JOHNSTON "K"

Oil // district 6 // lease#15102

op: SOUTHWEST OPERATING, INC.-TYLER

cum_oil

952 BBL

cum_gas

0 MCF

wells

1

production

2011-10 — 2026-03

peak_month

2011-12

-- production_history

cum_oil: 952 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

40 BBL/mo

Di (annual)

270.2%

b-factor

1.2

EUR

984 BBL

R-squared

0.564

type

hyperbolic

-- wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3TXO PRODUCTION CORP.39,7002010-11-23
EOF // data source: Texas Railroad Commission // 2026