abstract shortened by UMI.)...