OCONNOR, THOS.

Oil · District 02 · Lease #3990

Operator: GRETA OPERATING COMPANY LLC

Fields: GRETA (4400)

Cum Oil

147k BBL

Cum Gas

52k MCF

casinghead

Wells

6

Production

1993-01 — 2026-04

Peak Month

2018-12

Production History

Cum Oil: 147,003 BBL Cum Gas: 51,543 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,421 BBL/mo

Di (annual)

19.4%

b-factor

0.0

EUR

87,865 BBL

R-squared

0.819

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 (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2GRETA OPERATING COMPANY LLC46,1002003-08-20
1GRETA OPERATING COMPANY LLC24,3921990-02-06
11GRETA OPERATING COMPANY LLC14,5001981-06-09
8GRETA OPERATING COMPANY LLC14,4501979-08-28
542-391-00975GRETA OPERATING COMPANY LLC------
942-391-30340GRETA OPERATING COMPANY LLC------