HEISER

Oil // district 1 // lease#17926

op: BLACKBRUSH O & G, LLC

cum_oil

21k BBL

cum_gas

0 MCF

wells

1

production

2012-11 — 2026-03

peak_month

2014-03

-- production_history

cum_oil: 21,372 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

224 BBL/mo

Di (annual)

10.9%

b-factor

0.0

EUR

24,710 BBL

R-squared

0.479

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HBLACKBRUSH O & G, LLC37,5002019-06-26
EOF // data source: Texas Railroad Commission // 2026