HEARD, J. F. B.- TEX

Oil · District 02 · Lease #3996

Operator: GRETA OPERATING COMPANY LLC

Fields: GRETA (4400)

Cum Oil

403k BBL

Cum Gas

219k MCF

casinghead

Wells

15

Production

1993-01 — 2026-04

Peak Month

1993-11

Production History

Cum Oil: 402,653 BBL Cum Gas: 219,134 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,200 BBL/mo

Di (annual)

6.9%

b-factor

0.0

EUR

372,656 BBL

R-squared

0.387

type

exponential

Operator History (from monthly production reports)

2020-12 — 2026-07 GRETA OPERATING COMPANY LLC 68 mo
2004-05 — 2020-11 ACOCK/ANAQUA OPERATING CO., LP 199 mo
2002-04 — 2004-04 ACOCK/ANAQUA OPERATING CO., LC 25 mo
2001-08 — 2002-03 ACOCK ENGINEERING & ASSOC., INC. 8 mo
1995-12 — 2001-07 CHILTON ENERGY 68 mo
1993-01 — 1995-11 DEWBRE PETROLEUM CORPORATION 35 mo

Wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9GRETA OPERATING COMPANY LLC14,2602000-03-10
2GRETA OPERATING COMPANY LLC14,2961999-10-12
5AGRETA OPERATING COMPANY LLC14,4161993-06-09
6GRETA OPERATING COMPANY LLC14,4501987-05-28
142-391-00890GRETA OPERATING COMPANY LLC------
1042-391-00899GRETA OPERATING COMPANY LLC------
1242-391-00901GRETA OPERATING COMPANY LLC------
1442-391-00645GRETA OPERATING COMPANY LLC------
1542-391-00646GRETA OPERATING COMPANY LLC------
1642-391-00647GRETA OPERATING COMPANY LLC------
2142-391-30252GRETA OPERATING COMPANY LLC------
342-391-00892GRETA OPERATING COMPANY LLC------
442-391-00893GRETA OPERATING COMPANY LLC------
742-391-00896GRETA OPERATING COMPANY LLC------
842-391-00897GRETA OPERATING COMPANY LLC------