FOSTER, R. W. -23-

Oil // district 10 // lease#4661

op: XOG OPERATING LLC

cum_oil

312k BBL

cum_gas

0 MCF

wells

7

production

1993-01 — 2026-03

peak_month

1995-08

-- production_history

cum_oil: 312,113 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

2,929 BBL/mo

Di (annual)

16.3%

b-factor

0.0

EUR

216,162 BBL

R-squared

0.863

type

exponential

-- wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2FINA OIL & CHEMICAL COMPANY12,3151987-10-22
17WAMERICAN PETROFINA CO. OF TEX.12,4001985-03-15
142-431-00094--------
1042-431-00103--------
1542-431-10432--------
342-431-00097--------
842-431-00101--------
EOF // multi-state drilling data platform // 2026