HEISER

Oil // district 1 // lease#16968

op: BLACKBRUSH O & G, LLC

cum_oil

22k BBL

cum_gas

0 MCF

wells

1

production

2011-10 — 2016-03

peak_month

2011-10

-- production_history

cum_oil: 21,560 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,834 BBL/mo

Di (annual)

928.9%

b-factor

1.2

EUR

34,401 BBL

R-squared

0.578

type

hyperbolic

-- wells (1)

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