BLACKARD "A"

Oil · District 11 · Lease #65621

Operator: MARSHALL & WINSTON, INC.

Cum Oil

155k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2026-03

Peak Month

2004-08

Production History

Cum Oil: 154,966 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

736 BBL/mo

Di (annual)

8.9%

b-factor

0.7

EUR

150,004 BBL

R-squared

0.608

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2MARSHALL & WINSTON, INC.410,0002004-04-23
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