MATTHEWS

Oil // district 1 // lease#18901

op: FIRST ROCK, INC.

cum_oil

1k BBL

cum_gas

0 MCF

wells

1

production

2015-12 — 2026-03

peak_month

2016-01

-- production_history

cum_oil: 1,348 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

359 BBL/mo

Di (annual)

360.1%

b-factor

0.0

EUR

1,203 BBL

R-squared

0.753

type

exponential

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HFIRST ROCK, INC.39,7502016-07-12
EOF // data source: Texas Railroad Commission // 2026