EXXON MINERAL FEE

Oil // district 3 // lease#20621

op: RUSK ENERGY OPERATING LLC

cum_oil

682k BBL

cum_gas

0 MCF

wells

5

production

1993-01 — 2026-03

peak_month

1997-05

-- production_history

cum_oil: 681,688 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

6,383 BBL/mo

Di (annual)

19.1%

b-factor

0.0

EUR

401,145 BBL

R-squared

0.739

type

exponential

-- wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6EXXON CORP.38,8502016-07-13
2EXXON CORP.48,1502015-09-25
3EXXON CORP.48,1502008-11-21
1EXXON CORP.48,8002008-02-11
4EXXON CORP.28,1582004-06-24
EOF // data source: Texas Railroad Commission // 2026