SPRAGUE -A-

Oil // district 10 // lease#20493

op: UHC PETROLEUM CORPORATION

cum_oil

4k BBL

cum_gas

0 MCF

wells

10

production

1993-01 — 2012-03

peak_month

1998-05

-- production_history

cum_oil: 3,746 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

109 BBL/mo

Di (annual)

43.4%

b-factor

0.0

EUR

2,995 BBL

R-squared

0.396

type

exponential

-- wells (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
13HRUBETZ OIL COMPANY12,1001985-02-26
10WHRUBETZ OIL COMPANY12,1001985-01-21
9WHRUBETZ OPERATING COMPANY12,1001985-01-21
142-173-10336--------
1W42-173-10336--------
242-173-10337--------
342-173-10356--------
5W42-173-10357--------
642-227-10882--------
742-227-10883--------
EOF // multi-state drilling data platform // 2026