RYAN "A"

Oil · District 03 · Lease #13445

Operator: SANTA FE ENERGY RESOURCES, INC.

Fields: CALDWELL (AUSTIN CHALK)

Cum Oil

9k BBL

Cum Gas

105k MCF

casinghead

Wells

1

Production

1993-01 — 1997-07

Peak Month

1993-12

Production History

Cum Oil: 9,386 BBL Cum Gas: 105,449 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

604 BBL/mo

Di (annual)

144.4%

b-factor

0.3

EUR

7,093 BBL

R-squared

0.780

type

hyperbolic

Operator History (from monthly production reports)

1997-02 — 1998-04 COSTILLA ENERGY, INC. 15 mo

1996-06 — 1997-01 COSTILLA PETROLEUM CORPORATION 8 mo

1995-02 — 1996-05 PARKER & PARSLEY PRODUCING L.P. 16 mo

1994-10 — 1995-01 PARKER & PARSLEY DEVELOPMENT L.P 4 mo

1994-04 — 1994-09 BRIDGE OIL COMPANY, L. P. 6 mo

1993-01 — 1994-03 SANTA FE ENERGY RESOURCES, INC. 15 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-051-30804	XTO ENERGY INC.	2	12,000	1997-07-02