HOUSTON OIL UNIT

Oil // district 4 // lease#11982

op: VASTAR RESOURCES, INC.

fields: DONNA (20-C)

cum_oil

97k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2005-02

peak_month

1993-01

-- production_history

cum_oil: 97,382 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,305 BBL/mo

Di (annual)

27.7%

b-factor

0.0

EUR

99,944 BBL

R-squared

0.640

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5VASTAR RESOURCES, INC.48,5002000-05-09
EOF // data source: Texas Railroad Commission // 2026