HALLMARK B

Oil // district 8 // lease#29543

op: BLACKWATER OIL & GAS CORPORATION

cum_oil

393 BBL

cum_gas

0 MCF

wells

1

production

2004-12 — 2006-09

peak_month

2005-01

-- production_history

cum_oil: 393 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

84 BBL/mo

Di (annual)

460.4%

b-factor

0.0

EUR

220 BBL

R-squared

0.442

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2BLACKWATER OIL & GAS CORPORATION33,9002012-08-08
EOF // data source: Texas Railroad Commission // 2026