ONEOK Announces Higher First-quarter 2007 Earnings; Reaffirms Guidance

April 26, 2007

TULSA, Okla., April 26, 2007 /PRNewswire-FirstCall via COMTEX News Network/ -- ONEOK, Inc. (NYSE: OKE) announced today that its first-quarter 2007 net income increased to $152.9 million, or $1.36 per diluted share, compared with $129.5 million, or $1.17 per diluted share, in the same period last year.

The company also reaffirmed its previous 2007 earnings guidance, issued on March 22, 2007, in the range of $2.35 to $2.75 per diluted share.

"All three business segments performed solidly in the quarter," said John W. Gibson, ONEOK chief executive officer. "New rates in Kansas and Texas improved results in our distribution segment, our energy services segment had an exceptionally strong quarter, and ONEOK Partners continued to produce favorable results.

"We continue to benefit from the transactions we completed last April, when we became the sole general partner and owner of 45.7 percent of ONEOK Partners," added Gibson. "The partnership's assets are performing well and provide us a strong platform for future growth, particularly in the natural gas liquids area."

First-quarter 2007 operating income increased 21 percent to $328.3 million from $270.4 million in the same period last year.

Net margin increased to $564.6 million in the first quarter 2007, compared with $501.3 million for the same period in 2006, primarily due to: the implementation of new rate schedules in Kansas and Texas in the distribution segment; increased storage and marketing margins, partially offset by decreased transportation and financial trading margins in the energy services segment; and improved margins in ONEOK Partners' natural gas liquids segment as a result of the higher product price spreads between Mont Belvieu, Texas, and Conway, Kan., and volume growth due to both new supply connections and improved natural gas processing economics.

Equity earnings from investments decreased $7.6 million to $24.1 million in the first quarter 2007, compared with the same period in 2006, primarily as a result of the partnership's April 2006 sale of a 20 percent interest in the Northern Border Pipeline to an affiliate of TransCanada. First-quarter 2007 equity earnings reflect 50 percent of the pipeline's income being recorded, compared with 70 percent of the income being recorded in the first quarter of 2006.

Results for 2006 are reported as if the April 2006 transaction in which ONEOK Partners purchased assets from ONEOK had occurred on Jan. 1, 2006.

    FIRST-QUARTER 2007 HIGHLIGHTS INCLUDE:

     *  Operating income of $328.3 million, compared with $270.4 million in
        the first quarter last year;
     *  ONEOK Partners segment operating income of $104.4 million, compared
        with $100.2 million in the first quarter 2006;
     *  Distribution segment operating income of $103.2 million, compared with
        $76.8 million in the first quarter 2006;
     *  Energy services segment operating income of $120.1 million,
        compared with $93.3 million in the first quarter 2006;

     *  Operating costs of $238.5 million versus $232.2 million in the first
        quarter 2006;
     *  A quarterly dividend increase in January 2007 to 34 cents per share;
     *  ONEOK Partners' announcements of the $260 million, 440-mile natural
        gas liquids Arbuckle Pipeline from southern Oklahoma through northern
        Texas and continuing on to the Texas Gulf Coast and the $120 million,
        150-mile lateral pipeline from the Piceance Basin to the previously
        announced Overland Pass Pipeline; these pipelines are part of the
        partnership's $1.5 billion in ongoing growth projects that will in
        turn benefit ONEOK;
     *  Distributions from the company's general partner interest in ONEOK
        Partners of $13.3 million in the first quarter 2007; distributions
        from the company's limited partner interest in ONEOK Partners were
        $36.6 million in the first quarter 2007;
     *  ONEOK, on a stand-alone basis, having no short-term debt at
        March 31, 2007, $667.8 million of cash and temporary investments and
        $316.5 million of gas in storage;
     *  ONEOK stand-alone long-term debt of 48 percent of capitalization;
        consolidated long-term debt of 65 percent of total capitalization;
     *  ONEOK stand-alone cash flow from continuing operations, before changes
        in working capital, of $210.9 million, which exceeded capital
        expenditures and dividends of $66.9 million by $144.0 million;
        consolidated cash flow from continuing operations, before changes in
        working capital, of $284.5 million, which exceeded capital
        expenditures, dividends and minority interest distributions of $189.7
        million by $94.8 million; and
     *  Being named the most admired company in the energy industry by FORTUNE
        magazine.

    FIRST-QUARTER BUSINESS UNIT RESULTS

ONEOK Partners

Operating income for the first quarter 2007 was $104.4 million, compared with $100.2 million in the same period 2006. Net margin was $205.1 million, compared with $201.7 million in the same period 2006. First-quarter results reflect increased margins in the natural gas liquids segment as a result of higher product price spreads between Mont Belvieu, Texas, and Conway, Kan., as well as volume growth due to both new supply connections and improved natural gas processing economics. These results were partially offset by lower processed volumes in the gathering and processing segment, due to anticipated contract terminations.

First-quarter 2007 operating costs were $75.5 million, compared with $75.4 million in the first quarter 2006.

Equity earnings from investments decreased to $24.1 million in the first quarter 2007, compared with $31.6 million in the first quarter 2006, as a result of ONEOK Partners' 70 percent interest in Northern Border Pipeline decreasing to 50 percent.

Distribution

The distribution segment reported operating income of $103.2 million in the first quarter 2007, compared with operating income of $76.8 million in the first quarter 2006. Net margin for the first quarter 2007 was $227.2 million, compared with net margin of $195.4 million in the same period a year earlier.

The first-quarter 2007 net margin increase is the result of an increase of $21.1 million from the implementation of new rate schedules -- $18.9 million in Kansas and $2.2 million in Texas -- and an increase of $10.6 million from higher customer sales due to a return to more normal weather in the segment's service territories.

Operating costs were $95.7 million, compared with $90.5 million in the first quarter 2006. The variance is the result of an increase of $4.2 million in labor and employment benefit costs; an increase of $1.7 million in property taxes; partially offset by a decrease of $2.2 million in bad debt expense.

Residential and commercial volumes increased for the three-month period due to more normal weather patterns when compared with the unseasonably warm winter weather in the first quarter of 2006.

Energy Services

The energy services segment reported first-quarter 2007 operating income of $120.1 million, compared with operating income of $93.3 million in the same period in 2006. The increase was due to increased storage and marketing margins, partially offset by decreased transportation, financial trading and retail margins.

Net margin was $131.4 million, an increase of $28.2 million for the first quarter of 2007, compared with $103.2 million in the same period of 2006.

The net margin improvement is due to a net increase of $60.6 million in storage and marketing margins related primarily to higher seasonal storage spreads and optimization activities; a decrease of $22.1 million in transportation margins, net of hedging activities, caused by lower Mid- Continent margins and changes in the fair value of derivative instruments; and a decrease of $7.9 million in financial trading margins.

Operating costs for the quarter were $10.7 million, compared with $9.3 million in the same period a year earlier, primarily due to higher employee- related expenses.

Natural gas volumes marketed increased for the three-month period in 2007, compared with 2006. The increase was due to a return to more normal weather in the first quarter 2007, primarily occurring in January, compared with 2006.

Natural gas in storage at March 31, 2007, was 37.3 Bcf, compared with 42.3 Bcf at March 31, 2006. At April 24, 2007, total natural gas in storage was approximately 48.0 Bcf. Total natural gas storage capacity under lease was 88 Bcf in the first quarter 2007, compared with 86 Bcf in the same period 2006. Currently, natural gas storage capacity under lease is 96 Bcf.

    The net margin for the energy services segment was derived from the
following sources:



                                                      Three Months Ended
                                                           March 31,
                                                    2007              2006
                                                    (Thousands of dollars)
    Marketing and storage, gross                  $177,106          $135,068
    Less:  Storage and transportation costs        (52,713)          (49,259)
      Marketing and storage, net                   124,393            85,809
    Retail marketing                                 2,994             5,449
    Financial trading                                4,017            11,896
    Net margin                                    $131,404          $103,154



EARNINGS CONFERENCE CALL

ONEOK and ONEOK Partners management will conduct a joint conference call on Friday, April 27, 2007, at 11 a.m. Eastern Daylight Time (10 a.m. Central Daylight Time). The call will also be carried live on ONEOK's and ONEOK Partners' Web sites.

To participate in the telephone conference call, dial 866-837-9782, pass code 1065012, or log on to http://www.oneok.com or http://www.oneokpartners.com .

If you are unable to participate in the conference call or the webcast, the replay will be available on ONEOK's Web site, http://www.oneok.com , and ONEOK Partners' Web site, http://www.oneokpartners.com , for 30 days. A recording will be available by phone for seven days. The playback call may be accessed at 866-837-8032, pass code 696102.

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.

For information about ONEOK, Inc. visit the Web site: 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 our anticipated financial performance, management's plans and objectives for our future operations, our business prospects, the 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," "estimate," "expect," "project," "intend," "plan," "believe," "should," "goal," "forecast" or other 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 and other 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 U.S. natural gas;
          -- availability of additional storage capacity;
          -- weather conditions; and
          -- competitive developments by Canadian and U.S. natural gas
             transmission peers;
     *  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;
     *  our ability to control construction costs and completion schedules of
        our pipeline projects and other projects;
     *  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
        NGLs;
     *  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. These and other risks are described in greater detail under Part I, Item 1A, "Risk Factors," in our Annual Report on Form 10- K for the year ended December 31, 2006, available on the ONEOK Web site. 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.

    ONEOK, Inc. and Subsidiaries
    CONSOLIDATED STATEMENTS OF INCOME
                                                      Three Months Ended
                                                           March 31,
    (Unaudited)                                     2007              2006
               (Thousands of dollars, except per share amounts)

    Revenues
    Operating revenues, excluding energy
     trading revenues                           $3,797,658        $3,840,334
    Energy trading revenues, net                     1,348             7,370
    Total Revenues                               3,799,006         3,847,704
    Cost of sales and fuel                       3,234,379         3,346,419
    Net Margin                                     564,627           501,285
    Operating Expenses
    Operations and maintenance                     158,420           157,506
    Depreciation, depletion and amortization        56,450            56,325
    General taxes                                   23,659            18,383
    Total Operating Expenses                       238,529           232,214
    Gain on Sale of Assets                           2,203             1,305
    Operating Income                               328,301           270,376
    Equity earnings from investments                24,055            31,641
    Other income                                     6,341             4,480
    Other expense                                      645             5,260
    Interest expense                                62,012            55,585
    Income before Minority Interests and
     Income Taxes                                  296,040           245,652
    Minority interests in income of
     consolidated subsidiaries                      45,313            35,772
    Income taxes                                    97,847            80,141
    Income from Continuing Operations              152,880           129,739
    Discontinued operations, net of taxes
      Income (loss) from operations of
       discontinued components, net of tax             ---              (247)
      Net Income                                  $152,880          $129,492
    Earnings Per Share of Common Stock
      Net earnings per share, basic                  $1.38             $1.21
      Net earnings per share, diluted                $1.36             $1.17
    Average Shares of Common Stock (Thousands)
      Basic                                        110,868           107,143
      Diluted                                      112,724           110,756
      Dividends Declared Per Share of
       Common Stock                                  $0.34             $0.28



    ONEOK, Inc. and Subsidiaries
    CONSOLIDATED BALANCE SHEETS
                                                 March 31,       December 31,
    (Unaudited)                                    2007              2006
    Assets                                         (Thousands of dollars)

    Current Assets
      Cash and cash equivalents                   $225,510           $68,268
      Temporary investments                        538,030            31,125
      Trade accounts and notes receivable,
       net                                       1,286,444         1,348,490
      Gas and natural gas liquids in
       storage                                     499,058           925,194
      Commodity exchanges                           67,514            53,433
      Energy marketing and risk management
       assets                                      137,726           401,670
      Other current assets                         326,066           296,781
        Total Current Assets                     3,080,348         3,124,961

    Property, Plant and Equipment
      Property, plant and equipment              6,816,441         6,724,759
      Accumulated depreciation, depletion
       and amortization                          1,914,845         1,879,838
        Net Property, Plant and Equipment        4,901,596         4,844,921

    Deferred Charges and Other Assets
      Goodwill and intangibles                   1,049,523         1,051,440
      Energy marketing and risk management
       assets                                       44,715            91,133
      Investments in unconsolidated affiliates     746,383           748,879
      Other assets                                 526,346           529,748
        Total Deferred Charges and Other Assets  2,366,967         2,421,200

        Total Assets                           $10,348,911       $10,391,082



    ONEOK, Inc. and Subsidiaries
    CONSOLIDATED BALANCE SHEETS
                                                  March 31,       December 31,
                                                    2007              2006
    Liabilities and Shareholders' Equity            (Thousands of dollars)

    Current Liabilities
      Current maturities of long-term debt        $420,466           $18,159
      Notes payable                                    ---             6,000
      Accounts payable                           1,073,934         1,076,954
      Commodity exchanges and imbalances           183,064           176,451
      Energy marketing and risk management
       liabilities                                 308,445           306,658
      Other                                        357,923           366,316
        Total Current Liabilities                2,343,832         1,950,538

    Long-term Debt, excluding current
     maturities                                  3,627,043         4,030,855

    Deferred Credits and Other Liabilities
      Deferred income taxes                        762,637           707,444
      Energy marketing and risk management
       liabilities                                  57,071           137,312
      Other deferred credits                       548,674           548,330
        Total Deferred Credits and Other
         Liabilities                             1,368,382         1,393,086

    Commitments and Contingencies

    Minority Interests in Consolidated
     Subsidiaries                                  798,878           800,645

    Shareholders' Equity
      Common stock, $0.01 par value:
       authorized 300,000,000 shares; issued
        120,637,951 shares and outstanding
        110,982,237 shares at March 31, 2007;
        issued 120,333,908 shares and
        outstanding 110,678,499 shares at
        December 31, 2006                            1,206             1,203
      Paid in capital                            1,263,112         1,258,717
      Accumulated other comprehensive
       income (loss)                               (65,373)           39,532
      Retained earnings                          1,371,948         1,256,759
      Treasury stock, at cost: 9,655,714
       shares at March 31, 2007 and 9,655,409
       shares at December 31, 2006                (360,117)         (340,253)
        Total Shareholders' Equity               2,210,776         2,215,958

    Total Liabilities and Shareholders'
     Equity                                    $10,348,911       $10,391,082



    ONEOK, Inc. and Subsidiaries
    CONSOLIDATED STATEMENTS OF CASH FLOWS

                                                     Three Months Ended
                                                          March 31,
    (Unaudited)                                    2007               2006
                                                    (Thousands of Dollars)
    Operating Activities
      Net income                                 $152,880           $129,492
      Depreciation, depletion, and amortization    56,450             56,325
      Gain on sale of assets                       (2,203)            (1,305)
      Minority interest in income of
       consolidated subsidiaries                   45,313             35,772
      Distributions received from
       unconsolidated affiliates                   26,455             40,708
      Income from equity investments              (24,055)           (31,641)
      Deferred income taxes                        19,499             38,623
      Stock-based compensation expense              8,212              1,510
      Allowance for doubtful accounts               1,974              4,182
      Changes in assets and liabilities
      (net of acquisition and disposition effects):
        Accounts and notes receivable              60,072            669,231
        Inventories                               425,279            280,054
        Unrecovered purchased gas costs            19,911            (27,081)
        Commodity exchanges                        (7,468)           (16,554)
        Deposits                                   79,641             48,202
        Regulatory assets                              (8)             7,632
        Accounts payable and accrued liabilities   42,407           (364,945)
        Energy marketing and risk management
         assets and liabilities                    61,128            (62,480)
        Other assets and liabilities              (91,272)           (10,075)
        Cash Provided by Operating Activities     874,215            797,650
    Investing Activities
      Changes in investments in unconsolidated
       affiliates                                    (141)            (5,711)
      Capital expenditures                       (107,035)           (54,552)
      Changes in temporary investments           (506,905)               ---
      Proceeds from sale of assets                  3,707                ---
      Increase in cash and cash equivalents
       for previously unconsolidated subsidiaries     ---              1,334
      Decrease in cash and cash equivalents
       for previously consolidated subsidiaries       ---            (22,039)
      Other investing activities                      ---              1,102
        Cash Used in Investing Activities        (610,374)           (79,866)
    Financing Activities
      Borrowing (repayment) of notes payable,
       net                                            ---           (135,500)
      Short term financing payments                (6,000)        (1,110,000)
      Short term financing borrowings                 ---            237,000
      Payment of debt                                (520)           (32,241)
      Equity unit conversion                          ---            402,447
      Repurchase of common stock                  (20,089)            (1,408)
      Issuance of common stock                      2,680              1,333
      Dividends paid                              (37,691)           (27,344)
      Distributions to minority interests         (44,979)           (35,711)
      Other financing activities                      ---            (44,895)
        Cash Used in Financing Activities        (106,599)          (746,319)
          Change in Cash and Cash Equivalents     157,242            (28,535)
          Cash and Cash Equivalents at
           Beginning of Period                     68,268              7,915
          Effect of Accounting Change on Cash
           and Cash Equivalents                       ---             43,090
          Cash and Cash Equivalents at End of
           Period                                $225,510            $22,470



    ONEOK, Inc. and Subsidiaries
    INFORMATION AT A GLANCE
                                                        Quarters Ended
                                                           March 31,
    (Unaudited)                                      2007             2006
                                                     (Millions of dollars)
    ONEOK Partners
    Net margin                                     $205.1           $201.7
    Operating costs                                 $75.5            $75.4
    Depreciation, depletion and amortization        $27.5            $27.5
    Operating income                               $104.4           $100.2
    Total gas gathered (BBtu/d)                     1,168            1,145
    Total gas processed (BBtu/d)                      609              931
    Natural gas liquids gathered (MBbl/d)             210              193
    Natural gas liquids sales (MBbl/d)                220              220
    Natural gas liquids fractionated (MBbl/d)         319              281
    Natural gas liquids transported (MBbl/d)          205              193
    Natural gas transported (MMcf/d)                2,611            2,538
    Natural gas sales (BBtu/d)                        271              311
    Capital expenditures                            $77.9            $17.7
    Realized composite NGL sales prices ($/gallon)  $0.82            $0.87
    Realized condensate sales price ($/Bbl)        $56.53           $57.67
    Realized natural gas sales price ($/MMBtu)      $6.58            $7.99
    Realized gross processing spread ($/MMBtu)      $3.59            $3.43

    Distribution
    Net margin                                     $227.2           $195.4
    Operating costs                                 $95.7            $90.5
    Depreciation, depletion and amortization        $28.3            $28.2
    Operating income                               $103.2            $76.8
    Customers per employee                            745              712
    Capital expenditures                            $27.0            $36.7
    Natural gas volumes (MMcf)
      Gas Sales                                    78,774           74,137
      Transportation                               57,609           56,960
    Natural gas margins
      Gas Sales                                    $193.5           $162.8
      Transportation                                $24.7            $22.5

    Energy Services
    Net margin                                     $131.4           $103.2
    Operating costs                                 $10.7             $9.3
    Depreciation, depletion and amortization         $0.5             $0.6
    Operating income                               $120.1            $93.3
    Natural gas marketed (Bcf)                        337              310
    Natural gas gross margin ($/Mcf)                $0.34            $0.28
    Physically settled volumes (Bcf)                  639              602



    ONEOK, Inc. and Subsidiaries
    Consolidating Income Statement



                                      Quarter Ended March 31, 2007
                                            ONEOK   Consolidating
    (Unaudited)               ONEOK        Partners    Entries   Consolidated
                                          (Millions of dollars)
    Operating Income
      ONEOK Partners         $ ---          $104         $---        $104
      Distribution             103           ---          ---         103
      Energy Services          120           ---          ---         120
      Other                      1           ---          ---           1
    Operating Income           224           104          ---         328


    Equity in earnings of
     ONEOK Partners             51           ---          (51)        ---
    Other income (expense)       3            27          ---          30
    Interest expense           (30)          (32)         ---         (62)
    Minority interest          ---           ---          (45)        (45)
    Income Taxes               (95)           (3)         ---         (98)

    Net Income                $153           $96         $(96)       $153


                                    Quarter Ended March 31, 2006
                                            ONEOK   Consolidating
    (Unaudited)               ONEOK        Partners    Entries   Consolidated
                                          (Millions of dollars)
    Operating Income
      ONEOK Partners         $ ---         $100          $---        $100
      Distribution              77          ---           ---          77
      Energy Services           93          ---           ---          93
      Other                    ---          ---           ---         ---
    Operating Income           170          100           ---         270


    Equity in earnings of
     ONEOK Partners             37          ---           (37)        ---
    Other income (expense)      (2)          33           ---          31
    Interest expense           (20)         (36)          ---         (56)
    Minority interest          ---           (2)          (34)        (36)
    Income Taxes               (56)         (24)          ---         (80)

    Net Income                $129          $71          $(71)       $129



    ONEOK, Inc. and Subsidiaries
    REGULATION G GAAP RECONCILIATION
    ONEOK, Inc. Stand-Alone Cash Flow, Before Changes in Working Capital


                                                Three Months Ended
    (Unaudited)                                    March 31, 2007
                                               (Millions of dollars)
    Net income                                        $152.9
    Depreciation, depletion and amortization            28.9
    Distributions received from unconsolidated
     affiliates                                         49.9
    Income from equity investments, net                (50.5)
    Deferred income taxes                               19.5
    Stock based compensation expense                     8.2
    Allowance for doubtful accounts                      2.0
    Cash flow, before changes in working capital(a)   $210.9

    (a) ONEOK, Inc. stand-alone cash flow, before changes in working capital,
        is a non-GAAP financial measure used by management, industry analysts,
        investors, lenders, and rating agencies to assess the financial
        performance and the operating results of our fundamental business
        activities.  ONEOK, Inc. stand-alone cash flow, before changes in
        working capital, should not be considered in isolation or as a
        substitute for net income, income from operations, or other measures
        of cash flow.



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

OKE-FE


SOURCE ONEOK, Inc.

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