< leases

SCOTT, S.A.

Oil · District 7B · Lease #20727

Operator: PETRA OLEUM CORP.

Fields: OBRIEN (STRAWN)

Cum Oil

16k BBL

Cum Gas

8k MCF

casinghead

Wells

2

Production

1993-01 — 2008-01

Peak Month

1993-01

Production History

Cum Oil: 15,919 BBL Cum Gas: 8,250 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

137 BBL/mo

Di (annual)

7.9%

b-factor

0.0

EUR

20,482 BBL

R-squared

0.408

type

exponential

Operator History (from monthly production reports)

2008-06 — 2026-07 CHISHOLM OPERATING, INC. 218 mo
2007-09 — 2008-05 L.C.S. PRODUCTION COMPANY 9 mo
1997-05 — 2007-08 PETRA OLEUM CORP. 124 mo
1997-02 — 1997-04 COSTILLA ENERGY, INC. 3 mo
1993-01 — 1997-01 COSTILLA PETROLEUM CORPORATION 49 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2A42-207-31550CHISHOLM OPERATING INC.15,0001984-04-04
1 A42-207-31507CHISHOLM OPERATING INC.15,0001983-11-30