COUNTISS HEIRS

Oil // district 4 // lease#13597

op: HARPER HEFTE, INC.

cum_oil

3k BBL

cum_gas

0 MCF

wells

1

production

2010-03 — 2015-10

peak_month

2010-03

-- production_history

cum_oil: 2,826 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

229 BBL/mo

Di (annual)

81.6%

b-factor

0.1

EUR

3,724 BBL

R-squared

0.637

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HARPER HEFTE, INC.17,8002009-09-24
EOF // data source: Texas Railroad Commission // 2026