DUVAL COUNTY RANCH CO. -T-

Oil // district 4 // lease#5472

op: SAWMILL RESOURCES, LLC

cum_oil

22k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2026-03

peak_month

2010-07

-- production_history

cum_oil: 21,825 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

450 BBL/mo

Di (annual)

531.0%

b-factor

0.9

EUR

4,652 BBL

R-squared

0.859

type

hyperbolic

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
21TANA OIL AND GAS CORPORATION32,3002009-04-23
22GULFTEX ENERGY, LLC11,4002008-09-15
23GULFTEX ENERGY, LLC11,4002008-09-09
142-131-02399--------
1442-131-02404--------
1742-131-02407--------
1E42-131-30810--------
EOF // data source: Texas Railroad Commission // 2026