SWAIN, D. L. 11 -AC-

Oil // district 5 // lease#2087

op: UNION OIL COMPANY OF CALIFORNIA

fields: VAN

cum_oil

845k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2026-03

peak_month

1997-03

-- production_history

cum_oil: 845,117 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

3,438 BBL/mo

Di (annual)

5.4%

b-factor

0.1

EUR

752,323 BBL

R-squared

0.686

type

hyperbolic

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
25UNION OIL COMPANY OF CALIFORNIA12,9502004-08-05
3UNION OIL COMPANY OF CALIFORNIA12,8942004-06-04
6UNION OIL COMPANY OF CALIFORNIA12,9512002-09-18
12UNION OIL COMPANY OF CALIFORNIA13,0001985-08-21
142-467-00512--------
542-467-00506--------
942-467-30038--------
EOF // data source: Texas Railroad Commission // 2026