EnerJex Resources, Inc. (EnerJex) focuses to acquire, develop, explore and produce domestic onshore oil properties. EnerJex’s operations are conducted through EnerJex Kansas, Inc. and Black Sable Energy, LLC, and the Company’s leasehold interests are held in its wholly owned subsidiaries DD Energy, Inc., Black Sable Energy, LLC, Rantoul Partners, and Working Interest, LLC. As of December 31, 2011, the Company's business activities are focused in Eastern Kansas and South Texas. EnerJex’s properties include Kansas Properties, which includes Mississippian Project, Rantoul Project and other, and Texas Properties, which include El Toro Project and Lonesome Dove Project. In October 2013, EnerJex Resources Inc completed its merger with Black Raven Energy Inc.