UNIVERSITY -141-

Oil · District 08 · Lease #17918

Operator: LEGACY RESERVES OPERATING LP

Cum Oil

87k BBL

Cum Gas

27k MCF

casinghead

Wells

2

Production

1993-01 — 2021-05

Peak Month

2010-08

Production History

Cum Oil: 87,361 BBL Cum Gas: 27,225 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,436 BBL/mo

Di (annual)

48.3%

b-factor

0.4

EUR

57,719 BBL

R-squared

0.755

type

hyperbolic

Operator History (from monthly production reports)

2023-03 — 2025-04 HIGHMARK ENERGY OPERATING, LLC 26 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 (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1LEGACY RESERVES OPERATING LP29,9802002-08-19
242-003-05344HIGHMARK ENERGY OPERATING LLC------