This document contains forward-looking statements, which include expectations or
forecasts of future events. Please refer to "Forward-Looking Statements" which
follows the Table of Contents of this Form 10-K for an explanation of these
types of statements.

Overview and Trust Termination



The Trust does not conduct any operations or activities. The Trust's purpose is,
in general, to hold the NPI, to distribute to unitholders cash that the Trust
receives pursuant to the NPI, and to perform certain administrative functions
with respect to the NPI and the Trust units. The Trust derives substantially all
of its income and cash flows from the NPI. The NPI entitles the Trust to receive
90% of the net proceeds from the sale of production from the underlying
properties until the Trust terminates on December 31, 2021.

Oil and gas prices historically have been volatile and may fluctuate widely in
the future. The table below highlights these price trends by listing quarterly
average NYMEX crude oil and natural gas prices for the periods indicated through
December 31, 2020. The 2020 NPI distributions are mainly affected by October
2019 through September 2020 oil prices and September 2019 through August 2020
natural gas prices.



                            2018                                    2019                                    2020
              Q1        Q2        Q3        Q4        Q1        Q2       

Q3 Q4 Q1 Q2 Q3 Q4 Crude oil $ 62.89 $ 67.90 $ 69.50 $ 58.83 $ 54.90 $ 59.83 $ 56.45 $ 56.96 $ 46.08 $ 27.85 $ 40.94 $ 42.67 Natural gas $ 3.13 $ 2.77 $ 2.88 $ 3.62 $ 3.00 $ 2.58 $ 2.29 $ 2.44 $ 1.88 $ 1.66 $ 1.89 $ 2.51






Oil prices declined sharply during 2020 primarily in response to Saudi Arabia's
announcement of plans to abandon previously agreed upon output restraints and
the economic effects of the coronavirus ("COVID-19") pandemic on the demand for
oil and natural gas. While prices began to recover in the second half of 2020,
uncertainties related to demand for oil and natural gas products remain as the
pandemic continues to impact the world economy. Continued low oil and gas prices
on production from the underlying properties could cause (i) a reduction in the
amount of net proceeds to which the Trust is entitled, which could materially
reduce or completely eliminate the amount of cash available for distribution to
Trust unitholders, (ii) a reduction in the amount of oil, natural gas and
natural gas liquids that are economic to produce from the underlying properties,
and (iii) the recognition of impairment charges on the NPI. All costless collar
hedge contracts terminated as of December 31, 2014 and no additional hedges are
allowed to be placed on the Trust assets. Consequently, there are no further
cash settlement gains or losses on commodity derivatives for inclusion in the
Trust's computation of net proceeds (or net losses, as the case may be), and the
Trust therefore has increased exposure to oil and natural gas price volatility.
Additionally, in the current commodity price environment, the Trust's
distributions have increased sensitivity to fluctuations in operating and
capital expenditures.

Trust Termination. The Trust will wind up its affairs and terminate shortly
after the NPI termination date, which is December 31, 2021. After the NPI
termination date of December 31, 2021, it is anticipated that the Trustee will
make a final quarterly cash distribution, if any, no later than March 1, 2022,
to the Trust unitholders of record on the 50th day following December 31, 2021,
and the Trust will terminate. After the termination of the Trust, it will pay no
further distributions.

Since the assets of the Trust are depleting assets, a portion of each cash distribution paid, if any, on the Trust units is a return of capital to investors, with the remainder being considered as a return on investment or yield. As a result, the market price of the Trust units will decline to zero at the termination of the Trust.

Capital Expenditure Activities



The primary goal of the planned capital expenditures relative to the underlying
properties is to mitigate a portion of the natural decline in production from
producing properties. No assurance can be given, however, that any such
expenditures will be made, or if made, will result in production in commercially
paying amounts, if any, or that the characteristics of any newly developed well
will match the characteristics of existing wells on the underlying properties or
the operator's historical drilling success rate. Per the reserve report, the
underlying properties do not have any planned capital expenditures through the
trust termination date of December 31, 2021 based upon the economic inputs
utilized to prepare the reserves report. However, with respect to fields for
which Whiting is not the operator, Whiting has limited control over the timing
and amount of capital expenditures relative to such fields and it is possible
that unbudgeted capital expenditures will be incurred during 2021. The
possibility for unbudgeted capital expenditures is increased on non-operated
properties subject to enhanced oil recovery techniques where expenditures may be
incurred for CO2 that is injected into the field to recover hydrocarbons. An
operator may believe it is more costly or infeasible to temporarily shut-in the
field as compared to operating the

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properties at a loss, or may believe such losses will be offset by future income
from such properties, including periods after the termination of the NPI. Refer
to the risk factor entitled  "Whiting has limited control over activities on the
underlying properties that Whiting does not operate, which could reduce
production from the underlying properties, increase capital expenditures and
reduce cash available for distribution to Trust unitholders" in Item 1A of this
Annual Report on Form 10-K.

Annual capital expenditure limitation. The capital expenditures included in the
net proceeds attributable to the underlying properties are subject to an annual
limitation which became effective January 1, 2018. As a result, the sum of the
capital expenditures and amounts reserved for approved capital expenditure
projects for each year beginning in 2018 may not exceed the average annual
capital expenditure amount. The "average annual capital expenditure amount"
means the quotient of (x) the sum of the capital expenditures and amounts
reserved for approved capital expenditure projects with respect to the
three years ended December 31, 2017, divided by (y) three, which amount equals
$3.9 million and will be increased annually by 2.5% to account for expected
increased costs due to inflation. The capital expenditures incurred during 2020
and 2019 did not exceed this annual limitation, and capital expenditures
included in the net proceeds attributable to the underlying properties cannot
exceed $4.3 million during the year ending December 31, 2021.

Farm-out agreements. In an effort to develop the underlying properties while
limiting additional capital expenditures for the Trust, prior to December 31,
2020, Whiting Oil and Gas entered into three farm-out agreements with a
third-party partner covering (i) 5,127 gross acres in eight leasehold sections
within the Keystone South field in Winkler, Texas in April 2016, as amended in
July 2020 (the "Keystone South farm-out"), (ii) 9,740 gross acres in
approximately 15 units (which unit size is determined by the lateral well
length) within the Signal Peak field in Howard County, Texas in February 2017,
as amended in May 2018, September 2019 and February 2020 (the "Signal Peak
farm-out") and (iii) 640 gross acres in one leasehold section within the Flying
W, SE field in Winkler County, Texas in March 2017 (the "Flying W farm-out").

These farm-out agreements provide the third-party partner with the option, but
not the obligation, to drill one well in each of the leasehold sections or
units, as the case may be, subject to the applicable farm-out agreement, whereby
the partner will pay 100% of the related drilling and well completion costs to
earn a 75% working interest. As a result, the applicable underlying properties
will consist of (i) 25% of the original working interest in these properties and
(ii) an overriding royalty interest equal to the difference between 25% and the
lease burdens of record. Upon completion of one well in each section or unit, as
the case may be, pursuant to the terms of the applicable agreements, the partner
has the option to drill (i) up to 15 additional wells under the Keystone South
farm-out, (ii) up to 12 additional wells under the Signal Peak farm-out and
(iii) one additional well under the Flying W farm-out. For each of these
additional optional wells, the partner is required to pay 85% of the drilling
and well completion costs otherwise ascribed to the underlying properties for a
75% working interest. Given the Trust's interest in the NPI, the Trust would be
responsible for 13.5% of the underlying properties' remaining drilling and well
completion costs at the 90% NPI, subject to the average annual capital
expenditure amount limitation discussed above.

The third-party partner drilled and completed the first three wells pursuant to
the terms of the Keystone South farm-out agreement during 2017, a fourth well
was drilled and completed during the second quarter of 2018, a fifth well was
drilled and completed during the fourth quarter of 2019, and a sixth well was
drilled in the first quarter of 2021 which is scheduled for completion before
the second quarter of 2021, whereby the partner earned a 75% working interest in
each of the underlying properties' respective leasehold sections. The partner
has no obligation to drill and complete any additional wells, and the Keystone
South farm-out agreement will terminate during the fourth quarter of 2021 if no
additional drilling has commenced by that time.

During the fourth quarter of 2019, the third-party partner drilled and completed
the first well under the Signal Peak farm-out, whereby the partner earned a 75%
working interest in the underlying properties' respective leasehold section. The
partner has no obligation to drill and complete any additional wells, and the
Signal Peak farmout will terminate during the fourth quarter of 2021 if no
additional drilling has commenced by that time.

In addition, the partner drilled and completed the first well under the Flying W
farm-out during the second quarter of 2018, whereby the partner earned a 75%
working interest in the underlying properties' respective leasehold section.

Additionally, in February 2021, Whiting entered into an additional farm-out
agreement with a third-party partner, which agreement covers 1,091 gross acres
within the Agua Dulce field in Nueces County, Texas. The agreement provides the
partner with the option, but not the obligation, to drill one well in each of
the two leasehold sections subject to the farm-out agreement, whereby the
partner will pay 100% of the related drilling and well completion costs to earn
a 90% working interest, which results in the underlying properties retaining (i)
a 10% working interest and (ii) an overriding royalty interest equal to the
difference between 24% and the lease burdens of record, without incurring any
capital costs for these wells. Pursuant to the terms of the agreement, within
365 days of the completion of either well in either section, the partner has the
option to drill a second well in the respective section where the underlying
properties can elect

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to receive a 10% working interest or a 5% carried working interest. Upon
completion of a second well in either section, the partner has the option to
drill subsequent wells in either section where the underlying properties can
retain a 10% working interest (if such option was elected for the respective
second well) or can receive a 5% working interest or a 2.5% carried working
interest.

Results of Trust Operations



The following is a summary of income from net profits interest and distributable
income received by the Trust for each respective period (dollars in thousands,
except per Bbl, per Mcf and per BOE amounts):


                                           Trust Results

                                                               Year Ended December 31,
                                                        2020             2019             2018
Sales volumes:
Oil from underlying properties (MBbl)(1)                 789 (4)          917 (5)          955 (6)
Natural gas from underlying properties (MMcf)            917 (4)        1,111 (5)        1,307 (6)
Total production (MBOE)                                  942            1,103            1,173
Average sales prices:
Oil (per Bbl)(1)                                   $   37.47         $  48.40         $  54.28
Natural gas (per Mcf)(2)                           $    1.50         $   2.30         $   3.29
Cost metrics:
Lease operating expenses (per BOE)                 $   28.48         $  29.52         $  24.64
Production tax rate (percent of total revenues)          4.8 %            5.0 %            5.1 %

Revenues:


Oil sales(1)                                       $  29,558 (4)     $ 44,407 (5)     $ 51,827 (6)
Natural gas sales                                      1,371 (4)        2,558 (5)        4,296 (6)
Total revenues                                        30,929           46,965           56,123
Costs:
Lease operating expenses                              26,815           32,555           28,900
Production taxes                                       1,473            2,327            2,887
Development costs                                      1,358            1,951            3,309
Cash settlements on commodity derivatives(3)               -                -                -
Total costs                                           29,646           36,833           35,096
Net proceeds                                           1,283           10,132           21,027
Net profits percentage                                    90 %             90 %             90 %
Income from net profits interest                       1,155            9,119           18,924
Provision for estimated Trust expenses               (1,100)            (800)            (800)
Montana state income tax withheld                        (7)             (15)             (15)
Accumulated net losses funded by Whiting                 220                -                -
Distributable income                               $     268         $  8,304         $ 18,109


____________

(1) Oil includes natural gas liquids.

The average sales price of natural gas for the gas production months within

the year ended December 31, 2018 exceeded the average NYMEX gas price for the

same months within the period due to the "liquids rich" content of a portion (2) of the natural gas volumes produced by the underlying properties. While the

gas volumes produced by the underlying properties during the years ended 2020

and 2019 are still "liquids rich," such liquids content did not result in a

premium to the NYMEX natural gas price due to depressed realized liquids

prices during those periods.

As discussed in "Quantitative and Qualitative Disclosures About Market Risk"

in Item 7A of this Annual Report on Form 10-K, all costless collar hedge (3) contracts terminated as of December 31, 2014, and no additional hedges are

allowed to be placed on Trust assets. Consequently, there are no further cash

settlements on commodity hedges, and the Trust will have increased exposure


    to oil and natural gas price volatility.


    Oil and gas sales volumes and related revenues for the year ended

December 31, 2020 (consisting of Whiting's February 2020 and May 2020 (4) distributions to the Trust, and the August 2020 and November 2020 net losses)


    generally represent crude oil production from October 2019 through
    September 2020 and natural gas production from September 2019 through
    August 2020.


    Oil and gas sales volumes and related revenues for the year ended

December 31, 2019 (consisting of Whiting's February 2019, May 2019, (5) August 2019 and November 2019 distributions to the Trust) generally represent

crude oil production from October 2018 through September 2019 and natural gas

production from September 2018 through August 2019.

Oil and gas sales volumes and related revenues for the year ended December

31, 2018 (consisting of Whiting's February 2018, May 2018, August 2018 and (6) November 2018 distributions to the Trust) generally represent crude oil


    production from October 2017 through September 2018 and natural gas
    production from September 2017 through August 2018.


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Comparison of Results of the Trust for the Years Ended December 31, 2020 and 2019



Income from Net Profits Interest. Income from net profits interest is recorded
on a cash basis when NPI proceeds are received by the Trust from Whiting. NPI
proceeds are based on the oil and gas production for which Whiting has received
payment within one month following the end of the most recent fiscal quarter.
Whiting receives payment for its crude oil sales generally within 30 days
following the month in which it is produced, and Whiting receives payment for
its natural gas sales generally within 60 days following the month in which it
is produced. Income from net profits interest is generally a function of oil and
gas revenues, lease operating expenses, production taxes and development costs
as follows:

Revenues. Oil and natural gas revenues were $16 million (or 34%) lower in 2020
compared to 2019. Sales revenue is a function of average commodity prices
realized and oil and gas volumes sold. The decrease in revenue between periods
was primarily due to lower realized oil prices and a decline in oil production
volumes. The average sales price realized decreased for crude oil and natural
gas by 23% and 35%, respectively, between periods primarily as a result of lower
NYMEX oil and gas prices, which were partially offset by improved oil and gas
differentials. Crude oil production volumes decreased by 129 MBbls (or 14%)
between periods and natural gas volumes decreased by 194 MMcf (or 17%) in 2020
compared to 2019.

The decrease in oil and gas volumes between periods were primarily related to
(i) normal field production decline, (ii) the permanent shutdown of the
third-party operated Chatom Gas Plant in November 2019, which impacts wells
located in the Lake Como field and (iii) the partial year shut-in of the Garland
field and other wells in response to depressed oil and gas pricing for a portion
of 2020. Based on the December 31, 2020 reserve report, overall production
attributable to the underlying properties is expected to decline at
a year-over-year rate of approximately 12.5% for oil and 12.0% for gas from 2020
through the NPI termination date of December 31, 2021.

Lease Operating Expenses. LOE decreased $5.7 million (or 18%) during the year
ended December 31, 2020 compared to the same 2019 period primarily due to a $3.9
million decrease in oilfield goods and services, which includes a decrease of
$1.9 million in workover costs between periods and a $1.8 million decrease due
to lower labor and other operating costs. The decrease in overall LOE coupled
with the decline in overall production volumes resulted in a decrease in LOE on
a per BOE basis of 4% from $29.52 during 2019 to $28.48 for 2020.

Production Taxes. Production taxes are typically calculated as a percentage of
oil and gas revenues. Production taxes as a percentage of revenues decreased
from 5.0% during 2019 to 4.8% during 2020. Additionally, overall production
taxes in 2020 decreased $0.9 million (or 37%) as compared to 2019 primarily due
to lower oil and natural gas revenues between periods.

Development Costs. Development costs were $0.6 million (or 30%) lower in 2020 as
compared to 2019. Development costs decreased primarily due to reduced drilling
and capital workover costs in the Justis, Mary Two, Garland and Keystone South
fields.

Provision for estimated Trust expenses. The provision for estimated Trust
expenses increased $0.3 million during 2020 compared to the same 2019 period due
to the expected impacts of (i) the sharp decline in oil prices that occurred in
March 2020 which oil prices remained depressed at the time the expenses were
estimated in August 2020 and (ii) the COVID-19 pandemic. In consideration of the
anticipated impacts, the Trustee increased the provision for Trust expenses to
enable it to pay the Trust's future liabilities for approximately 12 months from
the time at which it was established.

Accumulated Net Losses Funded by Whiting. During the year ended December 31,
2020, the net profits interest generated accumulated net losses of $0.2 million
attributable to the Trust primarily due to the decline in oil and natural gas
prices, which lower commodity prices caused production and development costs on
the underlying properties to exceed the proceeds from production. Neither the
Trust nor the unitholders are liable for any net losses that are generated by
the net profits interest. Whiting funds the payment of any such net losses until
the accumulated net losses, plus accrued interest at the money market interest
rate, are recovered from future NPI net profits. All accumulated net losses,
plus accrued interest, must be repaid to Whiting before any further
distributions will be made to Trust unitholders. There were no accumulated net
losses during the year ended December 31, 2019.

Comparison of Results of the Trust for the Years Ended December 31, 2019 and 2018



For a discussion of the Trust's financial performance in the year ended
December 31, 2019 compared to the year ended December 31, 2018, refer to Part
II, Item 7 "Trustee's Discussion and Analysis of Financial Condition and Results
of Operations" of the 2019 Annual Report on Form 10-K filed with the SEC on
March 24, 2020 under the subheading "Results of Trust Operations - Comparison of
Results of the Trust for the Years Ended December 31, 2019 and 2018."

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Liquidity and Capital Resources



Overview. The Trust has no source of liquidity or capital resources other than
cash flows from the NPI. Other than Trust administrative expenses, including any
reserves established by the Trustee for future liabilities, the Trust's only use
of cash is for distributions to Trust unitholders. Administrative expenses
include payments to the Trustee and the Delaware Trustee, a quarterly fee paid
to Whiting pursuant to an administrative services agreement, and expenses in
connection with the discharge of the Trustee's duties, including third-party
engineering, audit, accounting and legal fees. Each quarter, the Trustee
determines the amount of funds available for distribution to unitholders.
Available funds are the excess cash, if any, received by the Trust from the NPI
and other sources (such as interest earned on any amounts reserved by the
Trustee) that quarter, over the Trust's expenses for that quarter. Available
funds are reduced by (i) any cash the Trustee decides to hold as a reserve
against future liabilities and (ii) any accumulated net losses to be recovered
by Whiting, plus accrued interest. If the NPI generates net losses or limited
net proceeds (which was the case during the first  and fourth quarters of 2019
and each quarter of 2020), the net profits interest may not provide sufficient
funds to the Trustee to enable it to pay all of the Trust's administrative
expenses. The Trust may borrow the amount of funds required to pay its
liabilities if the Trustee determines that the cash on hand and the cash to be
received, which is dependent on future net proceeds, are insufficient to cover
the Trust's liabilities. If the Trust borrows funds, the Trust unitholders will
not receive distributions until the borrowed funds together with any accumulated
net losses and accrued interest are repaid. 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. As of February 28, 2021, the Trust had cash
reserves of $0.3 million for the payment of its administrative expenses.

The Trust is highly dependent on Whiting for multiple services, including the
operation of wells, remittance of net proceeds generated by the NPI and
administrative services performed on behalf of the Trust. Whiting's continued
ability to operate wells, including those with interests held by the NPI,
depends on its future financial condition, access to capital and other factors
outside of its control. On April 1, 2020, Whiting and certain of its direct and
indirect subsidiaries, including Whiting Oil and Gas (collectively, the
"Debtors") commenced voluntary cases under chapter 11 of the United States
Bankruptcy Code (the "Bankruptcy Code") in the United States Bankruptcy Court
for the Southern District of Texas (the "Bankruptcy Court"). On June 30, 2020,
the Debtors filed the Joint Chapter 11 Plan of Reorganization of Whiting
Petroleum Corporation and its Debtor affiliates (as amended, modified and
supplemented, the "Plan").  On August 14, 2020, the Bankruptcy Court confirmed
the Plan.  On September 1, 2020, the Debtors emerged from the Chapter 11 Cases
and the Plan became effective in accordance with its terms.

Administrative Services Fee. Under the terms of the administrative services
agreement, the Trust is obligated to pay a quarterly administration fee of
$50,000 to Whiting 60 days following the end of each calendar quarter. General
and administrative expenses in the Trust's statements of distributable income
for the years ended December 31, 2020, 2019 and 2018 includes $200,000 in each
period for quarterly administrative fees paid to Whiting.

Trustee Administrative Fee. Under the terms of the Trust agreement, the Trust
pays an annual administrative fee to the Trustee of $175,000, which is paid in
four quarterly installments and is billed in arrears. Starting in 2017, such fee
escalated by 2.5% each year and therefore, the annual administrative fee paid to
the Trustee for 2020, 2019 and 2018 services was $193,167, $188,456 and
$183,859, respectively. Accordingly, the escalated quarterly administrative fee
of $48,292 was paid by the Trust starting in the second quarter of 2020. General
and administrative expenses in the Trust's statements of distributable income
for the years ended December 31, 2020, 2019 and 2018 include $191,989, $187,307
and $182,738, respectively, for administrative fees paid to the Trustee.

Letter of Credit. In June 2012, Whiting established a $1.0 million letter of
credit for the Trust in order to provide a mechanism for the Trustee to pay the
operating expenses of the Trust, in the event that Whiting should fail to lend
funds to the Trust, if requested to do so by the Trustee. This letter of credit
will not be used to fund NPI distributions to unitholders, and if the Trustee
were to draw on the letter of credit or were to borrow funds from Whiting or
other entities, no further distributions would be made to unitholders until all
such amounts have been repaid by the Trust. Such letter of credit will expire
December 31, 2021. As of December 31, 2020 and 2019, the Trust had no borrowings
under the letter of credit.

Reserve for Expenditures. Whiting may reserve from the gross proceeds amounts up
to a total of $2.0 million at any time for future development, maintenance or
operating expenses. Whiting did not fund such reserve during the year ended
December 31, 2019. Instead, Whiting deducted from the Trust's gross proceeds
only actual costs paid for development, maintenance and operating expenses.
During the second quarter of 2020, Whiting established a reserve for future
expenditures of $1.6 million in response to the expectation that future gross
proceeds from the underlying properties may be insufficient to cover the future
operating costs of the underlying properties due to (i) the sharp decline in oil
prices in March 2020 which oil prices remained depressed at the time the reserve
was established in May 2020 and (ii) the impacts of the COVID-19 pandemic. In
the third quarter of 2020, the $1.6 million reserve was released and

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applied by Whiting to qualifying expenses incurred during the period.
Accordingly, there is no remaining reserve for expenditures to offset future
development, maintenance or operating expenses on the underlying properties and
related activities.

Plugging and Abandonment. Plugging and abandonment costs related to the
underlying properties, net of any proceeds received from the salvage of
equipment, cannot be included as a deduction in the calculation of net proceeds
pursuant to the terms of the conveyance agreement. During the year ended
December 31, 2020, Whiting incurred $2.4 million of plugging and abandonment
charges on the underlying properties, and these costs were not charged to the
unitholders of the Trust..

New Accounting Pronouncements

There were no accounting pronouncements issued during the year ended December 31, 2020 applicable to the Trust or its financial statements.

Critical Accounting Policies and Estimates

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 GAAP. This
method of accounting is consistent with reporting of taxable income to the Trust
unitholders. The most significant differences between the Trust's financial
statements and those prepared in accordance with GAAP are:

Income from net profits interest is recognized when NPI distributions are

a. received by the Trust rather than accrued in the month of production that they

are earned;

b. Distributions to Trust unitholders are recorded when paid by the Trust rather

than accrued when owed;

Trust general and administrative expenses (which include the Trustee's fees as

c. well as administrative, accounting, engineering, legal, and other professional

fees) are recorded when paid by the Trust rather than when incurred; and

d. Cash reserves for Trust expenses may be established by the Trustee for certain

expenditures that would not be recorded as contingent liabilities under GAAP.




While these statements differ from financial statements prepared in accordance
with GAAP, the modified cash basis of reporting revenues and distributions is
considered to be the most meaningful for the Trust and its results because
quarterly distributions to the Trust unitholders are based on net cash receipts.
This comprehensive basis of accounting other than GAAP corresponds to the
accounting permitted for royalty trusts by the SEC, as specified by FASB ASC
Topic 932, Extractive Activities - Oil and Gas: Financial Statements of Royalty
Trusts. For additional information regarding the Trust's basis of accounting,
refer to Note 2 to the Financial Statements included in Item 8 of this Annual
Report on Form 10-K.

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 Whiting less accumulated amortization and impairment
charges to date.

Oil and Gas Reserves. The proved oil and gas reserves for the underlying
properties are estimated by independent petroleum engineers. 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 and production costs, may
justify revision of such estimates. Accordingly, oil and gas quantities
ultimately recovered and the timing of production may be substantially different
from estimates, and the Trust is unable to predict changes in reserve quantity
estimates as such quantities are dependent on future economic and operational
conditions.

The standardized measure of discounted future net cash flows is prepared using
assumptions made pursuant to FASB and SEC guidelines. Such assumptions include
using average fiscal-year oil and gas prices (calculated as the unweighted
arithmetic average of the first-day-of-the-month price for each month within the
12-month reporting period) and year-end costs for estimated future production
and development expenditures. Discounted future net cash flows are calculated
using a 10% discount rate. Changes in any of these assumptions could have a
significant impact on the standardized measure. The standardized measure does
not necessarily result in an estimate of the current fair market value of proved
reserves.

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Amortization of Net Profits Interest. The investment in net profits interest is
amortized using the units-of-production method. The rate of recording
amortization is dependent upon the Trust's estimates of total proved reserves,
which incorporates various assumptions and future projections. If the estimates
of total proved reserves decline significantly, the rate at which amortization
expense is recorded would increase, reducing Trust corpus.

Impairment of Investment in Net Profits Interest. The value of the investment in
net profits interest is reviewed whenever the Trustee judges that events and
circumstances indicate that the recorded carrying value of the investment in net
profits interest may not be recoverable. Potential impairments of the investment
in net profits interest are determined by comparing future net undiscounted cash
flows based on the oil and gas reserves attributable to the underlying
properties to the net book value at the end of each period. If the net
capitalized cost exceeds undiscounted future cash flows, the cost of the
investment in net profits interest is written down to "fair value," which is
determined using net discounted future cash flows from the net profits interest.
Different pricing assumptions, discount rates, or oil and gas reserve estimates
could result in a different calculated impairment.

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