BARTON 346

Oil // district 14 // lease#7762

op: HIGHMARK ENERGY OPERATING, LLC

cum_oil

249k BBL

cum_gas

0 MCF

wells

4

production

2007-01 — 2026-03

peak_month

2008-07

-- production_history

cum_oil: 249,102 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

7,770 BBL/mo

Di (annual)

72.4%

b-factor

0.4

EUR

211,279 BBL

R-squared

0.884

type

hyperbolic

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6HEOG RESOURCES, INC.29,0002008-02-20
4HEOG RESOURCES, INC.29,0002007-02-26
5HEOG RESOURCES, INC.29,0002007-02-26
1HEOG RESOURCES, INC.19,0002006-10-16
EOF // multi-state drilling data platform // 2026