ONEOK and ONEOK Partners to present at 2006 Calyon Securities Conference

November 27, 2006

TULSA, Okla., Nov 27, 2006 /PRNewswire-FirstCall via COMTEX News Network/ -- ONEOK, Inc. (NYSE: OKE) and ONEOK Partners, L.P. (NYSE: OKS) will participate in the 2006 Calyon Securities Utilities and Energy Merchant conference in New York on Thursday, Nov. 30, 2006.

John W. Gibson, chief executive officer-elect for ONEOK and ONEOK Partners, and Jim Kneale, president and chief operating officer-elect of ONEOK, will present.

Copies of the presentation will be available the morning of the conference at ONEOK's Web site (www.oneok.com) and ONEOK Partners' Web site (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 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 www.oneokpartners.com or www.oneok.com.

    Analyst Contact: Dan Harrison        Analyst Contact: Ellen Konsdorf
    918-588-7950                         877-208-7318
    Media Contact: Megan Washbourne      Media Contact: Beth Jensen
    918-588-7572                         402-492-3400

OKE-FV
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SOURCE ONEOK, Inc.; ONEOK Partners, L.P

Analyst Contact: Dan Harrison, +1-918-588-7950; or Media Contact: Megan Washbourne,
+1-918-588-7572; or Analyst Contact: Ellen Konsdorf, +1-877-208-7318; or Media
Contact: Beth Jensen, +1-402-492-3400
www.oneok.com