FOSTER, R. W. -23-

Oil · District 10 · Lease #8559

Operator: XOG OPERATING LLC

Cum Oil

13k BBL

Cum Gas

0 MCF

Wells

7

Production

1993-01 — 2026-03

Peak Month

1993-03

Production History

Cum Oil: 13,401 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

204 BBL/mo

Di (annual)

49.5%

b-factor

0.5

EUR

9,157 BBL

R-squared

0.533

type

hyperbolic

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
19WAMERICAN PETROFINA CO. OF TEX.11,2001985-03-19
18WAMERICAN PETROFINA CO. OF TEX.11,2001985-03-15
1142-431-00104--------
1442-431-10309--------
1642-431-30053--------
742-431-00092--------
942-431-00102--------
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