|   | (Date of report)                  | March 5, 2012 |
|--------|-----------------------------------|---------------|
|   | (Date of earliest event reported) | March 1, 2012 |

| Delaware                     |   | 1-12202      |   | 93-1120873          |
|------------------------------|--------|--------------|--------|---------------------|
| (State or other jurisdiction |   | (Commission  |   | (IRS Employer       |
| of incorporation)            |   | File Number) |   | Identification No.) |

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| Item 7.01 |   | Regulation FD Disclosure                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-----------|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|      |   |  On March 1, 2012, we and ONEOK, Inc. (ONEOK) announced we will participate in the Morgan Stanley MLP and Diversified Natural Gas Corporate Access Day, and we will present at the Barclays Capital Investment Grade Energy and Pipeline Conference on Thursday, March 8, 2012, in New York City.  Copies of the news releases are attached as Exhibits 99.1 and 99.2 and are incorporated herein by reference.The materials utilized at the conferences will be accessible on the ONEOK and ONEOK Partners websites, www.oneok.com and www.oneokpartners.com, on Thursday, March 8, 2012, beginning at 7 a.m. Central Standard Time.The information disclosed in this Item 7.01, including Exhibits 99.1 and 99.2 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the Exchange Act), or otherwise subject to the liabilities under that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act except as expressly set forth by specific reference in such filing.  |
| Item 9.01 |   | Financial Statements and Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|      |   |  Exhibits                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|      |   | 99.1    News release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated March 1, 2012 - Morgan Stanley MLP and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|      |   |            Diversified Natural Gas Corporate Access Day.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|      |   | 99.2    News release issued by ONEOK, Inc. and ONEOK Partners, L.P. dated March 1, 2012 - Barclays Capital Investment                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|      |   |            Grade Energy and Pipeline Conference.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |

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|   |          |   | ONEOK Partners, L.P.By:  ONEOK Partners GP, L.L.C., General Partner            |
|--------|---------------|--------|------------------------------------------------------------------------------------------|
|   |          |   |                                                                                     |
| Date:  | March 5, 2012 | By:    | /s/ Robert F. Martinovich                                                                |
|   |          |   | Robert F. MartinovichExecutive Vice President,Chief Financial Officer andTreasurer  |