UNIVERSITY -F-

Oil · District 08 · Lease #5508

Operator: LEGACY RESERVES OPERATING LP

Cum Oil

125k BBL

Cum Gas

47k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

2011-05

Production History

Cum Oil: 125,440 BBL Cum Gas: 46,840 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,470 BBL/mo

Di (annual)

28.3%

b-factor

0.0

EUR

104,754 BBL

R-squared

0.742

type

exponential

Operator History (from monthly production reports)

2023-03 — 2026-07 HIGHMARK ENERGY OPERATING, LLC 41 mo
2013-01 — 2023-02 LEGACY RESERVES OPERATING LP 122 mo
2009-01 — 2012-12 COG OPERATING LLC 48 mo
2001-04 — 2008-12 HENRY PETROLEUM LP 93 mo
2000-07 — 2001-03 HENRY PETROLEUM CORP. 9 mo
2000-03 — 2000-06 3TEC ENERGY CORPORATION 4 mo
1993-01 — 2000-02 FLOYD OPERATING COMPANY 86 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6 LHIGHMARK ENERGY OPERATING, LLC19,7392024-10-02
3 LHIGHMARK ENERGY OPERATING, LLC19,9322000-11-16