CERF-A

Oil · District 05 · Lease #3856

Operator: THURSTON TEXAS OPERATING CO LLC

Cum Oil

63k BBL

Cum Gas

23k MCF

casinghead

Wells

19

Production

2007-09 — 2026-03

Peak Month

2008-01

Production History

Cum Oil: 63,063 BBL Cum Gas: 22,599 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,288 BBL/mo

Di (annual)

35.9%

b-factor

0.3

EUR

60,671 BBL

R-squared

0.643

type

hyperbolic

Operator History (from monthly production reports)

2024-10 — 2026-07 KO OPERATING LLC 22 mo
2016-08 — 2024-09 ISKANDIA ENERGY OPERATING, INC. 98 mo
2013-01 — 2016-07 THURSTON TEXAS OPERATING CO LLC 43 mo
2008-04 — 2012-12 ACTIVA RESOURCES, LLC 57 mo
2007-09 — 2008-03 ACTIVA RESOURCES, LTD. 7 mo

Wells (19)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13KO OPERATING LLC33,5002015-11-09
14KO OPERATING LLC23,4002015-11-05
15KO OPERATING LLC23,4002015-11-05
16KO OPERATING LLC33,4002015-11-05
12KO OPERATING LLC13,0002008-07-02
6KO OPERATING LLC13,0002008-07-02
11KO OPERATING LLC13,0002007-06-15
5KO OPERATING LLC13,0002007-06-15
10KO OPERATING LLC23,0002007-05-15
2KO OPERATING LLC23,0002007-05-15
9KO OPERATING LLC12,5002000-08-30
8KO OPERATING LLC22,5002000-08-28
7KO OPERATING LLC11,3001986-08-13
5AKO OPERATING LLC12,5001984-11-29
4KO OPERATING LLC12,5001984-05-09
2AKO OPERATING LLC12,2001982-09-03
3KO OPERATING LLC12,0001982-09-03
1KO OPERATING LLC12,2001982-08-13
6AKO OPERATING LLC11,2081981-02-12