PRB Energy Inc., Denver, (Amex: PRB) has acquired 12 gas wells and one water-disposal well, and approximately 330,000 net acres in northeast Colorado and southwest Nebraska from an undisclosed seller for $11.7 million in cash. The production and future development activities are in the Niobrara formation. The acquisition includes approximately 159 drilling locations, the license to 85 square miles of proprietary 3-D seismic and 115 miles of proprietary 2-D seismic.