UNIVERSITY 15 "B"

Oil · District 08 · Lease #25587

Operator: STEPHENS & JOHNSON OPERATING CO.

Fields: FULLERTON

Cum Oil

134k BBL

Cum Gas

152k MCF

casinghead

Wells

5

Production

1993-01 — 2026-04

Peak Month

2012-07

Production History

Cum Oil: 134,340 BBL Cum Gas: 151,738 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

941 BBL/mo

Di (annual)

34.5%

b-factor

2.0

EUR

162,272 BBL

R-squared

0.556

type

hyperbolic

Operator History (from monthly production reports)

2008-06 — 2026-07 STEPHENS & JOHNSON OPERATING CO. 218 mo
2000-03 — 2008-05 FOSSIL ROCK RESOURCES, INC. 99 mo
1999-10 — 2000-02 RUST OPERATING CO., INC. 5 mo
1998-09 — 1999-09 RUST OIL CORP. 13 mo
1993-01 — 1998-08 LIMARK CORPORATION 68 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6STEPHENS & JOHNSON OPERATING CO.17,5002016-08-24
5STEPHENS & JOHNSON OPERATING CO.17,5002011-12-22
3STEPHENS & JOHNSON OPERATING CO.17,5001980-07-14
2STEPHENS & JOHNSON OPERATING CO.17,5001979-07-06
1STEPHENS & JOHNSON OPERATING CO.17,5001979-05-25