< leases

WIGHT -A-19-

Oil · District 08 · Lease #25690

Operator: WALSH & WATTS, INC.

Fields: COWDEN, NORTH

Cum Oil

134k BBL

Cum Gas

1.0M MCF

casinghead

Wells

3

Production

1993-01 — 2019-07

Peak Month

1993-03

Production History

Cum Oil: 133,966 BBL Cum Gas: 1,006,815 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,510 BBL/mo

Di (annual)

16.3%

b-factor

0.2

EUR

136,312 BBL

R-squared

0.935

type

hyperbolic

Operator History (from monthly production reports)

2025-12 — 2026-07 UNITED OIL & SHALE LLC 8 mo
2021-08 — 2025-11 WALSH & WATTS, INC. 52 mo
2018-03 — 2021-07 MAMMOTH EXPLORATION LLC 41 mo
2012-12 — 2018-02 SABER OIL & GAS VENTURES, LLC 63 mo
2000-04 — 2012-11 HUNTINGTON ENERGY, L.L.C. 152 mo
1993-01 — 2000-03 CONOCO INC. 87 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
342-135-33339UNITED OIL & SHALE LLC14,4501980-03-04
242-135-33294UNITED OIL & SHALE LLC14,4501980-01-16
142-135-33282UNITED OIL & SHALE LLC14,4501979-12-07