GARY

Oil · District 14 · Lease #8129

Operator: CHESAPEAKE OPERATING, INC.

Cum Oil

78k BBL

Cum Gas

0 MCF

Wells

1

Production

2009-12 — 2013-05

Peak Month

2010-04

Production History

Cum Oil: 78,124 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

9,543 BBL/mo

Di (annual)

154.5%

b-factor

0.0

EUR

74,229 BBL

R-squared

0.916

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2831HCHESAPEAKE OPERATING, INC.118,0002009-10-22
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