O'BRIEN, J.J.

Gas · District 02 · Lease #135473

Operator: EMERALD OIL & GAS LC

Fields: REFUGIO OLD

Cum Oil

0 BBL

Cum Gas

645k MCF

Wells

1

Production

1993-01 — 2014-10

Peak Month

1997-11

Production History

Cum Oil: 0 BBL Cum Gas: 645,479 MCF

RRC production reported through Apr 2026 · recent months incomplete

Operator History (from monthly production reports)

2016-02 — 2026-07 EAGLEFORD OPERATING, INC. 126 mo

1997-02 — 2016-01 EMERALD OIL & GAS LC 228 mo

1996-10 — 1997-01 COMPRESSION - TRANS CARRIERS INC 4 mo

1993-10 — 1996-09 CARDINAL OPERATING CORPORATION 36 mo

1993-01 — 1993-09 DYNAMIC PETROLEUM RES., INC. 9 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
A 1	42-391-01988	EMERALD OIL & GAS LC	1	6,000	1977-10-31