COLEMAN RANCH -B-

Oil · District 08 · Lease #28025

Operator: SWJN OIL COMPANY

Fields: COLEMAN RANCH, N. (CLEAR FORK)

Cum Oil

68k BBL

Cum Gas

21 MCF

casinghead

Wells

6

Production

1993-01 — 2026-04

Peak Month

1994-03

Production History

Cum Oil: 67,558 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

414 BBL/mo

Di (annual)

8.6%

b-factor

0.0

EUR

56,965 BBL

R-squared

0.859

type

exponential

Operator History (from monthly production reports)

2025-11 — 2026-07 ROYAL ORYX OG LLC 9 mo

2024-04 — 2025-10 ONE NICKEL OPERATING LLC 19 mo

2013-07 — 2024-03 SWJN OIL COMPANY 129 mo

2012-03 — 2013-06 MARTINEAU PETROLEUM, INC. 16 mo

2008-02 — 2012-02 NRPC OPERATING, LLC 49 mo

2006-04 — 2008-01 MIDLAND OPERATING, INC. 22 mo

1998-11 — 2006-03 CHAMBERS OPERATING, INC. 89 mo

1993-01 — 1998-10 RICHMOND DRILLING COMPANY 70 mo

Wells (6)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
6	42-335-33309	ROYAL ORYX OG LLC	1	3,500	1987-02-26
5	42-335-32862	ROYAL ORYX OG LLC	1	3,500	1984-11-06
4	42-335-32812	ROYAL ORYX OG LLC	1	3,500	1984-08-06
3	42-335-32653	ROYAL ORYX OG LLC	1	3,400	1983-12-09
2	42-335-32581	ROYAL ORYX OG LLC	1	3,270	1983-05-27
1	42-335-32486	ROYAL ORYX OG LLC	1	3,300	1983-02-23