UNIVERSITY -11-

Oil · District 08 · Lease #32501

Operator: STEPHENS & JOHNSON OPERATING CO.

Cum Oil

170k BBL

Cum Gas

147k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

2006-01

Production History

Cum Oil: 170,439 BBL Cum Gas: 146,648 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,034 BBL/mo

Di (annual)

21.4%

b-factor

0.9

EUR

133,807 BBL

R-squared

0.830

type

hyperbolic

Operator History (from monthly production reports)

2004-03 — 2026-07 STEPHENS & JOHNSON OPERATING CO. 269 mo
2001-04 — 2004-02 ICA ENERGY OPERATING, L.L.C. 35 mo
2000-03 — 2001-03 3TEC ENERGY CORPORATION 13 mo
1995-02 — 2000-02 FLOYD OPERATING COMPANY 61 mo
1993-01 — 1995-01 CONOCO INC. 25 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2STEPHENS & JOHNSON OPERATING CO.17,5002005-04-28
1STEPHENS & JOHNSON OPERATING CO.37,0501989-12-12