BIRD, F. A. -39-

Oil · District 7C · Lease #1574

Operator: ROCK FISH OPERATING LLC

Fields: SPRABERRY (TREND AREA)

Cum Oil

176k BBL

Cum Gas

730k MCF

casinghead

Wells

4

Production

1993-01 — 2024-08

Peak Month

2023-06

Production History

Cum Oil: 176,108 BBL Cum Gas: 729,827 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,650 BBL/mo

Di (annual)

16.6%

b-factor

0.1

EUR

131,630 BBL

R-squared

0.638

type

hyperbolic

Operator History (from monthly production reports)

2026-04 — 2026-07 ROCK FISH OPERATING LLC 4 mo

2022-10 — 2026-03 FLAT TOP OPERATING, LLC 42 mo

2021-03 — 2022-09 HEXP OPERATING, LLC 19 mo

2020-06 — 2021-02 BAM PERMIAN OPERATING, LLC 9 mo

2016-03 — 2020-05 PARSLEY ENERGY OPERATIONS, LLC 51 mo

2006-04 — 2016-02 LEGACY RESERVES OPERATING LP 119 mo

2005-07 — 2006-03 BROTHERS PRODUCTION COMPANY INC. 9 mo

2001-06 — 2005-06 PITCO INVESTMENTS, LTD. 49 mo

1997-01 — 2001-05 PROSPCTV INVSTMNT & TRDG CO, LTD 53 mo

1993-01 — 1996-12 AMERICAN EXPLORATION COMPANY 48 mo

Wells (4)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4	42-383-35834	ROCK FISH OPERATING LLC	1	9,500	2006-08-31
3	42-383-35816	ROCK FISH OPERATING LLC	1	9,500	2006-08-08
239	42-383-33152	ROCK FISH OPERATING LLC	1	8,300	1984-08-07
139	42-383-01048	ROCK FISH OPERATING LLC	--	--	--

BIRD, F. A. -39-

Production HistoryBeta Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]

Decline Curve Analysis

Operator History (from monthly production reports)

Wells (4)

Production History