ONEOK, Inc. is a diversified energy company. It is a partner company of ONEOK Partners. The Company holds approximately 41.20 % interest in ONEOK Partners. The Company�s distribution markets include Oklahoma City and Tulsa, Oklahoma; Kansas City, Wichita and Topeka, Kansas, and Austin and El Paso, Texas. The Company�s segments include ONEOK Partners, Natural Gas Distribution and Energy Services. The ONEOK Partners segment gathers, processes and stores, and transports natural gas in the United States. The Natural Gas Distribution segment provides natural gas distribution services to residential, commercial, industrial and transportation customers. The Energy Services segment provides next-day and no-notice natural gas delivery services as per customer requirement.