HARRINGTON, A.B.

Oil · District 08 · Lease #29313

Operator: MOBIL PRODUCING TX. & N.M. INC.

Fields: PARKS (SPRABERRY)

Cum Oil

49k BBL

Cum Gas

73k MCF

casinghead

Wells

3

Production

1993-01 — 2009-03

Peak Month

2003-11

Production History

Cum Oil: 48,754 BBL Cum Gas: 72,701 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

804 BBL/mo

Di (annual)

50.8%

b-factor

2.0

EUR

117,724 BBL

R-squared

0.494

type

hyperbolic

Operator History (from monthly production reports)

2009-01 — 2010-01 COG OPERATING LLC 13 mo

2001-04 — 2008-12 HENRY PETROLEUM LP 93 mo

1998-04 — 2001-03 HENRY PETROLEUM CORP. 36 mo

1993-01 — 1998-03 MOBIL PRODUCING TX. & N.M. INC. 63 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
4	42-329-31228	COG OPERATING LLC	2	13,200	2008-02-20
2	42-329-00912	COG OPERATING LLC	2	10,650	2003-04-25
1	42-329-00911	COG OPERATING LLC	1	10,935	2001-08-28