KEYSTONE "A"

Oil · District 1 · Lease #13872

Operator: PENROD OIL COMPANY OF TEXAS, INC

Cum Oil

16k BBL

Cum Gas

0 MCF

Wells

4

Production

1994-06 — 1999-01

Peak Month

1997-11

Production History

Cum Oil: 15,935 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

757 BBL/mo

Di (annual)

97.5%

b-factor

0.2

EUR

11,600 BBL

R-squared

0.633

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5FAIR ENERGY16,9001978-10-03
4FAIR ENERGY26,9001978-06-20
3AFAIR ENERGY16,9501977-10-31
1FAIR OIL, LTD.16,8001977-07-08
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