UNIVERSITY -O-

Oil · District 7C · Lease #9747

Operator: MARATHON OIL COMPANY

Cum Oil

165k BBL

Cum Gas

583k MCF

casinghead

Wells

15

Production

1993-01 — 2026-04

Peak Month

2005-03

Production History

Cum Oil: 165,489 BBL Cum Gas: 583,103 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

806 BBL/mo

Di (annual)

9.2%

b-factor

0.0

EUR

103,821 BBL

R-squared

0.467

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 (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
16EXTEX OPERATING COMPANY12,7501985-11-01
13EXTEX OPERATING COMPANY12,7001985-10-04
14EXTEX OPERATING COMPANY12,7001985-10-04
15EXTEX OPERATING COMPANY12,7001985-10-04
11EXTEX OPERATING COMPANY12,7001985-09-16
12EXTEX OPERATING COMPANY12,7001985-09-16
10EXTEX OPERATING COMPANY12,7101985-08-02
9EXTEX OPERATING COMPANY12,7001984-10-29
6EXTEX OPERATING COMPANY12,7001981-10-15
7EXTEX OPERATING COMPANY12,7001981-10-15
8EXTEX OPERATING COMPANY12,7001981-10-15
5EXTEX OPERATING COMPANY12,6001980-10-21
1EXTEX OPERATING COMPANY12,4801978-11-06
342-105-02342EXTEX OPERATING COMPANY------
442-105-02351EXTEX OPERATING COMPANY------