UNIVERSITY 173

Oil · District 08 · Lease #19459

Operator: LEGACY RESERVES OPERATING LP

Cum Oil

299k BBL

Cum Gas

152k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

2010-10

Production History

Cum Oil: 298,858 BBL Cum Gas: 152,421 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,497 BBL/mo

Di (annual)

40.6%

b-factor

1.2

EUR

158,111 BBL

R-squared

0.584

type

hyperbolic

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
1993-01 — 2001-03 HENRY PETROLEUM CORP. 99 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10HIGHMARK ENERGY OPERATING, LLC17,1082001-08-09
19HIGHMARK ENERGY OPERATING, LLC17,4001993-03-02
942-003-10378HIGHMARK ENERGY OPERATING, LLC------