KARNES

Oil · District 14 · Lease #7954

Operator: CHESAPEAKE OPERATING, INC.

Cum Oil

60k BBL

Cum Gas

0 MCF

Wells

1

Production

2008-08 — 2009-12

Peak Month

2008-09

Production History

Cum Oil: 59,627 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

12,018 BBL/mo

Di (annual)

324.2%

b-factor

0.4

EUR

74,134 BBL

R-squared

0.977

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4431HCHESAPEAKE OPERATING, INC.112,0002008-05-28
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