COX "9"

Oil // district 10 // lease#36430

op: ENDEAVOR ENERGY RESOURCES L.P.

cum_oil

236k BBL

cum_gas

0 MCF

wells

4

production

2000-04 — 2026-03

peak_month

2012-03

-- production_history

cum_oil: 235,606 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,692 BBL/mo

Di (annual)

19.8%

b-factor

0.0

EUR

163,143 BBL

R-squared

0.728

type

exponential

-- wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4ENDEAVOR ENERGY RESOURCES L.P.212,0002011-07-15
3ENDEAVOR ENERGY RESOURCES L.P.212,0002011-07-14
1STEPHENS, AUTRY C.211,0002000-06-09
2STEPHENS, AUTRY C.111,0002000-04-20
EOF // data source: Texas Railroad Commission // 2026