TSRH

Oil // district 9 // lease#15508

op: LAVANCO ENERGY, INC.

cum_oil

275 BBL

cum_gas

0 MCF

wells

1

production

2004-01 — 2005-12

peak_month

2004-01

-- production_history

cum_oil: 275 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

37 BBL/mo

Di (annual)

245.3%

b-factor

0.0

EUR

179 BBL

R-squared

0.663

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1136SANCHEZ-O'BRIEN OIL & GAS CORP.58,9052005-02-28
EOF // data source: Texas Railroad Commission // 2026