Date of Award

12-1991

Degree Name

Master of Science

Department

Geosciences

First Advisor

Dr. William B. Harrison III

Second Advisor

Dr. Christopher J. Schmidt

Third Advisor

Dr. W. Thomas Straw

Access Setting

Masters Thesis-Open Access

Abstract

Enhanced reservoir quality in the Middle Ordovician St. Peter Sandstone is observed in gas bearing zones in wells located on domal structures. Geometry and degree of this enhanced porosity development is the result of the interplay of structural, depositional, and diagenetic controls. An integrated subsurface study of the Woodville/Goodwell field area was performed in order to document controls on hydrocarbon accumulation.

Recurrent structural growth of domal features throughout the Paleozoic is well documented by isopach mapping. Burial and thermal history studies indicate that hydrocarbons were generated in Ordovician aged source rocks during late Devonian to early Mississippian time, and accumulated in Ordovician to Silurian aged paleostructural traps. These paleostructural hydrocarbon accumulations were then modified by a post late Pennsylvanian period of structural growth.

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