SCHWARTZ

Oil · District 08 · Lease #35237

Operator: MANHATTAN PETROLEUM, INC.

Cum Oil

69k BBL

Cum Gas

821k MCF

casinghead

Wells

1

Production

1997-02 — 2007-05

Peak Month

1998-07

Production History

Cum Oil: 69,325 BBL Cum Gas: 820,588 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,250 BBL/mo

Di (annual)

78.7%

b-factor

0.3

EUR

70,587 BBL

R-squared

0.946

type

hyperbolic

Operator History (from monthly production reports)

2009-03 — 2009-09 ELEMENT PETROLEUM OPERATING, LLC 7 mo
2008-06 — 2009-02 MANHATTAN PETROLEUM, INC. 9 mo
2006-04 — 2008-05 CHEVRON MIDCONTINENT, L.P. 26 mo
2002-01 — 2006-03 HEC PETROLEUM, INC. 51 mo
1997-02 — 2001-12 HALLWOOD PETROLEUM, INC. 59 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1APACHE CORPORATION310,5002008-07-22