2Dominion Exploration & Production, Inc., Indiana, PA, 15701

The Bradford Group sandstones belong to the Upper Devonian Lock Haven Formation of west-central Pennsylvania. The Bradford Group sands represent an active gas play in the Punxsutawney, Pennsylvania study area. The Punxsutawney study area consists of 400 square miles at the junction of Clearfield, Jefferson, and Indiana counties, Pennsylvania.

The Bradford Group consists of the Warren through Kane sands for purposes of this study. Bounding time stratigraphic surfaces such as flooding surfaces and sequence boundaries are used to identify parasequences within the Bradford Group sandstones. Parasequence stacking patterns and reservoir occurrence are characterized relative to a published Devonian sea level curve to examine the role of eustacy, sedimentation rate and subsidence in the development of the Bradford Group reservoirs.

AAPG Search and Discovery Article #90059©2006 AAPG Eastern Section Meeting, Buffalo, New York