BLACKJACK

Oil // district 11 // lease#67306

op: SIANA OIL & GAS

cum_oil

77k BBL

cum_gas

0 MCF

wells

1

production

1994-10 — 2026-03

peak_month

1994-11

-- production_history

cum_oil: 77,419 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,495 BBL/mo

Di (annual)

29.4%

b-factor

0.2

EUR

76,024 BBL

R-squared

0.688

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PLACID OIL COMPANY213,0001994-06-13
EOF // data source: Texas Railroad Commission // 2026