MARATHON UNIVERSITY -4-

Oil · District 08 · Lease #35079

Operator: VIN FISHER OPERATING, INC.

Cum Oil

38k BBL

Cum Gas

91k MCF

casinghead

Wells

2

Production

1996-09 — 2026-04

Peak Month

1997-06

Production History

Cum Oil: 38,454 BBL Cum Gas: 91,163 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

586 BBL/mo

Di (annual)

82.4%

b-factor

1.1

EUR

35,611 BBL

R-squared

0.703

type

hyperbolic

Operator History (from monthly production reports)

2024-02 — 2026-07 VIN FISHER OPERATING, INC. 30 mo
2023-09 — 2024-01 HARVEST PETROLEUM INC. 5 mo
2017-12 — 2023-08 MERCURY OPERATING, LLC 69 mo
2008-06 — 2017-11 VIN FISHER OPERATING, INC. 114 mo
2008-05 — 2008-05 VIN FISHER OIL COMPANY 1 mo
2004-06 — 2008-04 HCM 47 mo
1999-02 — 2004-05 PARISH, JOHN R. 64 mo
1996-09 — 1999-01 AUSLAND PRODUCTION COMPANY 29 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2VIN FISHER OPERATING, INC.14,8001997-01-24
1VIN FISHER OPERATING, INC.15,0001994-07-05