EXHIBIT 99.2
PIONEER NATURAL RESOURCES COMPANY
UNAUDITED SUPPLEMENTAL INFORMATION
Year Ended December 31, 2004
United
States Argentina Canada Africa Total
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Proved reserves:
Oil (MBbls):
Balance, January 1, 2004 215,303 24,467 53 24,154 263,977
Revisions of previous estimates (1,504) (1,150) 1,728 (12,111) (13,037)
Purchases of minerals-in-place 10,019 - 823 - 10,842
Discoveries and extensions 1,004 4,680 462 502 6,648
Production (9,749) (3,123) (50) (4,274) (17,196)
Sales of minerals-in-place (11) - - - (11)
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Balance, December 31, 2004 215,062 24,874 3,016 8,271 251,223
Natural Gas Liquids (MBbls):
Balance, January 1, 2004 147,448 9,002 2,354 - 158,804
Revisions of previous estimates 6,175 (1,890) (1,017) - 3,268
Purchases of minerals-in-place 1,784 - - - 1,784
Discoveries and extensions 13 1,748 79 - 1,840
Production (7,225) (566) (336) - (8,127)
Sales of minerals-in-place - - - - -
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Balance, December 31, 2004 148,195 8,294 1,080 - 157,569
Natural Gas (MMcf):
Balance, January 1, 2004 1,553,976 549,856 93,829 - 2,197,661
Revisions of previous estimates 25,764 (61,483) 8,570 - (27,149)
Purchases of minerals-in-place 1,571,053 - 22,127 - 1,593,180
Discoveries and extensions 56,690 116,526 10,656 - 183,872
Production (200,598) (44,525) (15,323) - (260,446)
Sales of minerals-in-place (6,550) - - - (6,550)
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Balance, December 31, 2004 3,000,335 560,374 119,859 - 3,680,568
Equivalent Barrels (MBOE):
Balance, January 1, 2004 621,747 125,112 18,045 24,154 789,058
Revisions of previous estimates 8,965 (13,287) 2,140 (12,111) (14,293)
Purchases of minerals-in-place 273,646 - 4,511 - 278,157
Discoveries and extensions 10,465 25,849 2,317 502 39,133
Production (50,407) (11,110) (2,940) (4,274) (68,731)
Sales of minerals-in-place (1,103) - - - (1,103)
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Balance, December 31, 2004 863,313 126,564 24,073 8,271 1,022,221
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Costs incurred for oil and gas producing
activities ($000):
Property acquisition costs:
Proved $2,213,879 $ - $ 46,988 $ - $ 2,260,867
Unproved 301,856 - 20,921 18,238 341,015
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2,515,735 - 67,909 18,238 2,601,882
Exploration costs 127,338 49,745 33,406 32,932 243,421
Development costs 229,636 49,937 13,036 21,178 313,787
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2,872,709 99,682 114,351 72,348 3,159,090
Asset retirement obligations 3,476 2,770 6,275 2,558 15,079
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Total costs incurred $2,876,185 $ 102,452 $ 120,626 $ 74,906 $ 3,174,169
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Reserve replacement percentage (a) 581% 113% 305% - 441%
========= ========= ======== ======== ==========
Finding and development costs per BOE
of proved reserves added (b) $ 9.81 $ 8.16 $ 13.45 $ - $ 10.48
========= ========= ======== ======== ==========
<FN>
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(a) The summation of annual proved reserves, on a BOE basis, attributable to
revisions of previous estimates, purchases of minerals-in-place and
discoveries and extensions divided by annual production of oil, NGLs and
gas, on a BOE basis.
(b) Total costs incurred divided by the summation of annual proved reserves, on
a BOE basis, attributable to revisions of previous estimates, purchases of
minerals-in-place and discoveries and extensions. Consistent with industry
practice, future capital costs to develop proved undeveloped reserves are
not included in costs incurred.
</FN>