MARY K. SHIRK

Oil · District 9 · Lease #17939

Operator: OPAL RESOURCES OPERATING CO.,LLC

Cum Oil

51k BBL

Cum Gas

0 MCF

Wells

2

Production

2012-06 — 2026-03

Peak Month

2012-07

Production History

Cum Oil: 50,956 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

817 BBL/mo

Di (annual)

24.3%

b-factor

0.1

EUR

44,660 BBL

R-squared

0.408

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7OPAL RESOURCES OPERATING CO.,LLC213,0002011-09-27
6OPAL RESOURCES OPERATING CO.,LLC213,0002011-07-25
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