DUBOSE

Oil // district 1 // lease#15406

op: MARATHON OIL EF LLC

cum_oil

139k BBL

cum_gas

0 MCF

wells

3

production

2010-12 — 2026-03

peak_month

2011-08

-- production_history

cum_oil: 138,646 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

9,569 BBL/mo

Di (annual)

208.1%

b-factor

0.3

EUR

78,827 BBL

R-squared

0.893

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HUNION GAS OPERATING COMPANY111,4002010-10-01
3HUNION GAS OPERATING COMPANY214,4832010-08-31
1HUNION GAS OPERATING COMPANY211,5002010-06-28
EOF // data source: Texas Railroad Commission // 2026