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ONEOK Partners to Participate in Bank of America Merrill Lynch Bakken Day

Terry K. Spencer, ONEOK Partners chief operating officer, will present.

Presentation slides will be posted on ONEOK Partners' website, www.oneokpartners.com, at 5 p.m. Eastern Daylight Time (4 p.m. Central Daylight Time) on Aug. 11, 2010.

ONEOK Partners, L.P. (NYSE: OKS) is one of the largest publicly traded master limited partnerships and is a leader in the gathering, processing, storage and transportation of natural gas in the U.S. and owns one of the nation's premier natural gas liquids (NGL) systems, connecting NGL supply in the Mid-Continent and Rocky Mountain regions with key market centers. Its general partner is a wholly owned subsidiary of ONEOK, Inc. (NYSE: OKE), a diversified energy company, which owns 42.8 percent of the partnership. ONEOK is one of the largest natural gas distributors in the United States, and its energy services operation focuses primarily on marketing natural gas and related services throughout the U.S.

For more information, visit the Web site at www.oneokpartners.com.

    Analyst Contact:  Andrew Ziola
                      918-588-7163
    Media Contact:    Brad Borror
                      918-588-7582

OKS-FV

SOURCE ONEOK Partners, L.P.