OBRIEN, J. J., -B-

Oil · District 02 · Lease #3960

Operator: GRETA OPERATING COMPANY LLC

Fields: GRETA (4400)

Cum Oil

273k BBL

Cum Gas

41k MCF

casinghead

Wells

4

Production

1993-01 — 2024-11

Peak Month

1994-09

Production History

Cum Oil: 272,949 BBL Cum Gas: 40,774 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,884 BBL/mo

Di (annual)

9.0%

b-factor

0.0

EUR

247,579 BBL

R-squared

0.888

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
1993-01 — 2001-07 CHILTON ENERGY 103 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
B 6GRETA OPERATING COMPANY LLC56,5162000-03-22
7GRETA OPERATING COMPANY LLC14,5001980-09-11
442-391-00916GRETA OPERATING COMPANY LLC------
5 D42-391-30227ARCO OIL & GAS CO.------