TUNNELL, A. R. 59

Oil // district 5 // lease#3217

op: UNION OIL COMPANY OF CALIFORNIA

cum_oil

125k BBL

cum_gas

0 MCF

wells

8

production

1993-01 — 2013-01

peak_month

1996-03

-- production_history

cum_oil: 125,289 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,324 BBL/mo

Di (annual)

32.2%

b-factor

0.0

EUR

86,577 BBL

R-squared

0.576

type

exponential

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6UNION OIL COMPANY OF CALIFORNIA13,0051996-04-24
8UNION OIL COMPANY OF CALIFORNIA12,9351996-02-15
17UNION OIL COMPANY OF CALIFORNIA23,0001996-02-13
20UNOCAL EXPLORATION CORPORATION12,4401991-02-19
19UNOCAL EXPLORATION CORPORATION12,5401991-01-28
13UNION EXPL. PARTNERS, LTD.12,9621989-11-10
7UNION EXPL. PARTNERS, LTD.12,9591989-02-21
1UNION EXPL. PARTNERS, LTD.13,0101988-02-03
EOF // data source: Texas Railroad Commission // 2026