COSEKA/SAXON-KEENEY "A"

Oil // district 9 // lease#10547

op: HEC PETROLEUM, INC.

cum_oil

62k BBL

cum_gas

0 MCF

wells

3

production

1993-01 — 2013-06

peak_month

2001-02

-- production_history

cum_oil: 61,842 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

506 BBL/mo

Di (annual)

13.7%

b-factor

0.0

EUR

44,308 BBL

R-squared

0.474

type

exponential

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3HALLWOOD PETROLEUM, INC.311,0002000-11-01
1COSEKA RESOURCES (U.S.A.) LTD.19,3501983-11-18
2COSEKA RESOURCES (U.S.A.) LTD.19,3501983-11-18
EOF // data source: Texas Railroad Commission // 2026