BARTON

Oil // district 3 // lease#19702

op: UNION PACIFIC AUSTIN CHALK CO.

cum_oil

4k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2025-10

peak_month

1993-01

-- production_history

cum_oil: 4,121 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

144 BBL/mo

Di (annual)

19.3%

b-factor

0.0

EUR

8,864 BBL

R-squared

0.381

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SANTA FE MINERALS, INC.211,8001986-02-24
EOF // data source: Texas Railroad Commission // 2026