BLOCK 31 UNIT

Oil // district 10 // lease#21639

op: OXY USA INC.

cum_oil

10k BBL

cum_gas

0 MCF

wells

8

production

1993-01 — 2026-03

peak_month

1996-06

-- production_history

cum_oil: 10,188 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

391 BBL/mo

Di (annual)

20.6%

b-factor

0.0

EUR

22,759 BBL

R-squared

0.752

type

exponential

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
P 10 UOXY USA INC.19,0812019-08-26
P 14 UOXY USA INC.29,1002019-07-30
A 7AUOXY USA INC.19,0502019-04-05
T 4NUOXY USA INC.49,1002013-03-12
A 6SBP AMERICA PRODUCTION COMPANY29,0802004-08-18
E 9ARCO OIL & GAS CO.29,2501989-09-13
C 4 UATLANTIC RICHFIELD CO.19,0001977-06-13
S 4 U42-103-05286--------
EOF // data source: Texas Railroad Commission // 2026