GRANBERRY

Oil · District 03 · Lease #23252

Operator: WESTPORT OIL AND GAS COMPANY, LP

Cum Oil

143k BBL

Cum Gas

184k MCF

casinghead

Wells

1

Production

1997-04 — 2007-01

Peak Month

1997-05

Production History

Cum Oil: 143,403 BBL Cum Gas: 184,194 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,739 BBL/mo

Di (annual)

50.8%

b-factor

0.2

EUR

139,793 BBL

R-squared

0.472

type

hyperbolic

Operator History (from monthly production reports)

2005-12 — 2008-08 CHAPARRAL ENERGY, L.L.C. 33 mo
2004-01 — 2005-11 WESTPORT OIL AND GAS COMPANY, LP 23 mo
2003-07 — 2003-12 UNITED RESOURCES, LP 6 mo
2001-02 — 2003-06 UNITED OIL & MINERALS L. P. 29 mo
1997-04 — 2001-01 UNITED OIL & MINERALS, INC. 46 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1CHAPARRAL ENERGY L.L.C.49,0002009-12-11