BERNSHAUSEN UNIT

Oil // district 3 // lease#21405

op: STO OPERATING COMPANY

cum_oil

124k BBL

cum_gas

0 MCF

wells

2

production

1993-01 — 2026-03

peak_month

2010-03

-- production_history

cum_oil: 124,324 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,033 BBL/mo

Di (annual)

74.3%

b-factor

0.4

EUR

27,361 BBL

R-squared

0.453

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MARATHON OIL COMPANY411,4002009-11-13
1HMARATHON OIL COMPANY411,4002009-11-13
EOF // data source: Texas Railroad Commission // 2026