ONEOK and ONEOK Partners to Present at Howard Weil Inc.'s 35th Annual Energy Conference

TULSA, Okla., March 14, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- ONEOK, Inc. (NYSE: OKE) and ONEOK Partners, L.P. (NYSE: OKS) will present at Howard Weil's 35th Annual Energy Conference on Tuesday, April 3, 2007, in New Orleans, La., at 2:10 p.m. Central Daylight Time.

John W. Gibson, chief executive officer of ONEOK and president and CEO of ONEOK Partners, will present at the conference. A slide presentation will be available on April 3 at 8:00 a.m. at http://www.oneok.com and http://www.oneokpartners.com .

ONEOK, Inc. (NYSE: OKE) is a diversified energy company. We are the general partner and own 45.7 percent of ONEOK Partners, L.P. (NYSE: OKS), one of the largest publicly traded limited partnerships, which 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 much of the natural gas and NGL supply in the mid-continent with key market centers. ONEOK is among the largest natural gas distributors in the United States, serving more than 2 million customers in Oklahoma, Kansas and Texas. Our energy services operation focuses primarily on marketing natural gas and related services throughout the U.S. ONEOK is a Fortune 500 company.

ONEOK Partners, L.P. (NYSE: OKS) is one of the largest publicly traded 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 much of the natural gas and NGL supply in the Mid-Continent with key market centers. Its general partner is a wholly owned subsidiary of ONEOK, Inc. (NYSE: OKE), a diversified energy company, which owns 45.7 percent of the overall partnership interest. 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 sites at http://www.oneokpartners.com or http://www.oneok.com .

     Analyst Contact:  Dan Harrison
                       918-588-7950
     Media Contact:    Megan Washbourne
                       918-588-7572

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OKS-FV

SOURCE ONEOK, Inc.; ONEOK Partners, L.P.

analysts, Dan Harrison, +1-918-588-7950, or media, Megan Washbourne, +1-918-588-7572,
both of ONEOK, Inc.

http://www.oneok.com