COLEMAN RANCH -C-

Oil · District 08 · Lease #27608

Operator: SWJN OIL COMPANY

Fields: COLEMAN RANCH, N. (CLEAR FORK)

Cum Oil

10k BBL

Cum Gas

20 MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 9,560 BBL Cum Gas: 20 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

89 BBL/mo

Di (annual)

11.7%

b-factor

0.0

EUR

9,056 BBL

R-squared

0.811

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 (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-335-32431	ROYAL ORYX OG LLC	1	3,300	1982-11-30
2	42-335-32301	ROYAL ORYX OG LLC	1	3,300	1982-05-24