Hancock County, TN Situated in the Appalachian thrust belt, the Swan Creek field was discovered by Amoco in the 1980 s. Tengasco began exploration and development of this field in 1997... production since Tengasco began operations of approximately 3.2 BCF of gas and 200,000 barrels of oil. Other potential exists in the near-by area for Devonian shale exploration for gas... available for transportation. View our Tennessee Gallery. This video shows oil coming in through perforations in the pipe. Our Location Tengasco 11121 Kingston Pike Suite E Knoxville, TN...