SWAIN, W. F. 9

Oil // district 5 // lease#3623

op: UNION OIL COMPANY OF CALIFORNIA

fields: VAN (JAMES)

cum_oil

120k BBL

cum_gas

0 MCF

wells

3

production

1997-10 — 2023-03

peak_month

1999-01

-- production_history

cum_oil: 120,112 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

8,587 BBL/mo

Di (annual)

565.9%

b-factor

0.7

EUR

54,746 BBL

R-squared

0.562

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12UNION OIL COMPANY OF CALIFORNIA35,7012019-06-26
12LUNION OIL COMPANY OF CALIFORNIA35,7012019-06-26
14UNION OIL COMPANY OF CALIFORNIA25,5001998-11-16
EOF // data source: Texas Railroad Commission // 2026