FOSTER, R. W. -23-

Oil · District 10 · Lease #4661

Operator: 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--------
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