The field has produced over 3.5 TCF of natural gas. Using 3-D seismic, Royale and its partners have identified several prospective locations in the Martinez and Capay formations. The Royale CRC 8-1 will target the Martinez sand at a depth of approximately 6000'. Royale expects to reach total depth by mid-September. 

Don Hosmer, President of Royale Energy said, "We are excited to begin drilling in the Rio Vista field. With natural gas prices continuing to strengthen, we believe our Rio Vista program will provide an excellent return for our shareholders and drilling investors."