Baytex Energy Corp.                                            
Supplemental Disclosures about Extractive Activities - Oil and Gas (unaudited)
December 31, 2021


Exhibit 99.10

The following disclosures have been prepared by Baytex Energy Corp. (“Baytex” or the “Company”) in accordance with Accounting Standards Codification 932 “Extractive Activities - Oil & Gas” (“ASC 932”) issued by the Financial Accounting Standards Board. The standard requires the use of a 12 month average price to estimate proved reserves calculated as the unweighted arithmetic average of first-day-of-the-month prices within the 12 month period prior to the end of the reporting period.

Petroleum and Natural Gas Reserves Information

Users of this information should be aware that the process of estimating quantities of "proved developed" and "proved undeveloped" crude oil, natural gas liquids, bitumen and natural gas is very complex, requiring significant subjective decisions in the evaluation of all available geological, engineering and economic data for each reservoir. The data for a given reservoir may change substantially over time as a result of numerous factors including, but not limited to, additional development activity, evolving production history, and continual reassessment of the viability of production under varying economic conditions. Consequently, material revisions to existing reserve estimates occur from time to time. Although every reasonable effort is made to ensure that reserve estimates reported represent the most accurate assessments possible, the significance of the subjective decisions required and variances in available data for reservoirs make these estimates generally less precise than other estimates presented in connection with financial statement disclosures. Future fluctuations in prices and costs, production rates, or changes in political or regulatory environments could cause the Company's reserves to be materially different from that presented.

Proved petroleum and natural gas reserves are the estimated quantities of crude oil, natural gas and natural gas liquids (“NGL”) that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions.

Proved developed petroleum and natural gas reserves are reserves that can be expected to be recovered through existing wells with existing equipment and operating methods, which may require future expenditures.

Proved undeveloped petroleum and natural gas reserves are reserves that are expected to be recovered from known accumulations where a future expenditure is required.

Proved reserves and production volumes are presented net of royalties. Such royalties are subject to change by legislation or regulation and can also vary depending on production rates, selling prices and timing of initial production. Figures reported as natural gas reserves and production volumes do not include flared gas, injected gas or gas consumed in operations. All natural gas reserves and production volumes presented are sales volumes. Undrilled locations underlying the estimates of our proved undeveloped reserves as of December 31, 2020 and 2021 are included in a development plan that was adopted by Baytex for the applicable year as a result of our annual long-range planning process and associated corporate financial model and all such locations were scheduled to be drilled within five years of the initial development plan adoption date.

The changes in Baytex's net proved crude oil, NGL, bitumen and natural gas reserves under constant prices and costs for the two-year period ended December 31, 2021 were as follows:
CanadaUnited States
Crude OilNGLBitumenNatural
Gas
Crude OilNGLBitumenNatural
Gas
(mbbl)(mbbl)(mbbl)(mmcf)(mbbl)(mbbl)(mbbl)(mmcf)
Net proved reserves
December 31, 201996,879 2,804 11,136 70,188 37,685 53,675 — 165,363 
Revisions of previous estimates(49,515)(892)(8,251)(11,898)449 (2,736)— (794)
Improved recovery— — — — — — — — 
Purchases of minerals in place— — — — — — 
Extensions and discoveries1,092 516 2,824 10,364 486 446 — 1,550 
Production(12,812)(384)(825)(14,271)(3,493)(2,992)— (11,530)
Sales of minerals in place(13)— — (23)— — — — 
December 31, 202035,639 2,044 4,883 54,367 35,127 48,393 — 154,589 
Revisions of previous estimates28,031 729 175 31,805 1,393 250 — 5,583 
Improved recovery— — — — — — — — 
Purchases of minerals in place57 — — — — — — — 
Extensions and discoveries37,694 3,223 — 42,652 2,128 2,799 — 10,180 
Production(11,977)(580)(568)(16,973)(3,819)(2,736)— (10,187)
Sales of minerals in place(12)(17)— (486)(14)(5)— (25)
December 31, 202189,431 5,400 4,490 111,364 34,814 48,701 — 160,140 
Net proved developed reserves
End of year 201947,577 1,179 9,286 44,537 16,119 23,906 — 71,748 
End of year 202020,749 1,616 808 37,858 15,809 21,277 — 67,187 
End of year 202141,918 2,184 592 68,498 18,750 22,334 — 72,257 
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Baytex Energy Corp.                                            
Supplemental Disclosures about Extractive Activities - Oil and Gas (unaudited)
December 31, 2021


CanadaUnited States
Crude OilNGLBitumenNatural
Gas
Crude OilNGLBitumenNatural
Gas
(mbbl)(mbbl)(mbbl)(mmcf)(mbbl)(mbbl)(mbbl)(mmcf)
Net proved undeveloped reserves
End of year 201949,302 1,625 1,850 25,651 21,566 29,769 — 93,615 
End of year 202014,889 428 4,075 16,508 19,318 27,116 — 87,402 
End of year 202147,513 3,216 3,898 42,866 16,064 26,368 — 87,882 
Total
Crude OilNGLBitumenNatural
Gas
Total
(mbbl)(mbbl)(mbbl)(mmcf)(mboe)
Net proved reserves
December 31, 2019134,564 56,479 11,136 235,551 241,438 
Revisions of previous estimates(49,066)(3,628)(8,251)(12,693)(63,060)
Improved recovery— — — — — 
Purchases of minerals in place— — 
Extensions and discoveries1,578 962 2,824 11,914 7,349 
Production(16,305)(3,376)(825)(25,802)(24,806)
Sales of minerals in place(13)— — (23)(17)
December 31, 202070,766 50,437 4,883 208,956 160,912 
Revisions of previous estimates29,423 980 175 37,387 36,809 
Improved recovery— — — — — 
Purchases of minerals in place57 — — — 57 
Extensions and discoveries39,822 6,022 — 52,832 54,649 
Production(15,797)(3,316)(568)(27,160)(24,208)
Sales of minerals in place(26)(22)— (511)(133)
December 31, 2021124,245 54,101 4,490 271,504 228,087 
Net proved developed reserves
End of year 201963,696 25,085 9,286 116,285 117,447 
End of year 202036,559 22,894 808 105,045 77,768 
End of year 202160,668 24,518 592 140,755 109,237 
Net proved undeveloped reserves
End of year 201970,869 31,395 1,850 119,266 123,991 
End of year 202034,207 27,544 4,075 103,910 83,144 
End of year 202163,578 29,584 3,898 130,749 118,851 

Revisions of previous estimates

In 2020, the Company realized total proved revisions of -63,060 mboe. These revisions are primarily due to changes in the constant pricing from YE 2019 (the average first day-of-the-month price for WTI decreased from $55.85/bbl in 2019 to $39.54/bbl in 2020). The Company realized a 65,780 mboe loss in Canada and a 3,901 mboe loss in the US due to pricing changes. The Company also realized positive revisions in both Canada and the US. In Canada positive revisions of 5,139 mboe were realized due to the result of performance versus previous forecasts. In the U.S. positive revisions of 1,482 mboe are also the result of performance versus previous forecasts.

Revisions of previous estimates

In 2021, the Company realized total proved revisions of 36,809 mboe. These revisions consisted of: (i) positive revisions of 29,574 mboe in Canada and 3,182 mboe in the US due to an increase in YE 2021 constant pricing as compared to YE 2020 (WTI moved to $66.55/bbl from $39.54/bbl), (ii) positive revisions of 7,576 mboe in our Heavy oil assets and 344 mboe in our Duvernay assets as a result of improved performance as compared to previous forecasts, (iii) negative revisions of 2,417 mboe in our Viking assets and 609 mboe in our Eagle Ford assets due to lower performance as compared to previous forecasts, and (iv) negative revisions of 841 mboe due to capital plan changes in our Conventional assets.

Extensions and Discoveries

In 2021, the Company added 54,649 mboe of net proved reserves These revisions consisted of positive revisions of 48,026 in Canada and 6,623 in the United States due to drilling activity undertaken in 2021.

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Baytex Energy Corp.                                            
Supplemental Disclosures about Extractive Activities - Oil and Gas (unaudited)
December 31, 2021


Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Petroleum and Natural Gas Reserves

The following information has been developed utilizing procedures prescribed by ASC 932 and based on crude oil, NGL and natural gas reserves and production volumes estimated by Baytex's independent reserves evaluator, McDaniel & Associates Consultants Ltd. The methodology used in calculating our price assumptions for the standardized measure of discounted future net cash flows for reserves estimation is based upon the average first-day-of-the-month prices during the year.

Future production and development costs are based on forecast price assumptions and assume the continuation of existing economic, operating and regulatory conditions. Future income taxes are calculated by applying statutory income tax rates to future pre-tax cash flows after providing for the tax cost of the petroleum and natural gas properties based upon existing laws and regulations. A 10% discount factor was applied to the future net cash flows.

The information contained in the following table should not be considered as representative of realistic assessments of future cash flows, nor should the standardized measure of discounted future net cash flows be viewed as representative of the fair market value of Baytex's petroleum and natural gas properties. Management does not rely upon the following information in making investment and operating decisions. Such decisions are based upon a wide range of factors, including estimates of probable as well as proved reserves, and varying price and cost assumptions considered more representative of a range of possible economic conditions that may be anticipated. The prescribed discount rate of 10% may not appropriately reflect interest rates.

The computation of the standardized measure of discounted future net cash flows relating to proved oil and natural gas reserves was based on an unweighted arithmetic average of the first-day-of-the-month price for each month in 2021 and 2020.
Commodity Pricing
20212020
WTI crude (US$/bbl)$66.55 $39.54 
Edmonton Light crude (Cdn$/bbl)$78.15 $45.56 
Western Canadian Select crude (WCS) (1) (Cdn$/bbl)
$66.43 $36.90 
AECO spot (Cdn$/mmbtu)$3.57 $2.23 
Henry Hub (US$/mmbtu)$3.64 $2.00 
Exchange rate (US$/Cdn$)0.7980 0.7440 
(1)     Price used in the preparation of heavy oil and bitumen reserves in Canada.

The standardized measure of discounted future net cash flows relating to net proved petroleum and natural gas reserves are as follows:
             Canada        United States
Total (2)
(thousands of Canadian dollars)202120202021202020212020
Future cash inflows$6,585,366 $1,664,979 $5,864,021 $3,743,041 $12,449,387 $5,408,020 
Future production costs(2,467,626)(759,574)(1,597,747)(1,622,638)(4,065,373)(2,382,212)
Future development costs (1)
(1,828,635)(643,571)(824,991)(826,413)(2,653,627)(1,469,984)
Future income taxes(102,932)— (477,746)(18,752)(580,678)(18,752)
Future net cash flows (2)
2,186,172 261,834 2,963,538 1,275,238 5,149,710 1,537,072 
Deduct:
10% annual discount factor
(632,248)31,709 (1,315,108)(566,538)(1,947,356)(534,829)
Standardized measure (2)
$1,553,924 $293,543 $1,648,430 $708,701 $3,202,354 $1,002,243 
(1)Our estimated future costs to settle asset retirement obligations includes both: (i) estimated costs associated with future undrilled proved locations, and (ii) estimated costs associated with producing reserves. These costs are included in the “Future development costs” line.
(2)The data in the table may not add due to rounding.

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Baytex Energy Corp.                                            
Supplemental Disclosures about Extractive Activities - Oil and Gas (unaudited)
December 31, 2021


Reconciliation of Changes in Standardized Measure of Future Net Cash Flows Discounted at 10% per Year Relating to Net Proved Petroleum and Natural Gas Reserves
As at December 31, 2021
(thousands of Canadian dollars)
CanadaUnited States
Total (1)
Balance, beginning of year$293,543 $708,701 $1,002,243 
Sales, net of production costs(663,484)(436,864)(1,100,348)
Net change in prices and production costs related to future production992,488 1,166,873 2,159,360 
Changes in previously estimated production costs incurred during the period(284,411)(42,131)(326,542)
Development costs incurred during the period204,912 105,093 310,005 
Extensions, discoveries and improved recovery, net of related costs497,990 77,229 575,219 
Revisions of previous quantity estimates542,259 183,285 725,544 
Sales of reserves in place(1,553)(429)(1,982)
Purchases of reserves in place90 — 90 
Accretion of discount29,354 71,450 100,804 
Net change in income taxes(57,264)(184,776)(242,040)
Balance, end of year (1)
$1,553,924 $1,648,430 $3,202,354 

As at December 31, 2020
(thousands of Canadian dollars)
CanadaUnited States
Total (1)
Balance, beginning of year$1,263,346 $1,286,467 $2,549,814 
Sales, net of production costs(230,246)(201,770)(432,016)
Net change in prices and production costs related to future production(777,611)(773,203)(1,550,814)
Changes in previously estimated production costs incurred during the period607,008 134,253 741,260 
Development costs incurred during the period170,462 105,388 275,850 
Extensions, discoveries and improved recovery, net of related costs22,234 9,246 31,480 
Revisions of previous quantity estimates(887,803)(39,120)(926,923)
Sales of reserves in place(206)— (206)
Purchases of reserves in place24 — 24 
Accretion of discount126,335 134,536 260,870 
Net change in income taxes— 52,904 52,904 
Balance, end of year (1)
$293,543 $708,701 $1,002,243 
(1)The data in the table may not add due to rounding.

Capitalized Costs Relating to Petroleum and Natural Gas Producing Activities
As at December 31, 2021
(thousands of Canadian dollars)
CanadaUnited StatesTotal
Proved properties$6,713,666 $4,919,851 $11,633,517 
Unproved properties88,406 84,418 172,824 
Total capital costs6,802,072 5,004,269 11,806,341 
Accumulated depletion and impairment(4,257,833)(2,911,313)(7,169,146)
Net capitalized costs$2,544,239 $2,092,956 $4,637,195 

As at December 31, 2020
(thousands of Canadian dollars)
CanadaUnited StatesTotal
Proved properties$6,580,549 $4,843,127 $11,423,676 
Unproved properties99,989 91,876 191,865 
Total capital costs6,680,538 4,935,003 11,615,541 
Accumulated depletion and impairment(5,112,622)(3,233,506)(8,346,128)
Net capitalized costs$1,567,916 $1,701,497 $3,269,413 

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Baytex Energy Corp.                                            
Supplemental Disclosures about Extractive Activities - Oil and Gas (unaudited)
December 31, 2021


Costs Incurred in Petroleum and Natural Gas Property Acquisition, Exploration and Development Activities
For year ended December 31, 2021
(thousands of Canadian dollars)
CanadaUnited StatesTotal
Property acquisition costs
Proved properties$60 $— $60 
Unproved properties1,497 — 1,497 
Development costs (1)
204,912 105,093 310,005 
Exploration costs (2)
3,298 — 3,298 
Total$209,767 $105,093 $314,860 

For year ended December 31, 2020
(thousands of Canadian dollars)
CanadaUnited StatesTotal
Property acquisition costs
Proved properties$— $— $— 
Unproved properties— — — 
Development costs (1)
170,462 105,388 275,850 
Exploration costs (2)
4,490 — 4,490 
Total$174,952 $105,388 $280,340 
(1)     Development and facilities capital expenditures.
(2)     Cost of geological and geophysical capital expenditures and drilling costs for exploratory wells.

Results of Operations for Producing Activities
For year ended December 31, 2021
(thousands of Canadian dollars except per boe amounts)
CanadaUnited StatesTotal
Petroleum and natural gas revenues, net of royalties$1,006,831 $522,208 $1,529,039 
Less:
Operating costs, production and mineral taxes257,658 85,344 343,002 
Transportation and blending expense117,950 — 117,950 
Exploration and evaluation15,212 — 15,212 
Depletion and impairment(796,865)(286,608)(1,083,473)
Operating loss1,412,876 723,472 2,136,348 
Income tax expense(548)1,820 1,272 
Results of operations (1)
$1,413,424 $721,652 $2,135,076 

For year ended December 31, 2020
(thousands of Canadian dollars except per boe amounts)
CanadaUnited StatesTotal
Petroleum and natural gas revenues, net of royalties$525,677 $286,065 $811,742 
Less:
Operating costs, production and mineral taxes247,050 84,295 331,345 
Transportation and blending expense76,818 — 76,818 
Exploration and evaluation14,011 — 14,011 
Depletion and impairment2,046,420 792,659 2,839,079 
Operating income (loss)(1,858,622)(590,889)(2,449,511)
Income tax recovery469 105 574 
Results of operations (1)
$(1,859,091)$(590,994)$(2,450,085)
(1)     Excludes corporate overhead and interest costs.

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