TULSA, Okla., March 1, 2012/PRNewswire/ -- ONEOK, Inc. (NYSE: OKE) and ONEOK Partners, L.P. (NYSE: OKS) will present at the Barclays Capital Investment Grade Energy and Pipeline Conference on Thursday, March 8, 2012, in New York City, at 11:30 a.m. Eastern Standard Time(10:30 a.m. Central Standard Time). 

Robert F. Martinovich, executive vice president, chief financial officer and treasurer of ONEOK and ONEOK Partners, will present.

The materials utilized at the conference will be accessible on the ONEOK and ONEOK Partners websites, www.oneok.com, www.oneokpartners.com, on Thursday, March 8, 2012, beginning at 7 a.m. Central Standard Time.

ONEOK, Inc. (NYSE: OKE) is a diversified energy company.  We are the general partner and own 42.8 percent of ONEOK Partners, L.P. (NYSE: OKS), one of the largest publicly traded master 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 NGL supply in the Mid-Continent and Rocky Mountain regions with key market centers.  ONEOK is among the largest natural gas distributors in the United States, serving more than 2 million customers in Oklahoma, Kansasand Texas.  Our energy services operation focuses primarily on marketing natural gas and related services throughout the U.S.  ONEOK is a FORTUNE 500 company and is included in Standard & Poor's (S&P) 500 Stock Index.

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 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 websites at www.oneok.com or www.oneokpartners.com.

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