BLACK STONE "A"

Oil · District 3 · Lease #23900

Operator: HENNIG PRODUCTION CO., INC.

Cum Oil

50k BBL

Cum Gas

0 MCF

Wells

1

Production

2000-08 — 2010-03

Peak Month

2001-06

Production History

Cum Oil: 49,928 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,912 BBL/mo

Di (annual)

221.4%

b-factor

0.1

EUR

17,570 BBL

R-squared

0.654

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RHENNIG PRODUCTION CO., INC.313,5002000-05-30
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