SPRAGUE -A-

Oil · District 10 · Lease #41312

Operator: ARCH OIL & GAS, LLC

Cum Oil

733 BBL

Cum Gas

0 MCF

Wells

6

Production

2011-12 — 2026-03

Peak Month

2018-03

Production History

Cum Oil: 733 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

34 BBL/mo

Di (annual)

116.6%

b-factor

0.0

EUR

338 BBL

R-squared

0.879

type

exponential

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13HRUBETZ OIL COMPANY12,1001985-02-26
10WHRUBETZ OIL COMPANY12,1001985-01-21
9WHRUBETZ OPERATING COMPANY12,1001985-01-21
142-173-10336--------
5W42-173-10357--------
742-227-10883--------
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