LOCKHART 82

Oil // district 14 // lease#8185

op: PRESIDIO PETROLEUM LLC

cum_oil

19k BBL

cum_gas

0 MCF

wells

2

production

2009-10 — 2026-03

peak_month

2012-05

-- production_history

cum_oil: 18,628 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

649 BBL/mo

Di (annual)

152.5%

b-factor

0.9

EUR

19,215 BBL

R-squared

0.523

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HAGRANITE OPERATING COMPANY17,8002010-08-03
1UPLAND RESOURCES, INC.18,0002003-12-16
EOF // data source: Texas Railroad Commission // 2026