< leases

FOSSIL HILLEGEIST

Oil · District 05 · Lease #3507

Operator: UNITED OIL & MINERALS, INC.

Fields: HILLTOP RESORT (AUSTIN CHALK)

Cum Oil

36k BBL

Cum Gas

362 MCF

casinghead

Wells

1

Production

1995-03 — 2010-02

Peak Month

1995-04

Production History

Cum Oil: 36,433 BBL Cum Gas: 362 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,978 BBL/mo

Di (annual)

331.9%

b-factor

0.4

EUR

41,999 BBL

R-squared

0.750

type

hyperbolic

Operator History (from monthly production reports)

2013-10 — 2015-05 FOSSIL OPERATING, INC. 20 mo
2009-10 — 2013-09 GASTAR EXPLORATION TEXAS, LP 48 mo
2004-04 — 2009-09 PALISADES OPERATING COMPANY 66 mo
2003-03 — 2004-03 CAMBRIAN MANAGEMENT LTD 13 mo
1999-02 — 2003-02 STRATCO OPERATING CO., INC. 49 mo
1995-03 — 1999-01 UNITED OIL & MINERALS, INC. 47 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-289-31219FOSSIL OPERATING INC.16,5001995-02-01