FOSTER, W. L. JR. "B"

Oil · District 08 · Lease #28186

Operator: XOG OPERATING LLC

Fields: CONGER (PENN)

Cum Oil

3k BBL

Cum Gas

47k MCF

casinghead

Wells

4

Production

1993-01 — 2025-04

Peak Month

1993-03

Production History

Cum Oil: 3,427 BBL Cum Gas: 47,002 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

217 BBL/mo

Di (annual)

283.2%

b-factor

0.0

EUR

921 BBL

R-squared

0.506

type

exponential

Operator History (from monthly production reports)

2020-04 — 2026-07 D & D ENTERPRISES 76 mo

2016-04 — 2020-03 BAYLOR OPERATING, LLC 48 mo

2009-09 — 2016-03 XOG OPERATING LLC 79 mo

2005-04 — 2009-08 BARKER BROWN INVESTMENTS, LLC. 53 mo

2005-01 — 2005-03 RORY ENERGY 3 mo

2004-08 — 2004-12 ADT INVESTMENTS, INC. 5 mo

2002-04 — 2004-07 XERIC OIL & GAS CORPORATION 28 mo

1999-04 — 2002-03 POWELL, A. BRANDT CO. 36 mo

1995-08 — 1999-03 POWELL, A. BRANDT 44 mo

1994-11 — 1995-07 DALLAS PRODUCTION, INC. 9 mo

1993-01 — 1994-10 UNION OIL COMPANY OF CALIFORNIA 22 mo

Wells (4)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
13	42-431-31298	D & D ENTERPRISES	2	8,400	1993-01-26
16	42-431-31578	OWL OPS LLC	1	8,600	1984-12-17
15	42-431-31474	OWL OPS LLC	1	8,400	1984-05-15
14	42-431-31410	OWL OPS LLC	1	8,400	1983-10-20