STATE TRACT 470

Oil // district 4 // lease#12545

op: CHAPARRAL (USA) ENERGY, INC.

cum_oil

115k BBL

cum_gas

0 MCF

wells

1

production

1996-02 — 2011-01

peak_month

1996-03

-- production_history

cum_oil: 115,168 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

3,013 BBL/mo

Di (annual)

29.6%

b-factor

0.0

EUR

122,041 BBL

R-squared

0.591

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5BRISTOL RESOURCES CORPORATION512,2331995-09-06
EOF // data source: Texas Railroad Commission // 2026