HAZELTON

Oil · District 09 · Lease #21619

Operator: THUNDERBIRD OPERATING, L.L.C.

Cum Oil

5k BBL

Cum Gas

94k MCF

casinghead

Wells

2

Production

1993-01 — 2013-01

Peak Month

1994-08

Production History

Cum Oil: 4,683 BBL Cum Gas: 93,862 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

181 BBL/mo

Di (annual)

123.9%

b-factor

0.5

EUR

3,238 BBL

R-squared

0.738

type

hyperbolic

Operator History (from monthly production reports)

2011-04 — 2026-07 THUNDERBIRD OPERATING, L.L.C. 184 mo
1995-03 — 2011-03 LYON OPERATING COMPANY INC.(III) 193 mo
1993-05 — 1995-02 CABOT OIL & GAS CORPORATION 22 mo
1993-01 — 1993-04 HARKEN EXPLORATION COMPANY 4 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2THUNDERBIRD OPERATING, L.L.C.24,3601995-10-11
1ATHUNDERBIRD OPERATING, L.L.C.14,3001981-06-11