ZINN & FORMAN

Oil // district 3 // lease#21401

op: VAST OIL TX OPERATING LLC

cum_oil

2k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2026-03

peak_month

1993-03

-- production_history

cum_oil: 1,965 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

394 BBL/mo

Di (annual)

298.0%

b-factor

0.0

EUR

1,589 BBL

R-squared

0.612

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6SUN EXPL. & PROD. CO.-LAFAYETTE67,6251993-09-22
EOF // data source: Texas Railroad Commission // 2026