The following discussion and analysis should be read in conjunction with Part I,
Item 1, Business, our audited Consolidated Financial Statements and the Notes to
Consolidated Financial Statements in this Annual Report.

RECENT DEVELOPMENTS

Please refer to the "Financial Results and Operating Information" and "Liquidity and Capital Resources" sections of Management's Discussion and Analysis of Financial Condition and Results of Operations in this Annual Report for additional information.



Market Conditions - Volumes increased across our system in our Natural Gas
Gathering and Processing and Natural Gas Liquids segments in 2019, compared with
2018, which resulted in higher fee-based earnings, primarily as a result of our
completed capital-growth projects, continued drilling and producer improvements
in production due to enhanced completion techniques, offset partially by natural
production declines.

We experienced fluctuating NGL location price differentials due to increased
supply, increased demand in the Mid-Continent region, infrastructure constraints
and slower demand growth in the Gulf Coast due primarily to delays in the
startup of petrochemical facilities and constrained NGL export facilities. The
Conway-to-Mont Belvieu OPIS price differential for ethane in ethane/propane mix
averaged $0.07 per gallon in 2019, compared with $0.15 per gallon in 2018, which
resulted in lower

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earnings from our optimization and marketing activities in our Natural Gas Liquids segment. We expect narrower NGL location price differentials in 2020.



Ethane Opportunity - Ethane volumes under long-term contracts delivered to our
NGL system averaged 385 MBbl/d in 2019, compared with 380 MBbl/d in 2018, and
have generally been increasing since 2017, primarily as a result of NGL demand
increasing from exports and petrochemical companies completing ethylene
production projects and plant expansions. Our NGL capital-growth projects are
expected to help alleviate system constraints, enabling additional NGLs,
including ethane, to reach the Mont Belvieu, Texas, market center.

Northern Border Pipeline, which provides key natural gas takeaway capacity out
of the Williston Basin, recently notified shippers that it plans to place
restrictions on the Btu content of the residue natural gas it receives in order
to meet downstream pipeline specifications. When these restrictions take effect,
natural gas processors in the Williston Basin may recover incremental ethane
into the NGL stream in order to lower the Btu content of the residue natural gas
delivered to Northern Border Pipeline. As a result, ethane deliveries to our NGL
system may increase.

Growth Projects - Our announced large capital-growth projects that have recently
been completed or are currently under construction are outlined in the tables
below:
                                                           Approximate       Expected
      Project                       Scope                   Costs (a)       Completion
Natural Gas Gathering and Processing                      (In millions)
Demicks Lake I plant 200 MMcf/d processing plant and          $400          Completed
and related          related gathering infrastructure in                   October 2019
infrastructure       the core of the Williston Basin
                     Supported by acreage dedications
                     with long-term primarily fee-based
                     contracts
Demicks Lake II      200 MMcf/d processing plant and          $410          Completed
plant and related    related gathering infrastructure in                   January 2020
infrastructure       the core of the Williston Basin
                     Supported by acreage dedications
                     with long-term primarily fee-based
                     contracts
Bear Creek plant     200 MMcf/d processing plant              $405      First Quarter 2021
expansion and        expansion and related gathering
related              infrastructure in the Williston
infrastructure       Basin
                     Supported by acreage dedications
                     with long-term primarily fee-based
                     contracts
Demicks Lake III     200 MMcf/d processing plant and          $305      Third Quarter 2021
plant and related    related gathering infrastructure in
infrastructure       the core of the Williston Basin
                     Supported by acreage dedications
                     with primarily fee-based contracts

(a) - Excludes capitalized interest/AFUDC.


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                                                          Approximate    Expected
      Project                       Scope                  Costs (a)    Completion
Natural Gas Liquids
Elk Creek pipeline   900-mile NGL pipeline from the         $1,400      Completed
and related          Williston Basin to the Mid-Continent             December 2019
infrastructure       region, with capacity of up to                        (b)
                     240 MBbl/d, and related
                     infrastructure
                     Anchored by long-term contracts
                     Expansion capability up to 400
                     MBbl/d with additional pump
                     facilities
Arbuckle II pipeline 530-mile NGL pipeline from the STACK   $1,360    First Quarter
and related          area to Mont Belvieu, Texas, with                     2020
infrastructure       initial capacity up to approximately
                     400 MBbl/d, and related
                     infrastructure
                     Supported by long-term contracts
                     Expansion capability up to 1 MMBbl/d

West Texas LPG Increasing mainline capacity by 80 $295 First Quarter pipeline expansion MBbl/d with additional pump


2020
and Arbuckle II      facilities and pipeline looping
connection           Connecting West Texas LPG pipeline
                     system to the Arbuckle II pipeline
                     Supported by long-term dedicated
                     production from six third-party
                     processing plants expected to
                     produce up to 60 MBbl/d
MB-4 fractionator    125 MBbl/d NGL fractionator in Mont     $575     First Quarter
and related          Belvieu, Texas, and related                         2020 (c)
infrastructure       infrastructure, which includes
                     additional NGL storage in Mont
                     Belvieu
                     Fully contracted with long-term
                     contracts
Bakken NGL pipeline  75-mile NGL pipeline in the             $100     Fourth Quarter
extension            Williston Basin connecting to a                       2020
                     third-party processing plant
                     Supported by a long-term contract
                     with a minimum volume commitment
Arbuckle II          Provide additional takeaway capacity    $240     First Quarter
extension project    in the STACK area                                     2021
and additional
gathering            Allow increasing volumes on the Elk
infrastructure       Creek pipeline access to
                     fractionation capacity at Mont
                     Belvieu, Texas

Arbuckle II pipeline Increasing mainline capacity with $60 First Quarter expansion

            additional pump facilities                            

2021


                     Increases capacity to 500 MBbl/d
MB-5 fractionator    125 MBbl/d NGL fractionator in Mont     $750     First Quarter
and related          Belvieu, Texas, and related                           2021
infrastructure       infrastructure, which includes
                     additional NGL storage in Mont
                     Belvieu
                     Fully contracted with long-term
                     contracts

West Texas LPG Increasing mainline capacity by 40 $145 First Quarter pipeline expansion MBbl/d


2021
                     Supported by long-term dedicated
                     production from third-party
                     processing plants expected to
                     produce up to 45 MBbl/d
Mid-Continent        65 MBbl/d of expansions at our          $150     First Quarter
fractionation        Mid-Continent NGL facilities                        2021 (d)
facility expansions
West Texas LPG       Increasing mainline capacity by 100     $310     Second Quarter
pipeline expansion   MBbl/d                                                

2021


                     Fully contracted with long-term
                     dedicated production from
                     third-party processing plants
Elk Creek pipeline   Increasing mainline capacity to 400     $305     Third Quarter
expansion            MBbl/d with additional pump                         2021 (e)
                     facilities
                     Supported by long-term dedicated
                     production from ONEOK and
                     third-party processing plants


(a) - Excludes capitalized interest/AFUDC.
(b) - In July 2019, we completed the southern section of the pipeline from the
Powder River Basin to our existing Mid-Continent NGL facilities. In December
2019, we completed the northern section of the pipeline from the Williston Basin
to the Powder River Basin.
(c) - We completed 75 MBbl/d in December 2019, with the remaining 50 MBbl/d to
be completed in the first quarter 2020.
(d) - We expect to complete 15 MBbl/d in the third quarter 2020, with the
remaining 50 MBbl/d expected to be completed in the first quarter 2021.
(e) - We expect a portion of this incremental capacity to be available as early
as first quarter 2021.

Debt Issuances and Repayments - In August 2019, we completed an underwritten
public offering of $2.0 billion senior unsecured notes consisting of $500
million, 2.75% senior notes due 2024; $750 million, 3.4% senior notes due 2029;
and $750 million, 4.45% senior notes due 2049. The net proceeds, after deducting
underwriting discounts, commissions and offering expenses, were $1.97 billion
and were used for general corporate purposes, including funding of capital
expenditures and repayment of existing indebtedness. Repayments included the
redemption of our $300 million, 3.8% senior notes due March

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2020 at a redemption price of $308 million in September 2019 and the repayment of $250 million of our $1.5 Billion Term Loan agreement in August 2019.



In March 2019, we completed an underwritten public offering of $1.25 billion
senior unsecured notes consisting of $700 million, 4.35% senior notes due 2029
and an additional issuance of $550 million of our existing 5.2% senior notes due
2048. The net proceeds, after deducting underwriting discounts, commissions and
offering expenses, and exclusive of accrued interest, were $1.23 billion. During
the six months ended June 30, 2019, we drew the remaining $950 million under our
$1.5 Billion Term Loan Agreement. The proceeds were used for general corporate
purposes, including repayment of existing indebtedness and funding capital
expenditures.

Also, in March 2019, we repaid our $500 million, 8.625% senior notes at maturity with a combination of cash on hand and short-term borrowings.



Dividends - During 2019, we paid dividends totaling $3.53 per share, an increase
of 9% from the $3.245 per share paid in 2018. In February 2020, we paid a
quarterly dividend of $0.935 per share ($3.74 per share on an annualized basis),
an increase of 9% compared with the same quarter in the prior year. Our dividend
growth is due to the increase in cash flows resulting from the continued growth
of our operations.

FINANCIAL RESULTS AND OPERATING INFORMATION

Consolidated Operations

Selected Financial Results - The following table sets forth certain selected consolidated financial results for the periods indicated:


                                                                                       Variances
                                      Years Ended December 31,             2019 vs. 2018      2018 vs. 2017
Financial Results                2019           2018           2017               Increase (Decrease)
                                                          (Millions of dollars)
Revenues
Commodity sales              $  8,916.1     $ 11,395.6     $  9,862.7     $     (2,479.5 )   $      1,532.9
Services                        1,248.3        1,197.6        2,311.2               50.7           (1,113.6 )
Total revenues                 10,164.4       12,593.2       12,173.9           (2,428.8 )            419.3
Cost of sales and fuel
(exclusive of items shown
separately below)               6,788.0        9,422.7        9,538.0           (2,634.7 )           (115.3 )
Operating costs                   982.9          907.0          822.7               75.9               84.3
Depreciation and
amortization                      476.5          428.6          406.3               47.9               22.3
Impairment of long-lived
assets                                -              -           16.0                  -              (16.0 )
(Gain) loss on sale of
assets                              2.6           (0.6 )         (0.9 )             (3.2 )             (0.3 )
Operating income             $  1,914.4     $  1,835.5     $  1,391.8     $         78.9     $        443.7
Equity in net earnings
from investments             $    154.5     $    158.4     $    159.3     $         (3.9 )   $         (0.9 )
Impairment of equity
investments                  $        -     $        -     $     (4.3 )   $            -     $         (4.3 )
Interest expense, net of
capitalized interest         $   (491.8 )   $   (469.6 )   $   (485.7 )   $         22.2     $        (16.1 )
Net income                   $  1,278.6     $  1,155.0     $    593.5     $        123.6     $        561.5
Adjusted EBITDA              $  2,580.2     $  2,447.5     $  1,986.9     $        132.7     $        460.6
Capital expenditures         $  3,848.3     $  2,141.5     $    512.4     $      1,706.8     $      1,629.1

See reconciliation of net income to adjusted EBITDA in the "Adjusted EBITDA" section.



Changes in commodity prices and sales volumes affect both revenues and cost of
sales and fuel in our Consolidated Statements of Income, and, therefore, the
impact is largely offset between these line items.

2019 vs. 2018 - Operating income increased primarily as a result of the following: • Natural Gas Gathering and Processing - an increase of $95.5 million due

primarily to natural gas volume growth, offset partially by a decrease of

$20.9 million due primarily to lower realized NGL and natural gas prices,


       net of hedges;



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• Natural Gas Liquids - an increase of $148.1 million in exchange services

due primarily to higher volumes and average fee rates, offset partially by

a decrease of $60.2 million in optimization and marketing due primarily to


       wider location price differentials in the prior year; and


•      Natural Gas Pipelines - an increase of $56.5 million from higher

transportation services, offset partially by a decrease of $9.1 million


       from lower net retained fuel and timing of equity gas sales; offset
       partially by

• an increase of $75.9 million in operating costs due primarily to higher

employee-related costs associated with labor and benefits, spending on

routine maintenance projects and ad valorem taxes due to the growth of our

operations; and

• an increase of $47.9 million in depreciation expense due to capital

projects placed in service.





Net income increased for the year ended December 31, 2019, compared with the
same period in 2018, due to the items discussed above and higher allowance for
equity funds used during construction related to our capital-growth projects,
offset partially by higher interest expense related to our underwritten public
debt offerings in March and August 2019.

Capital expenditures increased due primarily to spending on our announced capital-growth projects.

Additional information regarding our financial results and operating information is provided in the discussions for each of our segments.



Selected Financial Results and Operating Information the Year Ended December 31,
2018 vs. 2017 - The consolidated and segment financial results and operating
information for the year ended December 31, 2018, compared with the year ended
December 31, 2017, are included in Part II, Item 7, Management's Discussion and
Analysis of Financial Condition and Results of Operations of our 2018 Annual
Report on Form 10-K, which is available via the SEC's website at www.sec.gov and
our website at www.oneok.com.

Natural Gas Gathering and Processing



Growth Projects - Our Natural Gas Gathering and Processing segment is investing
in growth projects in NGL-rich areas in the Williston Basin that we expect will
enable us to meet the needs of crude oil and natural gas producers in those
areas. See "Growth Projects" in the "Recent Developments" section for discussion
of our announced capital-growth projects.

For a discussion of our capital expenditure financing, see "Capital Expenditures" in the "Liquidity and Capital Resources" section.

Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Gathering and Processing segment for the periods indicated:


                                                                                       Variances
                                       Years Ended December 31,             2019 vs. 2018     2018 vs. 2017
Financial Results                 2019           2018           2017              Increase (Decrease)
                                                          (Millions of dollars)
NGL sales                     $  1,024.3     $  1,567.2     $  1,208.0     $      (542.9 )   $       359.2
Condensate sales                   200.1          208.8          103.2              (8.7 )           105.6

Residue natural gas sales 966.1 1,084.2 856.3

       (118.1 )           227.9
Gathering, compression,
dehydration and processing
fees and other revenue             178.1          174.4          859.1               3.7            (684.7 )
Cost of sales and fuel
(exclusive of depreciation
and operating costs)            (1,302.3 )     (2,041.4 )     (2,216.4 )          (739.1 )          (175.0 )
Operating costs, excluding
noncash compensation
adjustments                       (352.8 )       (357.7 )       (302.6 )            (4.9 )            55.1
Equity in net earnings
(loss) from investments,
excluding noncash
impairment charges                  (6.3 )          0.4           12.1              (6.7 )           (11.7 )
Other                               (4.5 )         (4.3 )         (1.2 )            (0.2 )            (3.1 )
Adjusted EBITDA               $    702.7     $    631.6     $    518.5     $        71.1     $       113.1
Impairment of equity
investments                   $        -     $        -     $     (4.3 )   $           -     $        (4.3 )
Capital expenditures          $    926.5     $    694.6     $    284.2     $       231.9     $       410.4

See reconciliation of net income to adjusted EBITDA in the "Adjusted EBITDA" section.



Changes in commodity prices and sales volumes affect both revenue and cost of
sales and fuel, and, therefore, the impact is largely offset between these line
items.

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2019 vs. 2018 - Adjusted EBITDA increased $71.1 million, primarily as a result
of the following:
•      an increase of $95.5 million due primarily to natural gas volume growth in

the Williston Basin and STACK and SCOOP areas, offset partially by natural

production declines; and

• a decrease of $4.9 million in operating costs due primarily to lower

outside services and materials and supplies, offset partially by higher

employee-related costs and ad valorem taxes due primarily to the growth of


       our operations; offset partially by


•      a decrease of $20.9 million due primarily to lower realized NGL and
       natural gas prices, net of hedges; and

• a decrease of $6.7 million due primarily to lower equity in net earnings

from investments due to a decrease in supply volumes in the dry natural

gas area of the Powder River Basin.





Capital expenditures increased due primarily to spending on our announced
capital-growth projects.

                                               Years Ended December 31,
Operating Information (a)                      2019           2018      2017
Natural gas gathered (BBtu/d)                2,753            2,546     

2,211


Natural gas processed (BBtu/d) (b)           2,555            2,382     

2,056


NGL sales (MBbl/d)                             224              198       

187


Residue natural gas sales (BBtu/d) (b)       1,201            1,088       896
Average fee rate ($MMBtu)                $    0.92           $ 0.90    $ 0.86

(a) - Includes volumes for consolidated entities only. (b) - Includes volumes at company-owned and third-party facilities.



2019 vs. 2018 - Natural gas gathered, natural gas processed, NGL sales and
residue natural gas sales volumes increased in 2019, compared with 2018, due
primarily to our capital-growth projects and continued producer improvements in
production due to enhanced completion techniques, offset partially by natural
production declines.

Commodity Price Risk - See discussion regarding our commodity price risk under "Commodity Price Risk" in Item 7A, Quantitative and Qualitative Disclosures about Market Risk.

Natural Gas Liquids



Growth Projects - Our Natural Gas Liquids segment invests in projects to
transport, fractionate, store and deliver to market centers NGL supply from
shale and other resource development areas. Our growth strategy is focused
around connecting diversified supply basins from the Rocky Mountain region
through the Mid-Continent region and the Permian Basin with NGL product demand
from the petrochemical industry and NGL export demand in the Gulf Coast. Growing
crude oil, natural gas and NGL production together with higher petrochemical and
export demand have resulted in us making additional capital investments to
expand our infrastructure and alleviate system constraints. See "Growth
Projects" in the "Recent Developments" section for discussion of our announced
capital-growth projects.

We continue to evaluate opportunities to increase the capacity of our gathering,
fractionation, storage and distribution assets or construct new assets to
connect supply growth from the Williston and Powder River Basins, Mid-Continent
region and Permian Basin with end-use markets.

In 2019, we connected seven third-party natural gas processing plants and one
affiliate natural gas processing plant to our NGL system, five in the
Mid-Continent region, one in the Permian Basin and two in the Rocky Mountain
region. In addition, six third-party natural gas processing plants connected to
our system were expanded, two in the Mid-Continent region, two in the Permian
Basin and two in the Rocky Mountain region.

For a discussion of our capital expenditure financing, see "Capital Expenditures" in the "Liquidity and Capital Resources" section.


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Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Liquids segment for the periods indicated:


                                                                                        Variances
                                       Years Ended December 31,             2019 vs. 2018      2018 vs. 2017
Financial Results                 2019           2018           2017               Increase (Decrease)
                                                           (Millions of dollars)
NGL and condensate sales      $  7,910.8     $ 10,319.9     $  8,998.9     $     (2,409.1 )   $      1,321.0
Exchange service revenues
and other                          424.2          415.7        1,430.3                8.5           (1,014.6 )
Transportation and storage
revenues                           197.5          199.0          197.0               (1.5 )              2.0
Cost of sales and fuel
(exclusive of depreciation
and operating costs)            (6,690.9 )     (9,176.8 )     (9,176.5 )         (2,485.9 )              0.3
Operating costs, excluding
noncash compensation
adjustments                       (434.4 )       (378.3 )       (351.3 )             56.1               27.0
Equity in net earnings from
investments                         65.1           67.1           59.9               (2.0 )              7.2
Other                               (6.5 )         (6.0 )         (3.4 )             (0.5 )             (2.6 )
Adjusted EBITDA               $  1,465.8     $  1,440.6     $  1,154.9     $         25.2     $        285.7
Capital expenditures          $  2,796.6     $  1,306.3     $    114.3     $      1,490.3     $      1,192.0

See reconciliation of net income to adjusted EBITDA in the "Adjusted EBITDA" section.



Changes in commodity prices and sales volumes affect both revenues and cost of
sales and fuel, and, therefore, the impact is largely offset between these line
items.

2019 vs. 2018 - Adjusted EBITDA increased $25.2 million, primarily as a result
of the following:
•      an increase of $148.1 million in exchange services due to $150.2 million

in higher volumes primarily in the Rocky Mountain region, the Permian

Basin and the STACK and SCOOP areas, and $91.5 million in higher average

fee rates primarily in the Permian Basin and the Rocky Mountain region,

offset partially by $64.9 million due primarily to higher third-party

transportation and fractionation costs, $25.0 million due primarily to

narrower product price differentials and $5.8 million related to higher

unfractionated NGLs in inventory; offset partially by

• a decrease of $60.2 million in optimization and marketing due primarily to

a decrease of $93.8 million related to wider location price differentials

in the prior year, particularly in the third quarter 2018, and $5.1

million in lower earnings related primarily to product price

differentials, offset partially by higher marketing earnings of

$38.5 million related primarily to the sale of NGL products previously

held in inventory; and

• an increase of $56.1 million in operating costs due primarily to higher

employee-related costs associated with labor and benefits due to the

growth of our operations, and spending on routine maintenance projects.





Capital expenditures increased due primarily to our announced capital-growth
projects.

                                                           Years Ended December 31,
Operating Information                                 2019            2018           2017
Raw feed throughput (MBbl/d) (a)                        1,079          1,010            895
NGLs transported - gathering lines (MBbl/d) (b)           988            912            812
NGLs fractionated (MBbl/d) (c)                            726            715            621
Average Conway-to-Mont Belvieu OPIS price
differential -
ethane in ethane/propane mix ($/gallon)           $      0.07     $     

0.15 $ 0.05

(a) - Represents physical raw feed volumes on which we charge a fee for transportation and/or fractionation services. (b) - Includes volumes for consolidated entities only. (c) - Includes volumes at company-owned and third-party facilities.



2019 vs. 2018 - Raw feed throughput volumes increased primarily in the Rocky
Mountain region, the Permian Basin and the STACK and SCOOP areas as a result of
our completed capital-growth projects, continued drilling and producer
improvements in production due to enhanced completion techniques, offset
partially by natural production declines and lower volumes in the Mid-Continent
region due primarily to lower ethane volumes.


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Natural Gas Pipelines



Growth Projects - Our natural gas pipelines primarily serve end users, such as
natural gas distribution and electric-generation companies, that require natural
gas to operate their businesses regardless of location price differentials. The
development of shale has continued to increase available natural gas supply, and
we expect producers and natural gas processors to require incremental
transportation services in the future as additional supply is developed.

We expanded our natural gas pipeline infrastructure in Oklahoma and the Permian
Basin. The projects included an eastbound expansion of our ONEOK Gas
Transportation system by 150 MMcf/d from the STACK and SCOOP areas to an
interstate pipeline delivery point in eastern Oklahoma, a westbound expansion of
our ONEOK Gas Transportation system by
100 MMcf/d from the STACK area to multiple interstate pipeline delivery points
in western Oklahoma and an expansion of our WesTex Transmission system by
300 MMcf/d from the Permian Basin to interstate pipeline delivery points in the
Texas Panhandle. Additionally, we completed an expansion project on our
Roadrunner joint venture to make the pipeline bidirectional, which resulted in
approximately 1.0 Bcf/d of eastbound transportation capacity from the Delaware
Basin to the Waha area.

See "Capital Expenditures" in "Liquidity and Capital Resources" for additional detail of our projected capital expenditures.

Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Pipelines segment for the periods indicated:


                                                                                        Variances
                                       Years Ended December 31,              2019 vs. 2018     2018 vs. 2017
Financial Results                 2019            2018           2017              Increase (Decrease)
                                                           (Millions of dollars)
Transportation revenues       $     393.7     $    343.0     $    327.9     $        50.7     $        15.1
Storage revenues                     72.6           72.0           66.5               0.6               5.5
Natural gas sales and other
revenues                              5.7           16.7           25.5             (11.0 )            (8.8 )
Cost of sales and fuel
(exclusive of depreciation
and operating costs)                 (4.6 )        (16.0 )        (43.4 )           (11.4 )           (27.4 )
Operating costs, excluding
noncash compensation
adjustments                        (150.8 )       (139.2 )       (123.1 )            11.6              16.1
Equity in net earnings from
investments                          95.7           90.8           87.3               4.9               3.5
Other                                (3.5 )         (1.0 )         (0.9 )            (2.5 )            (0.1 )
Adjusted EBITDA               $     408.8     $    366.3     $    339.8     $        42.5     $        26.5
Capital expenditures          $      99.2     $    119.2     $     95.6     $       (20.0 )   $        23.6

See reconciliation of net income to adjusted EBITDA in the "Adjusted EBITDA" section.



2019 vs. 2018 - Adjusted EBITDA increased $42.5 million primarily as a result of
the following:
•      an increase of $56.5 million from higher transportation services due

primarily to firm transportation capacity contracted due to our completed


       expansion projects; and


•      an increase of $4.9 million from higher equity in net earnings due

primarily to firm transportation capacity contracted on Roadrunner; offset


       partially by


•      an increase of $11.6 million in operating costs due primarily to

employee-related costs associated with labor and benefits and ad valorem


       taxes due to the growth of our operations; and


•      a decrease of $9.1 million from lower net retained fuel and timing of
       equity gas sales.



Capital expenditures decreased due primarily to timing of maintenance projects
and capital-growth projects.

                                                          Years Ended December 31,
Operating Information (a)                             2019           2018         2017
Natural gas transportation capacity contracted
(MDth/d)                                              7,618          6,846  

6,611


Transportation capacity contracted                       98 %           96 

% 94 %

(a) - Includes volumes for consolidated entities only.

2019 vs. 2018 - Natural gas transportation capacity contracted increased due to our completed expansion projects on our ONEOK Gas Transportation and WesTex Transmission systems, which are both substantially contracted.


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Roadrunner, in which we have a 50% ownership interest, has contracted all of its westbound capacity through 2041.

Northern Border Pipeline, in which we have a 50% ownership interest, has contracted substantially all of its long-haul transportation capacity through the fourth quarter 2020.



In June 2019, our subsidiary, Viking Gas Transmission Company, filed a proposed
change in rates pursuant to Section 4 of the Natural Gas Act with the FERC. In
February 2020, all parties agreed to a settlement in principle and plan to
present it to FERC for approval. We do not expect the ultimate outcome to impact
materially our results of operations.

Adjusted EBITDA



Adjusted EBITDA is a non-GAAP measure of our financial performance. Adjusted
EBITDA is defined as net income adjusted for interest expense, depreciation and
amortization, noncash impairment charges, income taxes, allowance for equity
funds used during construction, noncash compensation and other noncash items. We
believe this non-GAAP financial measure is useful to investors because it and
similar measures are used by many companies in our industry as a measurement of
financial performance and is commonly employed by financial analysts and others
to evaluate our financial performance and to compare financial performance among
companies in our industry. Adjusted EBITDA should not be considered an
alternative to net income, earnings per share or any other measure of financial
performance presented in accordance with GAAP. Additionally, this calculation
may not be comparable with similarly titled measures of other companies.

The following table sets forth a reconciliation of net income, the nearest
comparable GAAP financial performance measure, to adjusted EBITDA for the
periods indicated:
                                                               Years Ended December 31,
(Unaudited)                                              2019            2018            2017
Reconciliation of net income to adjusted EBITDA                 (Thousands of dollars)
Net income                                           $ 1,278,577     $ 1,155,032     $   593,519
Add:
Interest expense, net of capitalized interest            491,773         469,620         485,658
Depreciation and amortization                            476,535         428,557         406,335
Income taxes                                             372,414         362,903         447,282
Impairment charges                                             -               -          20,240
Noncash compensation expense                              26,699          37,954          13,421
Equity AFUDC and other noncash items (a)                 (65,811 )        (6,545 )        20,398
Adjusted EBITDA                                      $ 2,580,187     $ 2,447,521     $ 1,986,853
Reconciliation of segment adjusted EBITDA to
adjusted EBITDA
Segment adjusted EBITDA:
Natural Gas Gathering and Processing                 $   702,650     $   631,607     $   518,472
Natural Gas Liquids                                    1,465,765       1,440,605       1,154,939
Natural Gas Pipelines                                    408,816         366,251         339,818
Other (b)                                                  2,956           9,058         (26,376 )
Adjusted EBITDA                                      $ 2,580,187     $ 2,447,521     $ 1,986,853


(a) - Year ended December 31, 2017, includes our April 2017 contribution to the
Foundation of 20,000 shares of Series E Preferred Stock, with an aggregate value
of $20.0 million.
(b) - Year ended December 31, 2017, includes Merger Transaction costs of $30.0
million.

CONTINGENCIES

See Note N of the Notes to Consolidated Financial Statements in this Annual Report for a discussion of regulatory matters.

Other Legal Proceedings - We are a party to various litigation matters and claims that have arisen in the normal course of our operations. While the results of these litigation matters and claims cannot be predicted with certainty, we believe the reasonably possible losses from such matters, individually and in the aggregate, are not material. Additionally, we believe the probable final outcome of such matters will not affect adversely our consolidated results of operations, financial position or cash flows.


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LIQUIDITY AND CAPITAL RESOURCES



General - Our primary sources of cash inflows are operating cash flows, proceeds
from our commercial paper program and our $2.5 Billion Credit Agreement, debt
issuances and the issuance of common stock for our liquidity and capital
resources requirements. In addition, we expect cash outflows related to i)
capital expenditures, ii) interest and repayment of debt maturities and iii)
dividends paid to shareholders. We expect our cash outflows related to capital
expenditures to decrease in 2020 relative to 2019 due to our completed
capital-growth projects. We expect dividends paid to continue to increase due to
earnings growth from capital projects and higher anticipated dividends per
share, subject to declaration by our Board of Directors.

We expect our sources of cash inflows to provide sufficient resources to finance
our operations, capital expenditures and quarterly cash dividends, including
expected future dividend increases. Our $2.5 Billion Credit Agreement, which
expires in June 2024, provides significant liquidity to fund capital
expenditures and repay existing indebtedness. We may access the capital markets
to issue debt or equity securities as we consider prudent to provide additional
liquidity to refinance existing debt, improve credit metrics or to fund capital
expenditures. Although we expect to continue to fund capital projects primarily
with cash from operations, short-term borrowings and long-term debt, we continue
to have access to $550 million available through our "at-the-market" equity
program and the ability to issue equity and other securities under our universal
shelf registration statement.

We manage interest-rate risk through the use of fixed-rate debt, floating-rate
debt and interest-rate swaps. For additional information on our interest-rate
swaps, see Note C of the Notes to Consolidated Financial Statements in this
Annual Report.

Cash Management - We use a centralized cash management program that concentrates
the cash assets of our operating subsidiaries in joint accounts for the purposes
of providing financial flexibility and lowering the cost of borrowing,
transaction costs and bank fees. Our centralized cash management program
provides that funds in excess of the daily needs of our operating subsidiaries
are concentrated, consolidated or otherwise made available for use by other
entities within our consolidated group. Our operating subsidiaries participate
in this program to the extent they are permitted pursuant to FERC regulations or
their operating agreements. Under the cash management program, depending on
whether a participating subsidiary has short-term cash surpluses or cash
requirements, we provide cash to the subsidiary or the subsidiary provides cash
to us.

Short-term Liquidity - Our principal sources of short-term liquidity consist of
cash generated from operating activities, distributions received from our
equity-method investments, proceeds from our commercial paper program and our
$2.5 Billion Credit Agreement. As of December 31, 2019, we were in compliance
with all covenants of the $2.5 Billion Credit Agreement.

At December 31, 2019, we had no borrowings outstanding under our $2.5 Billion
Credit Agreement, $220 million of commercial paper outstanding and $21.0 million
of cash and cash equivalents.

We had working capital (defined as current assets less current liabilities)
deficits of $550.0 million and $709.8 million as of December 31, 2019, and
December 31, 2018, respectively. Although working capital is influenced by
several factors, including, among other things: (i) the timing of (a) debt and
equity issuances, (b) the funding of capital expenditures, (c) scheduled debt
payments, and (d) the collection and payment of accounts receivable and payable;
and (ii) the volume and cost of inventory and commodity imbalances; our working
capital deficit at December 31, 2019, was driven primarily by short-term
borrowings and accrued interest and at December 31, 2018, by current maturities
of long-term debt. We may have working capital deficits in future periods as we
continue to finance our capital-growth projects and repay long-term debt, often
initially with short-term borrowings. Our decision to utilize short-term
borrowings rather than long-term debt was due to more favorable interest rates.
We do not expect this working capital deficit to affect adversely our cash flows
or operations.

For additional information on our $2.5 Billion Credit Agreement and commercial
paper program, see Note F of the Notes to Consolidated Financial Statements in
this Annual Report.

Long-term Financing - In addition to our principal sources of short-term liquidity discussed above, we expect to fund our longer-term financing requirements by issuing long-term notes. Other options to obtain financing include, but are not limited to, issuing common stock, loans from financial institutions, issuance of convertible debt securities or preferred equity securities, asset securitization and the sale and lease-back of facilities.



Debt Issuances - In August 2019, we completed an underwritten public offering of
$2.0 billion senior unsecured notes consisting of $500 million, 2.75% senior
notes due 2024; $750 million, 3.4% senior notes due 2029; and $750 million,
4.45% senior notes due 2049. The net proceeds, after deducting underwriting
discounts, commissions and offering expenses, were

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$1.97 billion. The proceeds were used for general corporate purposes, including repayment of existing indebtedness and funding capital expenditures.



In March 2019, we completed an underwritten public offering of $1.25 billion
senior unsecured notes consisting of $700 million, 4.35% senior notes due 2029
and an additional issuance of $550 million of our existing 5.2% senior notes due
2048. The net proceeds, after deducting underwriting discounts, commissions and
offering expenses, and exclusive of accrued interest, were $1.23 billion. The
proceeds were used for general corporate purposes, including repayment of
existing indebtedness and funding capital expenditures.

In November 2018, we entered into our $1.5 Billion Term Loan Agreement with a
syndicate of banks, which was fully drawn as of June 30, 2019. We repaid
$250 million of our outstanding balance in August 2019 and have $1.25 billion
drawn as of December 31, 2019. Our $1.5 Billion Term Loan Agreement matures in
November 2021 and bears interest at LIBOR plus 112.5 basis points based on our
current credit ratings. The agreement contains substantially the same covenants
as those contained in our $2.5 Billion Credit Agreement. The proceeds were used
for general corporate purposes, including repayment of existing indebtedness and
funding capital expenditures.

Debt Repayments - In September 2019, we redeemed our $300 million, 3.8% senior
notes due March 2020 at a redemption price of $308.0 million, including the
outstanding principal, plus accrued and unpaid interest, with cash on hand from
our public offering of $2.0 billion senior unsecured notes in August 2019.

In August 2019, we repaid $250 million of our $1.5 Billion Term Loan agreement with cash on hand.

In March 2019, we repaid our $500 million, 8.625% senior notes at maturity with a combination of cash on hand and short-term borrowings.

For additional information on our long-term debt, see Note F of the Notes to Consolidated Financial Statements in this Annual Report.



Capital Expenditures - We classify expenditures that are expected to generate
additional revenue, return on investment or significant operating efficiencies
as capital-growth expenditures. Maintenance capital expenditures are those
capital expenditures required to maintain our existing assets and operations and
do not generate additional revenues. Maintenance capital expenditures are made
to replace partially or fully depreciated assets, to maintain the existing
operating capacity of our assets and to extend their useful lives. Our capital
expenditures are financed typically through operating cash flows and short- and
long-term debt.

The following table sets forth our growth and maintenance capital expenditures, excluding AFUDC and capitalized interest, for the periods indicated: Capital Expenditures

                      2019         2018        2017
                                             (Millions of dollars)
Natural Gas Gathering and Processing   $   926.5    $   694.6    $ 284.2
Natural Gas Liquids                      2,796.6      1,306.3      114.3
Natural Gas Pipelines                       99.2        119.2       95.6
Other                                       26.0         21.4       18.3
Total capital expenditures             $ 3,848.3    $ 2,141.5    $ 512.4



Capital expenditures increased in 2019, compared with 2018, due primarily to
capital-growth projects in progress. We expect our 2020 capital expenditures to
decrease relative to 2019 due to our completed capital-growth projects. See
discussion of our announced capital-growth projects in the "Recent Developments"
section.

The following table summarizes our 2020 projected growth and maintenance capital expenditures, excluding AFUDC and capitalized interest:


            2020 Projected Capital Expenditures
                                       (Millions of dollars)
Growth                                     $2,250-$2,730
Maintenance                                  $200-$220

Total projected capital expenditures $2,450-$2,950


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Credit Ratings - Our long-term debt credit ratings as of February 18, 2020, are
shown in the table below:
Rating Agency Long-Term Rating Short-Term Rating Outlook
Moody's             Baa3            Prime-3      Positive
S&P                 BBB               A-2         Stable



Our credit ratings, which are investment grade, may be affected by a material
change in our financial ratios or a material event affecting our business and
industry. The most common criteria for assessment of our credit ratings are the
debt-to-EBITDA ratio, interest coverage, business risk profile and liquidity. If
our credit ratings were downgraded, our cost to borrow funds under our
$2.5 Billion Credit Agreement and our $1.5 Billion Term Loan Agreement would
increase and a potential loss of access to the commercial paper market could
occur. In the event that we are unable to borrow funds under our commercial
paper program and there has not been a material adverse change in our business,
we would continue to have access to our $2.5 Billion Credit Agreement, which
expires in 2024. An adverse credit rating change alone is not a default under
our $2.5 Billion Credit Agreement or our $1.5 Billion Term Loan Agreement. We do
not expect a downgrade in our credit rating to have a material impact on our
results of operations.

In the normal course of business, our counterparties provide us with secured and
unsecured credit. In the event of a downgrade in our credit ratings or a
significant change in our counterparties' evaluation of our creditworthiness, we
could be required to provide additional collateral in the form of cash, letters
of credit or other negotiable instruments as a condition of continuing to
conduct business with such counterparties. We may be required to fund margin
requirements with our counterparties with cash, letters of credit or other
negotiable instruments.

Dividends - Holders of our common stock share equally in any common stock
dividends declared by our Board of Directors, subject to the rights of the
holders of outstanding preferred stock. In 2019, we paid dividends of $3.53 per
share, an increase of 9% compared with the prior year. In February 2020, we paid
a quarterly dividend of $0.935 per share ($3.74 per share on an annualized
basis), an increase of 9% compared with the same quarter in the prior year.

Our Series E Preferred Stock pays quarterly dividends on each share of Series E
Preferred Stock, when, as and if declared by our Board of Directors, at a rate
of 5.5% per year. In 2019, we paid dividends of $1.1 million for the Series E
Preferred Stock. In February 2020, we paid quarterly dividends totaling
$0.3 million for the Series E Preferred Stock.

For the years ended December 31, 2019 and 2018, cash flows from operations
exceeded cash dividends paid by $489.2 million and $851.7 million, respectively.
We expect our cash flows from operations to continue to sufficiently fund our
cash dividends. To the extent operating cash flows are not sufficient to fund
our dividends, we may utilize short- and long-term debt and issuances of equity,
as necessary or appropriate.

CASH FLOW ANALYSIS



We use the indirect method to prepare our Consolidated Statements of Cash Flows.
Under this method, we reconcile net income to cash flows provided by operating
activities by adjusting net income for those items that affect net income but do
not result in actual cash receipts or payments during the period and for
operating cash items that do not impact net income. These reconciling items
include depreciation and amortization, impairment charges, allowance for equity
funds used during construction, gain or loss on sale of assets, deferred income
taxes, net undistributed earnings from equity-method investments, share-based
compensation expense, other amounts and changes in our assets and liabilities
not classified as investing or financing activities.


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The following table sets forth the changes in cash flows by operating, investing and financing activities for the periods indicated:


                                                          Years Ended December 31,
                                                      2019          2018          2017
                                                            (Millions of dollars)
Total cash provided by (used in):
Operating activities                               $ 1,946.8     $ 2,186.7     $ 1,315.4
Investing activities                                (3,768.8 )    (2,114.9 )      (567.6 )
Financing activities                                 1,831.0         (97.0 )      (959.5 )
Change in cash and cash equivalents                      9.0         (25.2 )      (211.7 )
Cash and cash equivalents at beginning of period        12.0          37.2  

248.9

Cash and cash equivalents at end of period $ 21.0 $ 12.0

$ 37.2





Operating Cash Flows - Operating cash flows are affected by earnings from our
business activities and changes in our operating assets and liabilities. Changes
in commodity prices and demand for our services or products, whether because of
general economic conditions, changes in supply, changes in demand for the end
products that are made with our products or increased competition from other
service providers, could affect our earnings and operating cash flows. Our
operating cash flows can also be impacted by changes in our natural gas and NGL
inventory balances, which are driven primarily by commodity prices, supply,
demand and the operation of our assets.

2019 vs. 2018 - Cash flows from operating activities, before changes in
operating assets and liabilities, increased $130.4 million due primarily to
higher earnings resulting from volume growth in the Rocky Mountain region, STACK
and SCOOP areas and the Permian Basin in our Natural Gas Liquids segment and the
Williston Basin and STACK and SCOOP areas in our Natural Gas Gathering and
Processing segment, as discussed in "Financial Results and Operating
Information."

The changes in operating assets and liabilities decreased operating cash flows
$163.9 million for 2019, compared with an increase of $206.4 million for 2018.
This change is due primarily to the change in the fair value of our
risk-management assets and liabilities; the change in accounts receivable,
accounts payable, and other accruals and deferrals resulting from the timing of
receipt of cash from customers and payments to vendors, suppliers and other
third parties; and the change in natural gas and NGLs in storage, which vary
both from period to period and with the changes in commodity prices.

Investing Cash Flows

2019 vs. 2018 - Cash used in investing activities increased $1.7 billion due primarily to increased capital expenditures related to our capital-growth projects.

Financing Cash Flows

2019 vs. 2018 - Cash from financing activities increased $1.9 billion due primarily to issuances of $3.25 billion in senior unsecured notes, the $700 million net draw on our $1.5 Billion Term Loan Agreement and an increase in proceeds from short-term borrowings, offset partially by a decrease due to issuances of common stock in 2018.



Cash Flow Analysis for the Year Ended December 31, 2018 vs. 2017 - The cash flow
analysis for the year ended December 31, 2018, compared with the year ended
December 31, 2017, is included in Part II, Item 7, Management's Discussion and
Analysis of Financial Condition and Results of Operations of our 2018 Annual
Report on Form 10-K, which is available via the SEC's website at www.sec.gov and
our website at www.oneok.com.

IMPACT OF NEW ACCOUNTING STANDARDS

Information about the impact of new accounting standards is included in Note A of the Notes to Consolidated Financial Statements in this Annual Report.

ESTIMATES AND CRITICAL ACCOUNTING POLICIES



The preparation of our Consolidated Financial Statements and related disclosures
in accordance with GAAP requires us to make estimates and assumptions with
respect to values or conditions that cannot be known with certainty that affect
the reported amounts of assets and liabilities, and the disclosure of contingent
assets and liabilities at the date of the Consolidated

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Financial Statements. These estimates and assumptions also affect the reported
amounts of revenue and expenses during the reporting period. Although we believe
these estimates and assumptions are reasonable, actual results could differ from
our estimates.

The following is a summary of our most critical accounting policies, which are
defined as those estimates and policies most important to the portrayal of our
financial condition and results of operations and requiring management's most
difficult, subjective or complex judgment, particularly because of the need to
make estimates concerning the impact of inherently uncertain matters. We have
discussed the development and selection of our estimates and critical accounting
policies with the Audit Committee of our Board of Directors.

Derivatives and Risk-management Activities - We utilize derivatives to reduce
our market-risk exposure to commodity price and interest-rate fluctuations and
to achieve more predictable cash flows. Our commodity price risk includes basis
risk, which is the difference in price between various locations where
commodities are purchased and sold. We record all derivative instruments at fair
value, except for normal purchases and normal sales transactions that are
expected to result in physical delivery. Many of the contracts in our derivative
portfolio are executed in liquid markets where price transparency exists.

Our fair value measurements classified as Level 3 are composed predominantly of
exchange-cleared and over-the-counter derivatives to hedge NGL price risk and
natural gas basis risk between various transaction locations and the NYMEX Henry
Hub. These measurements are based on inputs that may include one or more
unobservable inputs, including internally developed commodity price curves, that
incorporate market data from broker quotes and third-party pricing services. Our
commodity derivatives are generally valued using forward quotes provided by
third-party pricing services that are validated with other market data. We
believe any measurement uncertainty at December 31, 2019, is immaterial as our
Level 3 fair value measurements are based on unadjusted pricing information from
broker quotes and third-party pricing services.

The accounting for changes in the fair value of a derivative instrument depends
on whether it qualifies and has been designated as part of a hedging
relationship. When possible, we implement effective hedging strategies using
derivative financial instruments that qualify as hedges for accounting purposes.
We have not used derivative instruments for trading purposes. For a derivative
designated as a cash flow hedge, the gain or loss from a change in fair value of
the derivative instrument is deferred in accumulated other comprehensive income
(loss) until the forecasted transaction affects earnings, at which time the fair
value of the derivative instrument is reclassified into earnings.

We assess the effectiveness of hedging relationships at the inception of the
hedge by performing an effectiveness test to determine whether they are highly
effective. We subsequently assess qualitative factors. We do not believe that
changes in our fair value estimates of our derivative instruments have a
material impact on our results of operations, as the majority of our derivatives
are accounted for as effective cash flow hedges. However, if a derivative
instrument is ineligible for cash flow hedge accounting or if we fail to
appropriately designate it as a cash flow hedge, changes in fair value of the
derivative instrument would be recorded currently in earnings. Additionally, if
a cash flow hedge ceases to qualify for hedge accounting treatment because it is
no longer probable that the forecasted transaction will occur, the change in
fair value of the derivative instrument would be recognized in earnings. For
more information on commodity price sensitivity and a discussion of the market
risk of pricing changes, see Item 7A, Quantitative and Qualitative Disclosures
about Market Risk.

See Notes A, B and C of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of fair value measurements and derivatives and risk-management activities.



Impairment of Goodwill and Long-Lived Assets, Including Intangible Assets - We
assess our goodwill for impairment at least annually on July 1, unless events or
changes in circumstances indicate an impairment may have occurred before that
time. As part of our goodwill impairment test, we may first assess qualitative
factors (including macroeconomic conditions, industry and market considerations,
cost factors and overall financial performance) to determine whether it is more
likely than not that the fair value of each of our reporting units is less than
its carrying amount. If further testing is necessary or a quantitative test is
elected, we perform a two-step impairment test for goodwill.

Update - Upon adoption of ASU 2017-04 in January 2020, the requirement to
calculate the implied fair value of goodwill under the two-step impairment test
was eliminated. See Note A of the Notes to Consolidated Financial Statements in
this Annual Report for more information.

Our qualitative goodwill impairment analysis performed as of July 1, 2019, did
not result in an impairment charge nor did our analysis reflect any reporting
units at risk, and subsequent to that date, no event has occurred indicating
that the implied fair value of each of our reporting units is less than the
carrying value of its net assets.


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The following table sets forth our goodwill, by segment, for the periods indicated:


                                      December 31,      December 31,
                                          2019              2018
                                          (Thousands of dollars)
Natural Gas Gathering and Processing $      153,404    $      153,404
Natural Gas Liquids                         371,217           371,217
Natural Gas Pipelines                       156,375           156,479
Total goodwill                       $      680,996    $      681,100



We assess our long-lived assets, including intangible assets with finite useful
lives, for impairment whenever events or changes in circumstances indicate that
an asset's carrying amount may not be recoverable. An impairment is indicated if
the carrying amount of a long-lived asset exceeds the sum of the undiscounted
future cash flows expected to result from the use and eventual disposition of
the asset. If an impairment is indicated, we record an impairment loss equal to
the difference between the carrying value and the fair value of the long-lived
asset.

For the investments we account for under the equity method, the impairment test
considers whether the fair value of the equity investment as a whole, not the
underlying net assets, has declined and whether that decline is other than
temporary. Therefore, we periodically evaluate the amount at which we carry our
equity-method investments to determine whether current events or circumstances
warrant adjustments to our carrying value.

Impairment Charges - We recorded $20.2 million of noncash impairment charges in
2017 related to certain nonstrategic long-lived assets and equity investments in
North Dakota and Oklahoma.

Our impairment tests require the use of assumptions and estimates such as
industry economic factors and the profitability of future business strategies.
If actual results are not consistent with our assumptions and estimates or our
assumptions and estimates change due to new information, we may be exposed to
future impairment charges.

See Notes A, D, E and M of the Notes to Consolidated Financial Statements in
this Annual Report for additional discussion of goodwill, long-lived assets and
investments in unconsolidated affiliates.

Depreciation Methods and Estimated Useful Lives of Property, Plant and Equipment
- Our property, plant and equipment are depreciated using the straight-line
method that incorporates management assumptions regarding useful economic lives
and residual values. As we continue to increase capital spending and place
additional assets in service, our estimates related to depreciation expense have
become more significant and changes in estimated useful lives of our assets
could have a material effect on our results of operations. At the time we place
our assets in service, we believe such assumptions are reasonable; however,
circumstances may develop that would cause us to change these assumptions, which
would change our depreciation expense prospectively. Examples of such
circumstances include changes in (i) competition, (ii) laws and regulations that
limit the estimated economic life of an asset, (iii) technology that render an
asset obsolete, (iv) expected salvage values and (v) forecasts of the remaining
economic life for the resource basins where our assets are located, if any.

See Note D of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of property, plant and equipment.



Contingencies - Our accounting for contingencies covers a variety of business
activities, including contingencies for legal and environmental exposures. We
accrue these contingencies when our assessments indicate that it is probable
that a liability has been incurred or an asset will not be recovered, and an
amount can be reasonably estimated. We expense legal fees as incurred and base
our legal liability estimates on currently available facts and our assessments
of the ultimate outcome or resolution. Accruals for estimated losses from
environmental remediation obligations generally are recognized no later than the
completion of a remediation feasibility study. Recoveries of environmental
remediation costs from other parties are recorded as assets when their receipt
is deemed probable. Our expenditures for environmental evaluation, mitigation,
remediation and compliance to date have not been significant in relation to our
financial position or results of operations, and our expenditures related to
environmental matters had no material effect on earnings or cash flows during
2019, 2018 or 2017. Actual results may differ from our estimates resulting in an
impact, positive or negative, on our results of operations.

See Note N of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of contingencies.


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CONTRACTUAL OBLIGATIONS AND COMMERCIAL COMMITMENTS



The following table sets forth our contractual obligations related to debt,
leases and other long-term obligations as of December 31, 2019. For additional
discussion of the debt and lease agreements, see Notes F and O of the Notes to
Consolidated Financial Statements in this Annual Report.
                                                                 Payments Due by Period
Contractual Obligations       Total          2020          2021          2022          2023          2024        Thereafter
                                                                 (Millions of dollars)
Senior notes               $ 11,322.4     $       -     $       -     $ 1,447.4     $   925.0     $   500.0     $   8,450.0
Commercial paper
borrowings                      220.0         220.0             -             -             -             -               -
$1.5 Billion Term Loan
Agreement                     1,250.0             -       1,250.0             -             -             -               -
Guardian Pipeline senior
notes                            21.3           7.7           7.7           5.9             -             -               -
Interest payments on
debt                          8,754.2         610.2         601.2         530.8         487.2         442.5         6,082.3
Operating leases                 19.6           2.5           2.1           2.0           1.9           1.9             9.2
Finance lease                    39.6           4.5           4.5           4.5           4.5           4.5            17.1
Firm transportation and
storage contracts               398.4          61.6          48.1          40.1          36.4          34.3           177.9
Financial and physical
derivatives                     188.1         168.0          20.1             -             -             -               -
Employee benefit plans           81.8          14.1          14.6          13.1          14.5          13.8            11.7
Purchase commitments and
other                           312.7          54.1          53.9          53.2          50.8          37.8            62.9
Total                      $ 22,608.1     $ 1,142.7     $ 2,002.2     $ 2,097.0     $ 1,520.3     $ 1,034.8     $  14,811.1

Senior notes, $1.5 Billion Term Loan Agreement and commercial paper borrowings - Represents the amount of principal due in each period.

Interest payments on debt - Interest payments are calculated by multiplying long-term debt principal amount by the respective coupon rates.



Operating leases - Our operating leases primarily include leases for certain
buildings, warehouses, office space, pipeline capacity, land and equipment,
including pipeline equipment, rail cars and information technology equipment. As
of December 31, 2019, we entered into an additional operating lease that had not
yet commenced with total lease payments of $87.8 million over a lease term of
10 years, which is excluded from our table above.

Finance lease - We lease certain compression facilities under a finance lease that has a fixed-price purchase option in 2028.

Firm transportation and storage contracts - Our Natural Gas Gathering and Processing and Natural Gas Liquids segments are party to fixed-price contracts for firm transportation and storage capacity.



Financial and physical derivatives - These are obligations arising from our
fixed- and variable-price purchase commitments for physical and financial
commodity derivatives. Estimated future variable-price purchase commitments are
based on market information at December 31, 2019. Actual future variable-price
purchase obligations may vary depending on market prices at the time of
delivery. Sales of the related physical volumes and net positive settlements of
financial derivatives are not reflected in the table above.

Employee benefit plans - We contributed $12.1 million to our defined benefit
pension plan in January 2020 and expect to make $2.0 million in contributions to
our other postretirement plans in 2020. See Note K of the Notes to Consolidated
Financial Statements in this Annual Report for discussion of our employee
benefit plans.

Purchase commitments and other - Purchase commitments include commitments
related to our growth capital expenditures and other contractual commitments.
Purchase commitments exclude commodity purchase contracts, which are included in
the "Financial and physical derivatives" amounts.

FORWARD-LOOKING STATEMENTS



Some of the statements contained and incorporated in this Annual Report are
forward-looking statements as defined under federal securities laws. The
forward-looking statements relate to our anticipated financial performance
(including projected operating income, net income, capital expenditures, cash
flows and projected levels of dividends), liquidity, management's plans and
objectives for our future capital-growth projects and other future operations
(including plans to construct additional

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natural gas and NGL pipelines, processing and fractionation facilities and
related cost estimates), our business prospects, the outcome of regulatory and
legal proceedings, market conditions and other matters. We make these
forward-looking statements in reliance on the safe harbor protections provided
under federal securities legislation and other applicable laws. 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 Annual Report
identified by words such as "anticipate," "believe," "continue," "could,"
"estimate," "expect," "forecast," "goal," "guidance," "intend," "may," "might,"
"outlook," "plan," "potential," "project," "scheduled," "should," "will,"
'would," and other words and terms of similar meaning.

One 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:
•      the impact on drilling and production by factors beyond our control,

including the demand for natural gas and crude oil; producers' desire and

ability to drill and obtain necessary permits; regulatory compliance;


       reserve performance; and capacity constraints on the pipelines that
       transport crude oil, natural gas and NGLs from producing areas and our
       facilities;

• risks associated with adequate supply to our gathering, processing,


       fractionation and pipeline facilities, including production declines that
       outpace new drilling or extended periods of ethane rejection;


•      competition from other United States and foreign energy suppliers and
       transporters, as well as alternative forms of energy, including, but not
       limited to, solar power, wind power, geothermal energy and biofuels such
       as ethanol and biodiesel;

• demand for our services and products in the proximity of our facilities;

• the ability to market pipeline capacity on favorable terms, including the

effects of:

- future demand for and prices of natural gas, NGLs and crude oil;

- competitive conditions in the overall energy market;

- availability of supplies of United States natural gas and crude oil; and

- availability of additional storage capacity;

• the effects of weather and other natural phenomena, including climate


       change, on our operations, demand for our services and energy prices;


•      acts of nature, sabotage, terrorism or other similar acts that cause

       damage to our facilities or our suppliers', customers' or shippers'
       facilities;


•      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 throughout the world;

• economic climate and growth in the geographic areas in which we do business;

• the timing and extent of changes in energy commodity prices;

• the timely receipt of approval by applicable governmental entities for

construction and operation of our pipeline and other projects and required

regulatory clearances;

• our ability to acquire all necessary permits, consents or other approvals

in a timely manner, to promptly obtain all necessary materials and

supplies required for construction, and to construct gathering,

processing, storage, fractionation and transportation facilities without

labor or contractor problems;

• the profitability of assets or businesses acquired or constructed by us;

• the risk of a slowdown in growth or decline in the United States or

international economies, including liquidity risks in United States or

foreign credit markets;

• risks of marketing, trading and hedging activities, including the risks of

changes in energy prices or the financial condition of our counterparties;




•      the uncertainty of estimates, including accruals and costs of
       environmental remediation;

• changes in demand for the use of natural gas, NGLs and crude oil because


       of market conditions caused by concerns about climate change;


•      the impact of uncontracted capacity in our assets being greater or less
       than expected;


•      the composition and quality of the natural gas and NGLs we gather and
       process in our plants and transport on our pipelines;


•      the efficiency of our plants in processing natural gas and extracting and
       fractionating NGLs;



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• our ability to control construction costs and completion schedules of our

pipelines and other projects;

• the effects of changes in governmental policies and regulatory actions,

including changes with respect to income and other taxes, pipeline safety,

environmental compliance, climate change initiatives and authorized rates

of recovery of natural gas and natural gas transportation costs;

• 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;

• the results of administrative proceedings and litigation, regulatory

actions, executive orders, rule changes and receipt of expected clearances


       involving any local, state or federal regulatory body, including the FERC,
       the National Transportation Safety Board, the PHMSA, the EPA and the CFTC;

• difficulties or delays experienced by trucks, railroads or pipelines in

delivering products to or from our terminals or pipelines;

• the capital-intensive nature of our businesses;

• the mechanical integrity of facilities operated;

• 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 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 unforeseen changes in interest rates, debt and equity

markets, inflation rates, economic recession and other external factors


       over which we have no control, including the effect on pension and
       postretirement expense and funding resulting from changes in equity and
       bond market returns;

• our indebtedness and guarantee obligations could make us vulnerable to

general adverse economic and industry conditions, limit our ability to

borrow additional funds and/or place us at competitive disadvantages

compared with our competitors that have less debt or have other adverse

consequences;

• actions by rating agencies concerning our credit;

• our ability to access capital at competitive rates or on terms acceptable

to us;

• the impact and outcome of pending and future litigation;




•      performance of contractual obligations by our customers, service
       providers, contractors and shippers;

• our ability to control operating costs and make cost-saving changes;




•      the impact of recently issued and future accounting updates and other
       changes in accounting policies;


•      the risk of increased costs for insurance premiums, security or other
       items as a consequence of terrorist attacks;

• the risk inherent in the use of information systems in our respective


       businesses and those of our counterparties and service providers,
       implementation of new software and hardware, and the impact on the
       timeliness of information for financial reporting;

• the impact of potential impairment charges; 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 affect adversely our future
results. These and other risks are described in greater detail in Part I, Item
1A, Risk Factors, in this Annual Report and in our other filings that we make
with the SEC, which are available via the SEC's website at www.sec.gov and our
website at www.oneok.com. All forward-looking statements attributable to us or
persons acting on our behalf are expressly qualified in their entirety by these
factors. Any such forward-looking statement speaks only as of the date on which
such statement is made, and 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.

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