< leases

PATTERSON "A"

Oil · District 03 · Lease #12556

Operator: SMITH BROTHERS OIL & GAS, INC.

Fields: STONE CITY (AUSTIN CHALK)

Cum Oil

10k BBL

Cum Gas

36k MCF

casinghead

Wells

1

Production

1993-01 — 1997-01

Peak Month

1993-08

Production History

Cum Oil: 9,891 BBL Cum Gas: 36,300 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

295 BBL/mo

Di (annual)

23.2%

b-factor

0.0

EUR

15,183 BBL

R-squared

0.481

type

exponential

Operator History (from monthly production reports)

2000-04 — 2001-01 SMITH BROTHERS OIL & GAS, INC. 10 mo
1999-04 — 2000-03 PETRA OLEUM CORP. 12 mo
1997-02 — 1999-03 COSTILLA ENERGY, INC. 26 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#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-051-30461SMITH BROTHERS OIL & GAS INC.18,9001979-09-26