ZUBER UNIT

Oil // district 13 // lease#31300

op: UPHAM OIL & GAS COMPANY

cum_oil

21k BBL

cum_gas

0 MCF

wells

1

production

2009-05 — 2026-03

peak_month

2009-06

-- production_history

cum_oil: 20,871 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,036 BBL/mo

Di (annual)

550.8%

b-factor

1.3

EUR

21,755 BBL

R-squared

0.839

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2UPHAM OIL & GAS COMPANY16,5002008-10-22
EOF // data source: Texas Railroad Commission // 2026