G, T, ALLISON OIL UNIT -B-

Oil · District 06 · Lease #13963

Operator: VASTAR RESOURCES, INC.

Cum Oil

29k BBL

Cum Gas

816k MCF

casinghead

Wells

1

Production

1999-08 — 2006-05

Peak Month

1999-08

Production History

Cum Oil: 29,189 BBL Cum Gas: 816,079 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,840 BBL/mo

Di (annual)

121.2%

b-factor

0.5

EUR

35,309 BBL

R-squared

0.873

type

hyperbolic

Operator History (from monthly production reports)

2002-01 — 2007-01 BP AMERICA PRODUCTION COMPANY 61 mo
1999-08 — 2001-12 VASTAR RESOURCES, INC. 29 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11 UMMGL EAST TEXAS III, LLC211,0001999-07-14