GFELLER "A"

Oil // district 13 // lease#28987

op: MADISON OIL COMPANY

cum_oil

40k BBL

cum_gas

0 MCF

wells

1

production

1995-06 — 2008-03

peak_month

1997-03

-- production_history

cum_oil: 40,295 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,756 BBL/mo

Di (annual)

84.0%

b-factor

0.0

EUR

25,073 BBL

R-squared

0.947

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2MADISON OIL COMPANY15,0001995-03-07
EOF // multi-state drilling data platform // 2026