CHATO 27

Oil // district 1 // lease#16958

op: VANGUARD PERMIAN, LLC

cum_oil

2k BBL

cum_gas

0 MCF

wells

3

production

2011-11 — 2016-04

peak_month

2012-05

-- production_history

cum_oil: 1,535 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

142 BBL/mo

Di (annual)

770.7%

b-factor

1.5

EUR

3,248 BBL

R-squared

0.736

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2471VANGUARD PERMIAN, LLC17,9002011-08-01
76VANGUARD PERMIAN, LLC17,9002011-07-08
86VANGUARD PERMIAN, LLC17,9002011-07-08
EOF // data source: Texas Railroad Commission // 2026