DONLEY

Oil // district 9 // lease#18006

op: ELCO OIL & GAS, INC.

cum_oil

3k BBL

cum_gas

0 MCF

wells

2

production

2011-11 — 2026-03

peak_month

2011-11

-- production_history

cum_oil: 3,226 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

153 BBL/mo

Di (annual)

126.9%

b-factor

0.4

EUR

2,291 BBL

R-squared

0.488

type

hyperbolic

-- wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2ELCO OIL & GAS11,0002012-09-07
1HEXAGON OIL AND GAS INC.36,7002011-08-25
EOF // data source: Texas Railroad Commission // 2026