< leases

ZETKA, JOSEF

Oil · District 02 · Lease #8141

Operator: UNION OIL COMPANY OF CALIFORNIA

Fields: GANADO, WEST

Cum Oil

200k BBL

Cum Gas

71k MCF

casinghead

Wells

3

Production

1996-02 — 2015-10

Peak Month

1997-01

Production History

Cum Oil: 199,731 BBL Cum Gas: 70,811 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,423 BBL/mo

Di (annual)

15.6%

b-factor

0.0

EUR

186,417 BBL

R-squared

0.847

type

exponential

Operator History (from monthly production reports)

2023-07 — 2026-07 ANGEL OPERATING LLC 37 mo
2021-02 — 2023-06 ALLEGIANT RESOURCES, LLC 29 mo
2016-12 — 2021-01 FROSTWOOD ENERGY, LLC 50 mo
2007-06 — 2016-11 PREMIER NATURAL RESOURCES, LLC 114 mo
2005-01 — 2007-05 PRIEST PETROLEUM CORPORATION 29 mo
2001-09 — 2004-12 PENN VIRGINIA OIL & GAS CORP. 40 mo
1998-11 — 2001-08 SYNERGY OIL & GAS, INC. (A) 34 mo
1996-02 — 1998-10 UNION OIL COMPANY OF CALIFORNIA 33 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-239-00542UNION OIL COMPANY OF CALIFORNIA15,5221996-06-20
342-239-00540UNION OIL COMPANY OF CALIFORNIA14,7551996-03-28
242-239-00541PREMIER NATURAL RESOURCES, LLC24,7681996-02-09