ROSEBROUGH

Oil · District 13 · Lease #27397

Operator: RIDGE OIL COMPANY

Cum Oil

660 BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2002-12

Peak Month

1998-05

Production History

Cum Oil: 660 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

139 BBL/mo

Di (annual)

557.1%

b-factor

0.5

EUR

554 BBL

R-squared

0.789

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RIDGE OIL COMPANY24,9992002-04-11
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