LONGHORN

Oil // district 6 // lease#13607

op: SPARTAN OPERATING COMPANY, INC.

cum_oil

5k BBL

cum_gas

0 MCF

wells

2

production

1996-02 — 2025-05

peak_month

1996-03

-- production_history

cum_oil: 4,667 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

330 BBL/mo

Di (annual)

96.6%

b-factor

0.0

EUR

4,086 BBL

R-squared

0.503

type

exponential

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1S M K ENERGY CORPORATION410,2001994-06-20
2AMOCO PRODUCTION COMPANY17,0001994-01-13
EOF // data source: Texas Railroad Commission // 2026