COLLIER, GAYLAN JANE 519

Oil · District 8A · Lease #67453

Operator: GREAT WESTERN ONSHORE INC.

Cum Oil

7k BBL

Cum Gas

2k MCF

casinghead

Wells

1

Production

1995-09 — 1996-05

Peak Month

1995-10

Production History

Cum Oil: 6,510 BBL Cum Gas: 1,674 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,729 BBL/mo

Di (annual)

582.0%

b-factor

0.2

EUR

4,515 BBL

R-squared

0.938

type

hyperbolic

Operator History (from monthly production reports)

1995-09 — 2008-03 GREAT WESTERN ONSHORE INC. 151 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1O BENCO INC.38,3502013-12-11