Petro River Oil Corp. announced a new oil field discovery in its Sunset Boulevard prospect in Kern County, California upon successfully drilling the Cattani-Rennie 47X-15 exploration well (CR 47X). The CR 47X was drilled to a depth of approximately 8,500 feet and confirmed at least two commercially successful pay zones. The discovery is currently being evaluated but initial results indicate significant reserve potential. Following completion and production tests, the company will announce development plans. Several additional prospect wells are now being planned to be drilled in Kern County.