CHADBOURNE RANCH 431 -A-

Oil · District 7C · Lease #13773

Operator: WESTPORT OIL AND GAS COMPANY, LP

Fields: CONDA (FLIPPEN)

Cum Oil

75k BBL

Cum Gas

0 MCF

Wells

1

Production

1995-04 — 2026-04

Peak Month

1995-05

Production History

Cum Oil: 74,617 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

353 BBL/mo

Di (annual)

4.5%

b-factor

0.0

EUR

83,718 BBL

R-squared

0.590

type

exponential

Operator History (from monthly production reports)

2012-05 — 2026-07 P.O.&G. OPERATING, LLC 171 mo

2007-10 — 2012-04 MCDANIEL COMPANY, INC., THE 55 mo

2006-03 — 2007-09 KERR-MCGEE OIL & GAS ONSHORE LP 19 mo

2002-03 — 2006-02 WESTPORT OIL AND GAS COMPANY, LP 48 mo

1998-09 — 2002-02 BELCO ENERGY CORP. 42 mo

1995-04 — 1998-08 CODA ENERGY, INC. 41 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
14	42-081-31635	P.O.&G. OPERATING, LLC	2	6,000	1994-06-15