BALL, SAM

Oil // district 1 // lease#837

op: ZAF OIL

fields: LA VERNIA

cum_oil

7k BBL

cum_gas

0 MCF

wells

14

production

1993-01 — 2026-03

peak_month

1993-09

-- production_history

cum_oil: 6,795 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

71 BBL/mo

Di (annual)

42.1%

b-factor

0.6

EUR

4,161 BBL

R-squared

0.402

type

hyperbolic

-- wells (14)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
14TEXAS SECONDARY OIL CORPORATION18502016-06-15
1AZAF OIL19001990-10-03
142-187-80031--------
1042-187-80040--------
1142-187-80041--------
1242-187-80042--------
242-187-80032--------
342-187-80033--------
442-187-80034--------
542-187-80035--------
642-187-80036--------
742-187-80037--------
842-187-80038--------
942-187-80039--------
EOF // data source: Texas Railroad Commission // 2026