SPRAGUE -A-

Oil // district 10 // lease#41312

op: 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--------
EOF // multi-state drilling data platform // 2026