Abstract: Lodgepole Reef Potential of Eastern Montana
BROGDON, LARRY D., DAVIS S. BALL, and STANTON M. BALL
Detailed mapping of the Mississippian aged Lodgepole trend indicates a fairway from eastern Stark County, North Dakota west and northwest into portions of Wibaux, Dawson and McCone Counties, Montana. This fairway is defined by 200 feet or greater of Lower Lodgepole section. Three random penetrations of reef facies have been encountered in eastern Montana. Lower Mississippian reefs throughout the world tend to be found in clusters. The importance of these random penetrations of reefs in Montana is that they may identify clusters of reefs.
Seismic acquisition in this area is very good. Permian and Triassic salts that cause velocity problems in North Dakota are not present in this portion of eastern Montana. Identifying Lodgepole reefs on seismic is a challenge because they are encased in carbonates. Several 3D surveys have been conducted or are planned with Lodgepole as the primary objective.
AAPG Search and Discovery Article #90946©1997 AAPG Rocky Mountain Section Meeting, Denver, Colorado