LOCKHART 10

Oil // district 14 // lease#8569

op: PRESIDIO PETROLEUM LLC

cum_oil

182k BBL

cum_gas

0 MCF

wells

2

production

2011-12 — 2026-03

peak_month

2012-01

-- production_history

cum_oil: 181,937 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,031 BBL/mo

Di (annual)

153.0%

b-factor

0.6

EUR

163,546 BBL

R-squared

0.831

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2HDAPACHE CORPORATION18,0002012-08-14
4HBGRANITE OPERATING COMPANY17,8002011-07-14
EOF // data source: Texas Railroad Commission // 2026