ZIMMER

Oil · District 02 · Lease #4511

Operator: PETRA OLEUM CORP.

Cum Oil

25k BBL

Cum Gas

7k MCF

casinghead

Wells

5

Production

1993-01 — 2017-09

Peak Month

2007-03

Production History

Cum Oil: 24,870 BBL Cum Gas: 7,233 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

840 BBL/mo

Di (annual)

200.4%

b-factor

1.2

EUR

30,821 BBL

R-squared

0.598

type

hyperbolic

Operator History (from monthly production reports)

1999-04 — 2026-07 PETRA OLEUM CORP. 328 mo
1997-02 — 1999-03 COSTILLA ENERGY, INC. 26 mo
1996-06 — 1997-01 COSTILLA PETROLEUM CORPORATION 8 mo
1995-03 — 1996-05 PARKER & PARSLEY DEVELOPMENT L.P 15 mo
1993-11 — 1995-02 MIDPAR L.P. 16 mo
1993-01 — 1993-10 GRAHAM ROYALTY, LTD. 10 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PETRA OLEUM CORP.22,4002012-03-08
4PETRA OLEUM CORP.33,0492010-05-06
5PETRA OLEUM CORP.12,7302000-01-26
1 APETRO-LEWIS CORPORATION14,9111982-09-07
342-469-01276PETRA OLEUM CORP.------