Rio Petroleum, Inc. began doing business in 1979, as the operating company of Barrett W. Pierce.

Rio, a Texas Corporation, is a regional oil and gas operator based in Amarillo.

Rio currently serves as operator of producing oil and gas leases in Texas. The company has a full-time staff and several part-time employees and consultants.

Rio's staff devotes its time to the physical and administrative operation of the leases and to the evaluation and completion of new oil and gas related projects.

Rio is currently exploring for and producing oil and gas in the Anadarko Basin (Texas Panhandle and Western Oklahoma) the Hardeman Basin (North Texas), Delaware Basin (West Texas), the Fayetteville Basin in Arkansas and the Utica Basin in Ohio.

Rio performs administrative support to affiliated mineral and farming entities.