MAHAFFEY ESTATE -A-

Oil · District 10 · Lease #25491

Operator: RANGE PRODUCTION COMPANY

Fields: DECK (CISCO)

Cum Oil

4k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2016-09

Peak Month

1997-12

Production History

Cum Oil: 3,658 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

33 BBL/mo

Di (annual)

26.9%

b-factor

0.3

EUR

1,948 BBL

R-squared

0.336

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1GRAND BANKS ENERGY COMPANY18,4001979-05-01
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