UNIVERSITY -S-

Oil · District 7C · Lease #463

Operator: MARATHON OIL COMPANY

Cum Oil

239k BBL

Cum Gas

313k MCF

casinghead

Wells

14

Production

1993-01 — 2026-04

Peak Month

2000-12

Production History

Cum Oil: 239,330 BBL Cum Gas: 312,889 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,475 BBL/mo

Di (annual)

13.2%

b-factor

0.0

EUR

134,123 BBL

R-squared

0.679

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 (14)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12EXTEX OPERATING COMPANY12,5001995-12-04
10EXTEX OPERATING COMPANY12,5001995-11-09
11EXTEX OPERATING COMPANY12,5001995-11-09
13EXTEX OPERATING COMPANY12,5001995-11-09
14EXTEX OPERATING COMPANY12,5001995-11-09
9EXTEX OPERATING COMPANY12,7001992-09-21
7EXTEX OPERATING COMPANY12,7501987-07-16
8EXTEX OPERATING COMPANY12,7501987-07-16
6EXTEX OPERATING COMPANY12,7501987-05-28
5EXTEX OPERATING COMPANY12,7501986-10-15
142-105-02325EXTEX OPERATING COMPANY------
242-105-02334EXTEX OPERATING COMPANY------
342-105-02344EXTEX OPERATING COMPANY------
442-105-02353EXTEX OPERATING COMPANY------