OLDHAM TRUST EAST

Oil // district 10 // lease#51706

op: SURGE OPERATING, LLC

cum_oil

1.8M BBL

cum_gas

0 MCF

wells

8

production

2019-06 — 2026-03

peak_month

2024-06

-- production_history

cum_oil: 1,786,274 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

71,300 BBL/mo

Di (annual)

283.2%

b-factor

2.0

EUR

4,792,443 BBL

R-squared

0.760

type

hyperbolic

-- wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SHSURGE OPERATING, LLC18,5002023-12-11
2AHSURGE OPERATING, LLC18,5002023-12-11
3AHSURGE OPERATING, LLC18,5002023-12-11
3SHSURGE OPERATING, LLC18,5002023-12-11
4AHSURGE OPERATING, LLC18,5002023-12-11
3875LSGRENADIER ENERGY PARTNERS II,LLC114,0002018-12-31
3876WAGRENADIER ENERGY PARTNERS II,LLC114,0002018-12-17
3871WAGRENADIER ENERGY PARTNERS II,LLC115,0002018-01-30
EOF // data source: Texas Railroad Commission // 2026