UNIVERSITY -Y-

Oil · District 7C · Lease #465

Operator: MARATHON OIL COMPANY

Cum Oil

97k BBL

Cum Gas

461k MCF

casinghead

Wells

10

Production

1993-01 — 2026-04

Peak Month

1993-03

Production History

Cum Oil: 97,379 BBL Cum Gas: 461,400 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

385 BBL/mo

Di (annual)

9.7%

b-factor

0.0

EUR

47,245 BBL

R-squared

0.555

type

exponential

Operator History (from monthly production reports)

2021-02 — 2026-07 EXTEX OPERATING COMPANY 66 mo
2006-04 — 2021-01 LEGACY RESERVES OPERATING LP 178 mo
1999-11 — 2006-03 BROTHERS PRODUCTION COMPANY INC. 77 mo
1993-01 — 1999-10 MARATHON OIL COMPANY 82 mo

Wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10EXTEX OPERATING COMPANY13,0002010-02-18
9EXTEX OPERATING COMPANY13,0002010-02-05
5EXTEX OPERATING COMPANY12,7501987-07-16
6EXTEX OPERATING COMPANY12,7501987-07-16
7EXTEX OPERATING COMPANY12,7501987-07-16
8EXTEX OPERATING COMPANY12,7501987-07-16
142-105-02327EXTEX OPERATING COMPANY------
242-105-02336EXTEX OPERATING COMPANY------
342-105-02346EXTEX OPERATING COMPANY------
442-105-02355EXTEX OPERATING COMPANY------