Rango Energy Inc. announced that planning and cost estimation is underway for second well on the Kettleman Middle Dome (KMD) project. The second well on the structure is slated to begin in mid-December 2013. The Kettleman Middle Dome project covers the central anticlinal 'dome' structure which is part of a large three-part northwest-southeast trending anticline which hosts a billion barrel oilfield.

The two other 'domes' are the Lost Hills field in the south dome, and the Kettleman North Dome which is located just to the northwest of the KMD site. The KMD project area is over 11,000 acres in size and is underlain by several prolific formations which include the Monterey Shale, the Temblor Sands, the Vaqueros sandstone, the McAdams sandstone and the Kreyenhagen Shale.