Calculation of Net Profits Income



The following is a summary of the calculation of net profits income received by
the Trust:

                                              Year Ended                       Three Months Ended
                                            December 31 (a)                      December 31(a)
                                         2022             2021               2022               2021
Sales Volumes
Oil (Bbls) (b)
Underlying properties                     237,447           92,602              37,737            (38,259 )
Average per day                               651              254                 410               (416 )
Net profits interests                      58,036           60,669               9,297             14,978
Gas (Mcf) (b)
Underlying properties                   1,382,565          939,350             286,170            (36,372 )
Average per day                             3,788            2,574               3,111               (395 )
Net profits interests                   1,169,758          827,456             245,370             (7,443 )
Average Sales Price
Oil (per Bbl)                        $      77.21     $      64.14      $        88.30      $       34.23
Gas (per Mcf)                        $       8.08     $       5.93      $        10.52      $      (27.98 )
Revenues
Oil sales                            $ 18,332,657     $  5,939,937      $    3,332,223      $  (1,309,441 )
Gas sales                              11,177,646        5,573,982           3,011,123          1,017,517

Total Revenues                         29,510,303       11,513,919           6,343,346           (291,924 )

Costs

Taxes, transportation and other 2,909,480 1,522,567

    651,341           (102,481 )
Production expense (c)                  5,821,761        4,555,193           1,628,629          1,149,654
Development costs                       2,656,813          152,884           1,298,868            102,506
Excess costs (d)                        3,896,111       (3,289,369 )          (520,986 )       (3,580,678 )

Total Costs                            15,284,165        2,941,275           3,057,852         (2,430,999 )

Other Proceeds                                 -           (33,956 )                -                  -

Net Proceeds                         $ 14,226,138     $  8,538,688      $    3,285,494      $   2,139,075

Net Profits Income                   $ 12,493,727     $  7,438,451      $    2,956,945      $   1,835,853

(a) Because of the interval between time of production and receipt of net profits

income by the Trust, oil and gas sales for the year ended December 31

generally relate to oil production from November through October and gas

production from October through September, while oil and gas sales for the

quarter ended December 31 generally relate to oil production from August

through October and gas production from July through September.

(b) Oil and gas sales volumes are allocated to the net profits interests by

dividing Trust net cash inflows by average sales prices. As oil and gas

prices change, the Trust's allocated production volumes are impacted as the

quantity of production necessary to cover expenses changes inversely with

price. As such, the underlying property production volume changes may not

correlate with the Trust's allocated production volumes in any given period.

Therefore, comparative discussion of oil and gas sales volumes is based on

the underlying properties.

(c) Production expense includes an overhead charge which is deducted and retained

by the operator. XTO Energy deducts an overhead charge as reimbursement for

costs associated with monitoring these interests. See Note 5 to Financial

Statements under Item 8. Financial Statements and Supplementary Data.

(d) See Note 7 to Financial Statements under Item 8. Financial Statements and


    Supplementary Data.



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Results of Operations

Years Ended December 31, 2022 and 2021



Net profits income for 2022 was $12,493,727 as compared with $7,438,451 for
2021. The 68 percent increase in net profits income from 2021 to 2022 was
primarily the result of increased oil and gas production ($11.5 million) and
higher oil and gas prices ($3.1 million), partially offset by net excess costs
activity ($5.4 million), increased development costs ($1.9 million), increased
taxes, transportation and other costs ($1.2 million), and increased production
expenses ($1.0 million). During 2022 and 2021, 62 percent and 53 percent,
respectively, of net profits income was derived from gas sales.

Trust administration expense was $765,955 in 2022 as compared to $765,317 in
2021. Cash reserve activity was $0 in 2022 and 2021. As of December 31, 2022,
the reserve is funded at $1,000,000. Interest income was $15,464 in 2022 and
$168 in 2021. Other changes in interest income are attributable to fluctuations
in net profits income and interest rates.

Net profits income is recorded when received by the Trust, which is the month
following receipt by XTO Energy, and generally two months after oil production
and three months after gas production. Net profits income is generally affected
by three major factors:

  1. oil and gas sales volumes;


  2. oil and gas sales prices; and


  3. costs deducted in the calculation of net profits income.

Volumes



Oil.  Underlying oil sales volumes increased 156 percent from 2021 to 2022
primarily because of receipt of oil sales volumes by the operator of the North
Cowden Unit that had been reversed by the oil purchaser in fourth quarter 2021,
partially offset by natural production decline.

Gas. Underlying gas sales volumes increased 47 percent from 2021 to 2022 primarily because of timing of cash receipts, partially offset by natural production decline.

The estimated rate of natural production decline on the underlying oil and gas properties is approximately 6 to 8 percent a year.

Prices



Oil.   The average oil price for 2022 was $77.21 per Bbl, up 20 percent from the
2021 average oil price of $64.14 per Bbl. Oil prices are expected to remain
volatile. The average NYMEX price for November 2022 through January 2023 was
$79.78 per Bbl. At March 15, 2023, the average NYMEX oil price for the following
12 months was $67.70 per Bbl.

Gas.   The 2022 average gas price was $8.08 per Mcf, up 36 percent from the 2021
average gas price of $5.93 per Mcf. Natural gas prices are affected by natural
gas liquids prices, the level of North American production, weather, crude oil
prices, the U.S. economy, storage levels and export levels of liquefied natural
gas. Natural gas prices are expected to remain volatile. The average NYMEX price
for fourth quarter 2022 was $8.20 per MMBtu. At March 15, 2023, the average
NYMEX gas price for the following 12 months was $3.22 per MMBtu.

Costs



Because properties underlying the 90% net profits interests are primarily
royalty and overriding royalty interests, the calculation of net profits income
from these interests includes deductions for production and property taxes,
legal costs, and marketing and transportation charges. In addition to these
costs, the calculation of net profits income from the 75% net profits interests
includes deductions for production expense and development costs since the
related underlying properties are working interests. Net profits income is
calculated monthly for each of the five conveyances under which the

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net profits interests were conveyed to the Trust. If monthly costs exceed
revenues for any conveyance, such excess costs must be recovered, with accrued
interest, from future net proceeds of that conveyance and cannot reduce net
profits income from other conveyances. Costs have never exceeded revenues from
the 90% net profits interests, nor are they expected to in the future. For
further information on excess costs, see Note 7 to Financial Statements under
Item 8. Financial Statements and Supplementary Data.

Total costs deducted in the calculation of net profits income were $15.3 million
in 2022 and $2.9 million in 2021. This increase of $12.4 million from 2021 to
2022 is attributable to net excess costs ($7.2 million), increased development
costs ($2.5 million), taxes, transportation and other costs ($1.4 million), and
production expense ($1.3 million).

Unit operators of the properties underlying the 75% net profits interests have
reported underlying budgeted development costs of approximately $1.4 million for
2023 and $1.6 million for 2024 ($1.1 million and $1.2 million, respectively, net
to the Trust), as compared to underlying budgeted development costs of
$1.4 million ($1.0 million net to the Trust) and actual development costs of
$2.7 million ($2.0 million net to the Trust) for 2022. Actual development costs
often differ from amounts budgeted because of changes in product prices and
other factors that may affect the timing or selection of projects. Changes in
oil or natural gas prices could impact future development plans on the
underlying properties.

Other Proceeds

The calculation of net profits income for the year ended December 31, 2021 included an expense adjustment from XTO Energy of $33,956 ($30,560 net to the Trust).



Fourth Quarter 2022 and 2021

During the quarter ended December 31, 2022, the Trust received net profits
income totaling $2,956,945, compared with fourth quarter 2021 net profits income
of $1,835,853. This 61 percent increase in net profits income is primarily the
result of increased oil and gas production and prices ($5.3 million), partially
offset by net excess costs activity ($2.3 million), increased development costs
($0.9 million), increased taxes, transportation and other costs ($0.6 million),
and increased production expenses ($0.3 million).

Administration expense was $203,624 and Trust interest income was $9,727, resulting in fourth quarter 2022 distributable income of $2,763,048, or $0.460508 per unit. Distributable income for fourth quarter 2021 was $1,662,792, or $0.277132 per unit.

Distributions to unitholders for the quarter ended December 31, 2022 were:



                    Record Date        Payment Date       Per Unit
                 October 31, 2022    November 15, 2022   $ 0.149149
                 November 30, 2022   December 14, 2022     0.161024
                 December 30, 2022   January 17, 2023      0.150335

                                                         $0.460508



Volumes

Fourth quarter 2022 underlying oil sales volumes were up 75,996 Bbls from fourth
quarter 2021 primarily because of absence of the reversal of oil sales volumes
by the oil purchaser of the North Cowden Unit in fourth quarter 2021, partially
offset by natural production decline. These oil sales were subsequently paid by
the operator in first quarter 2022. Underlying gas sales volumes for fourth
quarter 2022 were up 322,542 Mcf from fourth quarter 2021 because of timing of
cash receipts and adjustments, partially offset by natural production decline.

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Prices



The average fourth quarter 2022 oil price was $88.30 per Bbl, up 158 percent
from the fourth quarter 2021 average price of $34.23 per Bbl primarily because
of the absence of the reversal of oil sales volumes by the oil purchaser of the
North Cowden Unit in fourth quarter 2021. The average fourth quarter 2022 gas
price was $10.52 per Mcf, up $38.50 from the fourth quarter 2021 average price
of ($27.98) per Mcf primarily because of adjustments recorded in fourth quarter
2021. For further information about oil and gas prices, see "Years Ended
December 31, 2022 and 2021 - Prices" above.

Costs



Costs deducted in the calculation of fourth quarter 2022 net profits income
increased $5.5 million from fourth quarter 2021. This increase was primarily
attributable to net excess costs ($3.1 million), increased development costs
($1.2 million), taxes, transportation and other costs ($0.7 million), and
production expenses ($0.5 million). For further information about development
and excess costs, see "Years Ended December 31, 2022 and 2021 - Costs" above.

Liquidity and Capital Resources



The Trust's only cash requirement is any declared monthly distribution of its
income to unitholders, which is funded by the monthly receipt of net profits
income after payment of Trust administration expenses. The Trust is not liable
for any production costs or liabilities attributable to the underlying
properties. If at any time the Trust receives net profits income in excess of
the amount due, the Trust is not obligated to return such overpayment, but
future net profits income payable to the Trust will be reduced by the
overpayment, plus interest at the prime rate. The Trustee may establish cash
reserves for certain contingencies. The Trust may borrow funds required to pay
Trust liabilities if fully repaid prior to further distributions to unitholders.

The Trust does not have any transactions, arrangements or other relationships
with unconsolidated entities or persons that could materially affect the Trust's
liquidity or the availability of capital resources.

Greenhouse Gas Emissions and Climate Change Regulations



There is an increased focus by local, national and international regulatory
bodies on greenhouse gas (GHG) emissions and climate change. A number of nations
and U.S. states have adopted or are considering some form of climate change
legislation and regulations, including carbon taxes, cap-and-trade policies and
bans on drilling in certain areas or in certain ways. The climate accord reached
at the Conference of the Parties (COP21) in Paris set many new goals, and while
many related policies are still emerging, XTO Energy has informed the Trustee
that it continues to anticipate that such policies will increase the cost of
carbon dioxide emissions over time. As these regulations are under development,
XTO Energy is unable to predict the total impact of the potential regulations
upon the operators of the underlying properties, and it is possible that the
operators of the underlying properties could face increases in operating costs
or a ban of certain types of activities in order to comply with climate change
or GHG emissions legislation, which costs could reduce or eliminate net proceeds
payable to the Trust and Trust distributions.

Off-Balance Sheet Arrangements



The Trust has no off-balance sheet financing arrangements. The Trust has not
guaranteed the debt of any other party, nor does the Trust have any other
arrangements or relationships with other entities that could potentially result
in unconsolidated debt, losses or contingent obligations.

Related Party Transactions

The underlying properties from which the net profits interests were carved are currently owned by XTO Energy or other affiliated companies of ExxonMobil.



Approximately 28 of the underlying royalty interests burden working interests in
properties operated by XTO Energy. XTO Energy operates the Hewitt Unit which is
one of the properties underlying the Oklahoma 75% net profits interests.

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Other than these properties, XTO Energy and ExxonMobil do not operate or control any of the underlying properties or related working interests.



In computing net proceeds for the 75% net profits interests (Note 3), XTO Energy
deducts an overhead charge as reimbursement for costs associated with monitoring
these interests. This overhead charge at December 31, 2022 was approximately
$44,445 per month, or $533,340 annually (net to the Trust of $33,334 per month,
or $400,008 annually), and is subject to annual adjustment based on an oil and
gas industry index.

XTO Energy deducts a monthly overhead charge for reimbursement of administrative
expenses as operator of the Hewitt Unit, which is one of the properties
underlying the Oklahoma 75% net profits interests. As of December 31, 2022, this
charge was approximately $30,333 per month, or $363,996 annually (net to the
Trust of $22,750 per month, or $273,000 annually), and is subject to annual
adjustment based on an oil and gas industry index.

The calculation of net profits income for the year ended December 31, 2021 included an expense adjustment from XTO Energy of $33,956 ($30,560 net to the Trust).

On June 25, 2010, XTO Energy became a wholly-owned subsidiary of Exxon Mobil Corporation.



Critical Accounting Policies

The financial statements of the Trust are significantly affected by its basis of accounting and estimates related to its oil and gas properties and proved reserves, as summarized below.

Basis of Accounting



The Trust's financial statements are prepared on a modified cash basis, which is
a comprehensive basis of accounting other than U.S. GAAP. This method of
accounting is consistent with reporting of taxable income to Trust unitholders.
The most significant differences between the Trust's financial statements and
those prepared in accordance with U.S. GAAP are:

        1.  net profits income is recognized in the month received rather than
            accrued in the month of production;


  2. expenses are recognized when paid rather than when incurred; and


        3.  cash reserves may be established by the Trustee for certain
            contingencies that would not be recorded under U.S. GAAP.


This comprehensive basis of accounting other than U.S. GAAP corresponds to the
accounting permitted for royalty trusts by the U.S. Securities and Exchange
Commission, as specified by Staff Accounting Bulletin Topic 12:E, Financial
Statements of Royalty Trusts. For further information regarding the Trust's
basis of accounting, see Note 2 to Financial Statements under Item 8. Financial
Statements and Supplementary Data.

All amounts included in the Trust's financial statements are based on cash
amounts received or disbursed, or on the carrying value of the net profits
interests, which was derived from the historical cost of the interests at the
date of their transfer from XTO Energy, less accumulated amortization to date.
Accordingly, there are no fair value estimates included in the financial
statements based on either exchange or non-exchange trade values.

Impairment of Net Profits Interests



The Trustee reviews the Trust's net profits interests ("NPI") in oil and gas
properties for impairment whenever events or circumstances indicate that the
carrying value of the NPI may not be recoverable. In general, the Trustee does
not view temporarily low prices as an indication of impairment. The markets for
crude oil and natural gas have a history of significant price volatility and
though prices will occasionally drop significantly, industry prices over the
long term will continue to be driven by market supply and demand. If events and
circumstances indicate the carrying value may not be

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recoverable, the Trustee would use the estimated undiscounted future net cash
flows from the NPI to evaluate the recoverability of the Trust assets. If the
undiscounted future net cash flows from the NPI are less than the NPI carrying
value, the Trust would recognize an impairment loss for the difference between
the NPI carrying value and the estimated fair value of the NPI. The
determination as to whether the NPI is impaired requires a significant amount of
judgment by the Trustee and is based on the best information available to the
Trustee at the time of the evaluation, including commodity pricing and other
information provided by XTO Energy such as estimates of future production and
development and operating expenses.

During 2022, including fourth quarter, no trigger event occurred that would
indicate a need for an impairment assessment. Accordingly, there was no
impairment of the NPI as of December 31, 2022. Any impairment recorded for book
purposes will not result in a loss for tax purposes for the unitholders until
the loss is recognized.

Net profits interests in oil and gas properties



The initial carrying value of the net profits interests of $61,100,449 was XTO
Energy's historical net book value of the interests on February 12, 1991, the
date of the transfer to the Trust. Amortization of the net profits interests is
calculated on a unit-of-production basis using proved reserves and is charged
directly to trust corpus. Accumulated amortization was $58,138,494 as of
December 31, 2022 and $57,834,093 as of December 31, 2021. As previously
disclosed, significantly lower 2020 oil prices used in calculating the net
profits interests proved reserves have resulted in significantly higher
amortization in 2021 and full amortization of the working interest new profits
interests. Amortization of the NPI does not impact unitholder distributions or
the determination of proved reserves.

Oil and Gas Reserves



The proved oil and gas reserves for the underlying properties are estimated by
independent petroleum engineers. The estimated reserves for the underlying
properties are then used by XTO Energy to calculate the estimated oil and gas
reserves attributable to the net profits interests. Reserve engineering is a
subjective process that is dependent upon the quality of available data and the
interpretation thereof. Estimates by different engineers often vary, sometimes
significantly. In addition, physical factors such as the results of drilling,
testing and production subsequent to the date of an estimate, as well as
economic factors such as changes in product prices, may justify revision of such
estimates. Because proved reserves are required to be estimated using 12-month
average prices, based on the first-day-of-the-month price for each month in the
period, estimated reserve quantities can be significantly impacted by changes in
product prices. Accordingly, oil and gas quantities ultimately recovered and the
timing of production may be substantially different from original estimates.

The standardized measure of discounted future net cash flows and changes in such
cash flows, as reported in Note 8 to Financial Statements under Item 8.
Financial Statements and Supplementary Data, is prepared using assumptions
required by the Financial Accounting Standards Board and the Securities and
Exchange Commission. Such assumptions include using 12-month average oil and gas
prices, based on the first-day-of-the-month price for each month in the period,
and year end costs for estimated future development and production expenditures,
including recovery of cumulative excess costs remaining at year end. Discounted
future net cash flows are calculated using a 10 percent rate. Changes in any of
these assumptions, including consideration of other factors, could have a
significant impact on the standardized measure. Accordingly, the standardized
measure does not represent XTO Energy's or the Trustee's estimated current
market value of proved reserves.

Forward-Looking Statements



Certain information included in this annual report and other materials filed, or
to be filed, by the Trust with the Securities and Exchange Commission (as well
as information included in oral statements or other written statements made or
to be made by XTO Energy or the Trustee) contain forward-looking statements
within the meaning of Section 21E of the Securities Exchange Act of 1934, as
amended, and Section 27A of the Securities Act of 1933, as amended, relating to
the Trust, operations of the underlying properties and the oil and gas industry.
Such forward-looking statements may concern,

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among other things, development activities, future development plans, increased
density drilling, reserve-to-production ratios, future production, future net
cash flows, maintenance projects, development, production, regulatory and other
costs, oil and gas prices and expectations for future demand, the impact of
inflation and economic downturns on economic activity, government policy and its
impact on oil and gas prices and future demand, the development and
competitiveness of alternative energy sources, pricing differentials, proved
reserves, production levels, arbitration, litigation, liquidity, financing,
political and regulatory matters, such as tax and environmental policy, climate
policy, trade barriers, sanctions, war and other political or security
disturbances, and competition. Such forward-looking statements are based on XTO
Energy's and the Trustee's current plans, expectations, assumptions, projections
and estimates and are identified by words such as "may," "expects," "intends,"
"plans," "projects," "anticipates," "predicts," "believes," "goals,"
"estimates," "should," "could," "would," and similar words that convey the
uncertainty of future events. These statements are not guarantees of future
performance and involve certain risks, uncertainties and assumptions that are
difficult to predict. Therefore, actual financial and operational results may
differ materially from expectations, estimates or assumptions expressed in,
implied in, or forecasted in such forward-looking statements. Some of the risk
factors that could cause actual results to differ materially are explained in
Item 1A. Risk Factors.

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