JOHNSON, NAT

Oil // district 1 // lease#12861

op: VERMILLION PRODUCTION, INC.

cum_oil

28k BBL

cum_gas

0 MCF

wells

1

production

1993-01 — 2012-06

peak_month

2006-09

-- production_history

cum_oil: 27,801 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

438 BBL/mo

Di (annual)

316.2%

b-factor

2.0

EUR

27,969 BBL

R-squared

0.427

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1TEXSTAR NORTH AMERICA, INC.15,8501990-09-21
EOF // data source: Texas Railroad Commission // 2026