SWAIN, W.F. 9

Oil // district 5 // lease#3792

op: UNION OIL COMPANY OF CALIFORNIA

cum_oil

3k BBL

cum_gas

0 MCF

wells

1

production

2004-10 — 2026-03

peak_month

2008-07

-- production_history

cum_oil: 3,434 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

26 BBL/mo

Di (annual)

5.3%

b-factor

0.0

EUR

5,494 BBL

R-squared

0.333

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6UNION OIL COMPANY OF CALIFORNIA12,9612004-05-14
EOF // data source: Texas Railroad Commission // 2026