ROBTANN "C"

Oil // district 8 // lease#28098

op: WALTER EXPLORATION INC.

cum_oil

62k BBL

cum_gas

0 MCF

wells

1

production

1997-01 — 2014-10

peak_month

1999-12

-- production_history

cum_oil: 62,236 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,720 BBL/mo

Di (annual)

72.3%

b-factor

0.0

EUR

28,554 BBL

R-squared

0.923

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1WALTER EXPLORATION INC.23,9001999-08-02
EOF // data source: Texas Railroad Commission // 2026