CHALK, MARY

Oil · District 10 · Lease #10116

Operator: MARATHON OIL COMPANY

Cum Oil

63k BBL

Cum Gas

0 MCF

Wells

7

Production

1993-01 — 2012-09

Peak Month

1998-03

Production History

Cum Oil: 63,401 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

458 BBL/mo

Di (annual)

7.5%

b-factor

0.0

EUR

71,182 BBL

R-squared

0.436

type

exponential

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12GUTHRIE, A. K. OPERATING CO.11,6111981-10-05
1042-227-10133--------
1142-227-10134--------
342-227-04143--------
442-227-04146--------
542-227-04147--------
742-227-04149--------
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