Atlas Pipeline Operating Affiliates. ("Atlas") is a full service midstream company providing reliable gas gathering, compression, processing and treating services to its customers. A growing company in the Mid-Continent region of Oklahoma, Missouri, Kansas, Arkansas, northern and western Texas and the Texas panhandle, the company owns and operates approximately 9000 miles of active intrastate gas gathering pipeline and a 525 mile interstate natural gas pipeline. The company also operates seven gas processing plants and a treating facility in Velma, Elk City, Sweetwater, Prentiss, and Enid, Oklahoma and Midland Texas where natural gas liquids and impurities are removed.