RUSSELL UNIT

Oil · District 03 · Lease #13865

Operator: TEXAS ONSHORE ENERGY, INC.

Cum Oil

102k BBL

Cum Gas

254k MCF

casinghead

Wells

1

Production

1993-01 — 2025-03

Peak Month

1998-10

Production History

Cum Oil: 102,198 BBL Cum Gas: 254,419 MCF

RRC production reported through Apr 2026 · recent months incomplete

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

Operator History (from monthly production reports)

2017-12 — 2026-07 PROLINE ENERGY RESOURCES INC 104 mo
2007-11 — 2017-11 TEXAS ONSHORE ENERGY, INC. 121 mo
1998-07 — 2007-10 GOLDRUS PRODUCING COMPANY 112 mo
1993-01 — 1998-06 TEXAS ONSHORE ENERGY, INC. 66 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PROLINE ENERGY RESOURCES INC27,7671998-07-30