< leases

ZAHN

Oil · District 8A · Lease #65264

Operator: THREE RIVERS OPERATING CO LLC

Fields: ANTON, WEST

Cum Oil

396k BBL

Cum Gas

56 MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

1998-01

Production History

Cum Oil: 396,192 BBL Cum Gas: 56 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,594 BBL/mo

Di (annual)

4.1%

b-factor

0.0

EUR

404,631 BBL

R-squared

0.788

type

exponential

Operator History (from monthly production reports)

2019-12 — 2026-07 OSTRICH OIL & GAS, LLC 80 mo
2013-01 — 2019-11 LEGACY RESERVES OPERATING LP 83 mo
2012-08 — 2012-12 COG OPERATING LLC 5 mo
2010-04 — 2012-07 THREE RIVERS OPERATING CO LLC 28 mo
2004-04 — 2010-03 CHESAPEAKE OPERATING, INC. 72 mo
2004-01 — 2004-03 CONCHO EXPLORATION INC 3 mo
2003-11 — 2003-12 RICKS EXPLORATION, INC. 2 mo
2001-06 — 2003-10 RICKS EXPL ACQUISITION LLC 29 mo
1997-09 — 2001-05 RICKS EXPL ACQUISITION CORP 45 mo
1993-01 — 1997-08 HMH OPERATORS, INC. 56 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
342-279-30289OSTRICH OIL & GAS, LLC16,7501986-07-10
242-279-30280OSTRICH OIL & GAS, LLC16,7501985-10-10
142-279-30277OSTRICH OIL & GAS, LLC16,7501984-11-09