UNIVERSITY -T-

Oil · District 08 · Lease #5496

Operator: PHILLIPS PETROLEUM COMPANY

Cum Oil

11k BBL

Cum Gas

4k MCF

casinghead

Wells

5

Production

1993-01 — 1995-01

Peak Month

1993-07

Production History

Cum Oil: 10,532 BBL Cum Gas: 4,296 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

522 BBL/mo

Di (annual)

48.2%

b-factor

0.0

EUR

12,969 BBL

R-squared

0.406

type

exponential

Operator History (from monthly production reports)

1994-05 — 1995-04 HENRY PETROLEUM CORP. 12 mo
1993-01 — 1994-04 PHILLIPS PETROLEUM COMPANY 16 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HIGHMARK ENERGY OPERATING, LLC19,8801995-05-24
142-003-04621HIGHMARK ENERGY OPERATING, LLC------
442-003-04672HIGHMARK ENERGY OPERATING, LLC------
542-003-10739HIGHMARK ENERGY OPERATING, LLC------
642-003-11057HIGHMARK ENERGY OPERATING, LLC------