SPRAGUE "B"

Oil // district 10 // lease#23667

op: UHC PETROLEUM CORPORATION

cum_oil

5k BBL

cum_gas

0 MCF

wells

4

production

1993-01 — 2012-03

peak_month

1998-05

-- production_history

cum_oil: 5,109 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

190 BBL/mo

Di (annual)

71.5%

b-factor

0.1

EUR

3,504 BBL

R-squared

0.738

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HRUBETZ OPERATING COMPANY12,7051985-05-22
2WHRUBETZ OPERATING COMPANY12,7051985-05-22
142-227-30789--------
342-173-30315--------
EOF // multi-state drilling data platform // 2026