APPLING, W.A. -A-

Oil · District 01 · Lease #5356

Operator: WINDMILL OIL COMPANY

Fields: SPILLER

Cum Oil

18k BBL

Cum Gas

10k MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

1993-03

Production History

Cum Oil: 18,230 BBL Cum Gas: 9,742 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

67 BBL/mo

Di (annual)

5.3%

b-factor

0.0

EUR

14,013 BBL

R-squared

0.410

type

exponential

Operator History (from monthly production reports)

2007-05 — 2026-07 TRI-W OIL 231 mo

2006-11 — 2007-04 TRI-W OIL, INC. 6 mo

2006-09 — 2006-10 PRONTO SERVICES 2 mo

1999-06 — 2006-08 WINDMILL OIL COMPANY 87 mo

1998-01 — 1999-05 CADDELL WELL SERVICE, INC. 17 mo

1993-11 — 1997-12 SPILLER, J.A. 50 mo

1993-01 — 1993-10 SPILLER, JOSEPH A. 10 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
3A	42-187-30570	TRI-W OIL	1	2,250	1977-07-18
1A	42-187-30580	TRI-W OIL	--	--	--
2A	42-187-30581	TRI-W OIL	--	--	--