Date of Award
Master of Science
Geological and Environmental Sciences
Dr. David A. Barnes
Dr. William B. Harrison, III
Dr. Michelle Kominz
Geology, sedimentary, stratigraphy, sandstone, diagenesis
Masters Thesis-Open Access
The Middle Ordovician St. Peter Sandstone in the Michigan Basin is a target for hydrocarbon exploration/production, and carbon sequestration and geologic storage. The St. Peter is predominantly a marine sandstone with four dominant lithofacies. The uppermost facies contains zones of porosity and good reservoir quality. Because of the mostly uniform detrital composition, diagenesis must play a leading role in reservoir quality development. This study tests stratigraphic controls on diagenesis and reservoir quality development. The distribution of diagenetic regimes is believed to result from depositional setting and related geologic processes, including variations in sediment accumulation rate. Early carbonate cements preserve pre-compaction intergranular pore space available for late diagenetic processes including de-cementation and the inhibition of quartz overgrowth development. This stratigraphic/diagenetic model is evaluated using conventional core, wire-line logs, and petrographic/petrologic techniques to assess stratigraphic and sedimentologic controls on regionally variable reservoir quality. Evidence for early marine cements and associated reservoir quality is demonstrated at and subjacent to flooding surfaces, of which correlations are made regionally across the basin.
Zdan, Stephen A., "Stratigraphic Controls on Diagenetic Pathways in the St. Peter Sandstone, Michigan Basin" (2013). Master's Theses. 451.