COWDEN RANCH -7-

Oil · District 08 · Lease #30181

Operator: RUST OIL CORP.

Cum Oil

398k BBL

Cum Gas

542k MCF

casinghead

Wells

8

Production

1993-01 — 2026-04

Peak Month

1995-01

Production History

Cum Oil: 397,540 BBL Cum Gas: 541,677 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,243 BBL/mo

Di (annual)

10.8%

b-factor

0.0

EUR

357,662 BBL

R-squared

0.955

type

exponential

Operator History (from monthly production reports)

1993-01 — 2026-07 RUST OIL CORP. 403 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RUST OIL CORP.29,5002025-08-29
8RUST OIL CORP.19,0001988-07-05
7RUST OIL CORP.19,0001988-02-05
6RUST OIL CORP.19,0001987-09-16
5RUST OIL CORP.29,0001987-04-14
4RUST OIL CORP.29,0001986-12-09
3RUST OIL CORP.18,9291986-07-28
2RUST OIL CORP.29,5001986-02-11