TREES ESTATE "12"

Oil · District 08 · Lease #36000

Operator: UNION OIL COMPANY OF CALIFORNIA

Fields: WAHA (DELAWARE)

Cum Oil

90k BBL

Cum Gas

604k MCF

casinghead

Wells

3

Production

1998-10 — 2018-07

Peak Month

1999-11

Production History

Cum Oil: 90,185 BBL Cum Gas: 603,566 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,569 BBL/mo

Di (annual)

23.7%

b-factor

0.0

EUR

79,363 BBL

R-squared

0.623

type

exponential

Operator History (from monthly production reports)

2015-09 — 2021-07 MECO IV, LLC 71 mo

2012-10 — 2015-08 SHELL WESTERN E&P 35 mo

2008-01 — 2012-09 CHESAPEAKE OPERATING, INC. 57 mo

2006-04 — 2007-12 CHEVRON MIDCONTINENT, L.P. 21 mo

2000-06 — 2006-03 PURE RESOURCES, L.P. 70 mo

1998-10 — 2000-05 UNION OIL COMPANY OF CALIFORNIA 20 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
3	42-371-36941	MECO IV LLC	1	5,200	1999-09-20
2	42-371-36908	MECO IV LLC	2	6,400	1999-04-09
1	42-371-36829	MECO IV LLC	2	8,200	1998-04-17