YORK, W. A. 13

Oil // district 5 // lease#3805

op: UNION OIL COMPANY OF CALIFORNIA

fields: VAN (SHALLOW)

cum_oil

24k BBL

cum_gas

0 MCF

wells

2

production

2005-04 — 2019-04

peak_month

2005-04

-- production_history

cum_oil: 24,321 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

599 BBL/mo

Di (annual)

33.6%

b-factor

0.1

EUR

23,691 BBL

R-squared

0.816

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
17UNION OIL COMPANY OF CALIFORNIA22,4052005-03-30
14UNOCAL EXPLORATION CORPORATION22,9002005-03-28
EOF // data source: Texas Railroad Commission // 2026