SWAIN, W. F. 36

Oil // district 5 // lease#3168

op: UNION OIL COMPANY OF CALIFORNIA

cum_oil

254k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2026-03

peak_month

1993-01

-- production_history

cum_oil: 254,219 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

4,059 BBL/mo

Di (annual)

78.5%

b-factor

0.5

EUR

118,109 BBL

R-squared

0.489

type

hyperbolic

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9UNION OIL COMPANY OF CALIFORNIA43,2422025-05-15
2UNION EXPL. PARTNERS, LTD.23,0022025-03-13
10UNION OIL COMPANY OF CALIFORNIA23,2502014-03-22
12UNION OIL COMPANY OF CALIFORNIA22,9501996-05-21
3UNION OIL COMPANY OF CALIFORNIA13,0081995-09-12
11UNION OIL COMPANY OF CALIFORNIA12,5001992-10-27
8UNION EXPL. PARTNERS, LTD.22,4201989-07-19
EOF // data source: Texas Railroad Commission // 2026