TULSA, Okla.--(BUSINESS WIRE)--Empire Petroleum Corporation (OTCQB: EMPR) (“Company”) announced today that the board of directors has retained Pritchard Griffin Advisors (“PGA”) to advise the company on its previously announced potential NW Louisiana transaction and on other prospective mergers, joint ventures and acquisitions for the Company.Mike Morrisett, President of Empire Petroleum Corporation, commented, “We are very pleased to have PGA engaged…