WALKER -A-

Oil · District 01 · Lease #10348

Operator: ZANTANA RESOURCES

Fields: DUNLAP

Cum Oil

256 BBL

Cum Gas

3 MCF

casinghead

Wells

5

Production

1993-01 — 1998-12

Peak Month

1993-05

Production History

Cum Oil: 256 BBL Cum Gas: 3 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

47 BBL/mo

Di (annual)

21.1%

b-factor

0.0

EUR

2,591 BBL

R-squared

0.356

type

exponential

Operator History (from monthly production reports)

2004-09 — 2026-07 SHWJ OIL & GAS CO., INC. 263 mo

2002-03 — 2004-08 SHWJ OIL & GAS COMPANY 30 mo

2000-09 — 2002-02 SWJ OIL CO. 18 mo

1996-04 — 2000-08 WEHUNT OIL COMPANY, INC. 53 mo

1995-08 — 1996-03 C S J, INC. 8 mo

1993-09 — 1995-07 TEN-KEY INC. 23 mo

1993-04 — 1993-08 AUSTRAL OIL COMPANY INCORPORATED 5 mo

1993-03 — 1993-03 ZANTANA RESOURCES 1 mo

1993-01 — 1993-02 C S J, INC. 2 mo

Wells (5)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-055-33767	SHWJ OIL & GAS CO. INC.	1	2,850	1984-12-20
2	42-055-33768	SHWJ OIL & GAS CO. INC.	1	2,850	1984-12-20
3	42-055-33769	SHWJ OIL & GAS CO. INC.	1	2,850	1984-12-20
4	42-055-33770	SHWJ OIL & GAS CO. INC.	1	2,850	1984-12-20
5	42-055-33771	SHWJ OIL & GAS CO. INC.	1	2,850	1984-12-20