ONEOK and ONEOK Partners Increase Full-year 2006 Guidance; Provide Preliminary 2007 Guidance

November 28, 2006

TULSA, Okla., Nov 28, 2006 /PRNewswire-FirstCall via COMTEX News Network/ -- ONEOK, Inc. (NYSE: OKE) and ONEOK Partners, L.P. (NYSE: OKS) increased their 2006 earnings guidance and provided their preliminary 2007 earnings guidance.

ONEOK's updated 2006 earnings guidance is in the range of $2.60 to $2.70 per diluted share and includes a $52 million, or 28 cents per share, one-time gain on ONEOK's share of ONEOK Partners' sale of a 20 percent interest in Northern Border Pipeline. ONEOK's preliminary 2007 earnings guidance is estimated to be in the range of $2.35 to $2.75 per diluted share.

ONEOK Partners' updated 2006 earnings guidance is now estimated in the range of $4.92 to $5.02 per unit and includes a $114 million, or $1.51 per unit, one-time gain associated with the sale of a 20 percent interest in Northern Border Pipeline. Updated guidance for 2006 distributable cash flow is $363 million to $371 million, or $4.44 to $4.54 per unit.

ONEOK Partners' preliminary 2007 earnings guidance is $3.06 to $3.46 per unit. Preliminary estimates for ONEOK Partners' 2007 distributable cash flow are $370 million to $404 million, or $3.91 to $4.32 per unit. The average number of units outstanding for 2007 is expected to be 82.9 million, compared with 73.8 million in 2006.

Both ONEOK and ONEOK Partners preliminary 2007 guidance is based on estimates using current New York Mercantile Exchange (NYMEX) prices for natural gas and crude oil and current Oil Price Information Service (OPIS) prices for natural gas liquids. ONEOK and ONEOK Partners expect to update their 2007 guidance during the year.

"In 2007, ONEOK will benefit from the recently settled rate case in Kansas, which will increase annual rates by $52 million and contribute approximately $45 million in additional operating income," said David Kyle, chairman, president and chief executive officer of ONEOK, Inc. and chairman and chief executive officer of ONEOK Partners. "ONEOK Partners' 2007 guidance reflects higher interest expense, reduced margins from gathering and processing, and lower equity earnings from our investment in Northern Border Pipeline," he added.

2006 UPDATED GUIDANCE FOR ONEOK, INC.

The updated segment income statement, capital expenditure forecasts and cash flow projections for 2006 are included in Attachment I. Following are the significant changes in operating income.

The operating income for ONEOK Partners is forecasted at $508 million versus a previous forecast of $498 million. For energy services, operating income is projected at $220 million versus $205 million from the previous forecast, due to greater than expected natural gas sales and optimization opportunities in the fourth quarter.

2006 UPDATED GUIDANCE FOR ONEOK PARTNERS, L.P.

The most significant change in operating income is in the gathering and processing segment where operating income is projected to be $183 million, compared with the previous estimate of $176 million. This improvement is primarily due to strong commodity prices and wider than expected gross processing spreads.

The updated segment income statement and distributable cash flow projections for 2006 are included in Attachment II.

2007 PRELIMINARY GUIDANCE FOR ONEOK, INC.

ONEOK's operating income from its ONEOK Partners segment for 2007 is forecasted at $387 million. For 2006, revised operating income guidance of $508 million includes a $114 million pre-tax gain on the sale of a 20 percent interest in Northern Border Pipeline.

Operating income for the distribution segment for 2007 is projected at $161 million, compared with revised 2006 guidance of $120 million. The increase is due to the recently settled rate increase in Kansas, partially offset by lower margins and higher employee and operating costs in Oklahoma.

In the energy services segment, operating income for 2007 is projected at $205 million, compared with revised guidance of $220 million in 2006. The decrease is primarily due to lower estimated commodity prices and related spreads.

The ONEOK segment income statement projections for 2007 are included in Attachment III.

2007 PRELIMINARY GUIDANCE FOR ONEOK PARTNERS, L.P.

Gathering and processing's 2007 operating income is projected to be $164 million, compared with revised 2006 guidance of $183 million. The decrease is primarily due to lower estimated commodity prices and narrower gross processing spreads.

Natural gas liquids' 2007 operating income is forecasted at $90 million, compared with 2006 guidance of $84 million.

Pipeline and storage's 2007 operating income is estimated to be $100 million, compared with revised 2006 guidance of $107 million.

Interstate natural gas pipelines 2007 operating income is forecasted at $43 million, compared with 2006 guidance of $45 million.

For 2007, guidance also includes higher interest expense associated with the purchase of the assets from ONEOK in April 2006.

The ONEOK Partners segment income statement projections for 2007 are included in Attachment IV.

NON-GAAP FINANCIAL MEASURES

ONEOK Partners has disclosed in this news release forecasted EBITDA and DCF amounts that are non-GAAP financial measures. Management believes EBITDA and DCF provide useful information to investors as a measure of comparison with peer companies. However, these calculations may vary from company to company, so the partnership's computations may not be comparable with those of other companies. DCF is not necessarily the same as available cash as defined in the Partnership Agreements. Management further uses EBITDA to compare the financial performance of its segments and to internally manage those business segments. Reconciliations of forecasted EBITDA to forecasted net income, and forecasted computations of DCF for 2006 and 2007, are included in Attachments II and IV to this release.

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 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 .

Some of the statements contained and incorporated in this news release are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The forward-looking statements relate to: anticipated financial performance; management's plans and objectives for future operations; business prospects; outcome of regulatory and legal proceedings; market conditions and other matters. The Private Securities Litigation Reform Act of 1995 provides a safe harbor for forward-looking statements in certain circumstances. The following discussion is intended to identify important factors that could cause future outcomes to differ materially from those set forth in the forward-looking statements.

Forward-looking statements include the items identified in the preceding paragraph, the information concerning possible or assumed future results of our operations and other statements contained or incorporated in this news release identified by words such as "anticipate," "plan," "estimate," "expect," "forecast," "intend," "believe," "projection," "goal" or similar phrases.

You should not place undue reliance on forward-looking statements. Known and unknown risks, uncertainties and other factors may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by forward- looking statements. Those factors may affect our operations, markets, products, services and prices. In addition to any assumptions and other factors referred to specifically in connection with the forward-looking statements, factors that could cause our actual results to differ materially from those contemplated in any forward-looking statement include, among others, the following:

     *  actions by rating agencies concerning the credit ratings of ONEOK and
        ONEOK Partners;
     *  the effects of weather and other natural phenomena on our operations,
        including energy sales and prices and demand for pipeline capacity;
     *  competition from other U.S. and Canadian energy suppliers and
        transporters as well as alternative forms of energy;
     *  the capital intensive nature of our businesses;
     *  the profitability of assets or businesses acquired by us;
     *  risks of marketing, trading and hedging activities, including the
        risks of changes in energy prices or the financial condition of our
        counterparties;
     *  economic climate and growth in the geographic areas in which we do
        business;
     *  the risk of a significant slowdown in growth or decline in the U.S.
        economy or the risk of delay in growth recovery in the U.S. economy;
     *  the uncertainty of estimates, including accruals and costs of
        environmental remediation;
     *  the timing and extent of changes in commodity prices for natural gas,
        NGLs, electricity and crude oil;
     *  the effects of changes in governmental policies and regulatory
        actions, including changes with respect to income taxes, environmental
        compliance, and authorized rates or recovery of gas and gas
        transportation costs;
     *  the impact of recently issued and future accounting pronouncements and
        other changes in accounting policies;
     *  the possibility of future terrorist attacks or the possibility or
        occurrence of an outbreak of, or changes in, hostilities or changes in
        the political conditions in the Middle East and elsewhere;
     *  the risk of increased costs for insurance premiums, security or other
        items as a consequence of terrorist attacks;
     *  the impact of unforeseen changes in interest rates, equity markets,
        inflation rates, economic recession and other external factors over
        which we have no control, including the effect on pension expense and
        funding resulting from changes in stock and bond market returns;
     *  risks associated with pending or possible acquisitions and
        dispositions, including our ability to finance or integrate any such
        acquisitions and any regulatory delay or conditions imposed by
        regulatory bodies in connection with any such acquisitions and
        dispositions;
     *  the results of administrative proceedings and litigation, regulatory
        actions and receipt of expected regulatory clearances involving the
        OCC, KCC, Texas regulatory authorities or any other local, state or
        federal regulatory body, including the FERC;
     *  our ability to access capital at competitive rates or on terms
        acceptable to us;
     *  risks associated with adequate supply to our gas gathering and
        processing, fractionation and pipeline facilities, including
        production declines which outpace new drilling;
     *  the risk that material weaknesses or significant deficiencies in our
        internal controls over financial reporting could emerge or that minor
        problems could become significant;
     *  the impact of the outcome of pending and future litigation;
     *  the possible loss of gas distribution franchises or other adverse
        effects caused by the actions of municipalities;
     *  the impact of unsold pipeline capacity being greater or less than
        expected;
     *  the ability to market pipeline capacity on favorable terms, including
        the affects of:
          -- future demand for and prices of natural gas;
          -- competitive conditions in the overall natural gas and electricity
             markets;
          -- availability of supplies of Canadian and United States natural
             gas;
          -- availability of additional storage capacity;
          -- weather conditions; and
          -- competitive developments by Canadian and U.S. natural gas
             transmission peers;
     *  orders by the FERC that are significantly different than the
        settlement related to Northern Border Pipeline's November 2005 rate
        case;
     *  our ability to successfully transfer ONEOK Partners' operations from
        Omaha and Denver to Tulsa;
     *  performance of contractual obligations by our customers and shippers;
     *  the ability to recover operating costs and amounts equivalent to
        income taxes, costs of property, plant and equipment and regulatory
        assets in our state and FERC-regulated rates;
     *  timely receipt of approval by applicable governmental entities for
        construction and operation of our pipeline projects and required
        regulatory clearances;
     *  our ability to acquire all necessary rights-of-way permits and
        consents in a timely manner, and our ability to promptly obtain all
        necessary materials and supplies required for construction, and our
        ability to construct pipelines without labor or contractor problems;
     *  our ability to promptly obtain all necessary materials and supplies
        required for construction of gathering, processing and transportation
        facilities;
     *  the composition and quality of the natural gas we gather and process
        in our plants and transport on our pipelines;
     *  the efficiency of our plants in processing natural gas and extracting
        natural gas liquids;
     *  the mechanical integrity of facilities operated;
     *  demand for our services in the proximity of our facilities;
     *  the impact of potential impairment charges;
     *  our ability to control operating costs;
     *  the risk inherent in the use of information systems in our respective
        businesses, implementation of new software and hardware, and the
        impact on the timeliness of information for financial reporting;
     *  acts of nature, sabotage, terrorism or other similar acts causing
        damage to our facilities or our suppliers' or shippers' facilities;
        and
     *  the risk factors listed in the reports we have filed and may file with
        the SEC, which are incorporated by reference.

These factors are not necessarily all of the important factors that could cause actual results to differ materially from those expressed in any of our forward-looking statements. Other factors could also have material adverse effects on our future results. All forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by these factors. Other than as required under securities laws, we undertake no obligation to update publicly any forward-looking statement whether as a result of new information, subsequent events or change in circumstances, expectations or otherwise.

OKE-FG
OKS-FG



    ONEOK, Inc. and Subsidiaries                         Attachment I
    EARNINGS GUIDANCE*

                                              Previous    Updated
                                                2006        2006
                                              Guidance    Guidance     Change

    (In Millions, except per share data)
    Operating Income
    Distribution                                $122        $120         $(2)
    Energy Services                              205         220          15
    ONEOK Partners                               384         394          10
    Gain on sale of assets                       114         114         ---
    Other                                          3           2          (1)
    Operating income                             828         850          22
    Other income/expense                         102         103           1
    Minority interest                           (215)       (218)         (3)
    Interest expense                            (240)       (240)        ---
    Income taxes                                (184)       (192)         (8)
    Net Income                                  $291        $303         $12

    Diluted Earnings Per Share of Common
     Stock                                     $2.55       $2.65       $0.10

    Average Shares of Common Stock -
     Diluted                                   113.9       114.2         0.3



                                               Updated 2006 Guidance
                                    Previous                              12
                                    Guidance  Q1     Q2     Q3     Q4   Months


    Diluted Earnings Per Share of
     Common Stock                    $2.55  $1.17  $0.65  $0.21  $0.63  $2.65



                                              Previous    Updated
                                                2006        2006
    (In Millions)                             Guidance    Guidance     Change

    Capital Expenditures
    Distribution                                $148        $160         $12
    Energy Services                              ---         ---         ---
    ONEOK Partners                               293         293         ---
    Other                                          3          13          10
    Total Capital Expenditures                  $444        $466         $22


    Cash Flow from Operations before
     Change
    in Working Capital                          $724        $735         $11
    Less Dividends                               135         135         ---
    Less Distributions to Minority
     Interests                                   164         165           1
    Less Capital Expenditures                    444         466          22
    Total                                       $(19)       $(31)       $(12)

    *Amounts shown are midpoints of ranges provided.



    ONEOK Partners, L.P. and Subsidiaries               Attachment II
    EARNINGS GUIDANCE *
                                                   Year Ending December 31,
                                             Previous      Updated
                                                2006         2006
                                             Guidance      Guidance     Change
    (In Millions, except per unit
     amounts)

    Operating Income
      Gathering and Processing                  $176        $183          $7
      Natural Gas Liquids                         84          84         ---
      Pipelines and Storage                      105         107           2
      Interstate Pipelines                        45          45         ---
      Coal Slurry and Other                      (26)        (25)          1
      Gain on sale of assets                     114         114         ---
    Operating income                             498         508          10
    Equity earnings from investments              94          97           3
    Other income(expense)                         (3)         (2)          1
    Interest expense, net                       (135)       (135)        ---
    Income taxes                                 (26)        (26)        ---
    Net Income                                  $428        $442         $14

    Net Income                                  $428        $442         $14
    Income allocated to ONEOK related to
     partial
      year ownership                             (36)        (36)        ---
    Income allocated to general partner          (35)        (39)         (4)
    Limited Partners' Interest in Net
     Income                                     $357        $367         $10

    Net Income Per Unit                        $4.84       $4.97       $0.14

    Average Units Outstanding                   73.8        73.8         ---



                                    Previous   Updated 2006 Guidance
                                    Guidance                              12
                                              Q1     Q2     Q3     Q4   Months

    Net Income Per Unit              $4.84  $0.67  $2.22  $1.04  $0.79  $4.97


                                             Previous     Updated
                                               2006         2006
                                             Guidance     Guidance     Change
    Reconciliation of Net Income to
     EBITDA
      Net Income                                $428        $442         $14
      Minority Interest                            2           2         ---
      Interest expense, net                      135         135         ---
      Depreciation and amortization              123         125           2
      Income taxes                                26          26         ---
      AFUDC                                      ---         ---         ---
      EBITDA                                    $714        $730         $16

    Reconciliation of EBITDA to
     Distributable Cash Flow
      EBITDA                                    $714        $730         $16
      Gain on sale of assets                    (114)       (114)        ---
      Interest expense, net                     (135)       (135)        ---
      Maintenance capital expenditures           (59)        (63)         (4)
      Equity earnings from investments           (94)        (97)         (3)
      Distributions received from
       equity investments                        118         118         ---
      Distributable cash flow to ONEOK
       for partial year ownership                (86)        (86)        ---
      Current income tax expense and
       other                                      14          14         ---
      Distributable Cash Flow                   $358        $367          $9

      Distributable Cash Flow
       per Unit                                $4.39       $4.47       $0.08

    *  Amounts shown are midpoints of ranges provided.



    ONEOK, Inc. and Subsidiaries                     Attachment III
    EARNINGS GUIDANCE*


                                                         2007
    (In Millions, except per share data)               Guidance

    Operating Income
    Distribution                                         $161
    Energy Services                                       205
    ONEOK Partners                                        387
    Gain on sale of assets                                ---
    Other                                                   6
    Operating income                                      759
    Other income/expense                                  121
    Minority interest                                    (149)
    Interest expense                                     (266)
    Income taxes                                         (178)
    Net Income                                           $287

    Diluted Earnings Per Share of Common
     Stock                                              $2.55

    Average Shares of Common Stock -
     Diluted                                            112.5

    *Amounts shown are midpoints of ranges provided.



    ONEOK Partners, L.P. and Subsidiaries            Attachment IV
    EARNINGS GUIDANCE *


                                                         2007
                                                       Guidance
    (In Millions, except per unit
     amounts)

    Operating Income
      Gathering and Processing                           $164
      Natural Gas Liquids                                  90
      Pipelines and Storage                               100
      Interstate Pipelines                                 43
      Coal Slurry and Other                               (10)
    Operating income                                      387
    Equity earnings from investments                       80
    Other income(expense)                                   2
    Interest expense, net                                (153)
    Income taxes                                           (1)
    Net Income                                           $315

    Net Income                                           $315
    Income allocated to general partner                   (45)
    Limited Partners' Interest in Net
     Income                                              $270

    Net Income Per Unit                                 $3.26

    Average Units Outstanding                            82.9



                                                       Updated
                                                         2007
                                                       Guidance
    Reconciliation of Net Income to
     EBITDA
      Net Income                                         $315
      Minority Interest                                   ---
      Interest expense, net                               153
      Depreciation and amortization                       114
      Income taxes                                          1
      AFUDC                                               ---
      EBITDA                                             $583

    Reconciliation of EBITDA to
     Distributable Cash Flow
      EBITDA                                             $583
      Interest expense, net                              (153)
      Maintenance capital expenditures                    (65)
      Equity earnings from investments                    (80)
      Distributions received from equity
       investments                                         99
      Current income tax expense and other                  4
      Distributable Cash Flow                            $388

      Distributable Cash Flow per Unit                  $4.12

    *  Amounts shown are midpoints of ranges provided.

     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

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

analysts, Dan Harrison , +1-918-588-7950, or Ellen Konsdorf, +1-877-208-7318, or
media, Megan Washbourne, +1-918-588-7572, or Beth Jensen, +1-402-492-3400, all of
ONEOK, Inc.
www.oneok.com