RUSSELL UNIT

Oil // district 3 // lease#13865

op: TEXAS ONSHORE ENERGY, INC.

cum_oil

102k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2026-03

peak_month

1998-10

-- production_history

cum_oil: 102,198 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,523 BBL/mo

Di (annual)

38.0%

b-factor

0.2

EUR

99,287 BBL

R-squared

0.710

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1GOLDRUS PRODUCING COMPANY27,7671998-07-30
EOF // data source: Texas Railroad Commission // 2026