TRUST "139" LEASE

Oil // district 8 // lease#28691

op: VAN OPERATING, LTD.

cum_oil

17k BBL

cum_gas

0 MCF

wells

1

production

1999-10 — 2004-04

peak_month

2000-03

-- production_history

cum_oil: 17,407 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,778 BBL/mo

Di (annual)

562.4%

b-factor

0.5

EUR

11,738 BBL

R-squared

0.823

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1VAN OPERATING, LTD.35,0001999-10-21
EOF // data source: Texas Railroad Commission // 2026