UNIVERSITY -36-

Oil // district 10 // lease#17838

op: UNION OIL COMPANY OF CALIFORNIA

cum_oil

393k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2026-03

peak_month

1993-06

-- production_history

cum_oil: 393,046 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,328 BBL/mo

Di (annual)

28.0%

b-factor

0.0

EUR

400,188 BBL

R-squared

0.805

type

exponential

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2WTG EXPLORATION212,0002013-02-21
6PURE RESOURCES, L.P.112,8152003-04-10
1PURE RESOURCES, L.P.112,6362002-01-24
7PURE RESOURCES, L.P.112,7682002-01-17
3PURE RESOURCES, L.P.112,6652001-11-06
442-003-06577--------
542-003-06529--------
EOF // data source: Texas Railroad Commission // 2026