PRIBYL

Oil · District 02 · Lease #4504

Operator: PETRA OLEUM CORP.

Cum Oil

5k BBL

Cum Gas

28k MCF

casinghead

Wells

6

Production

1993-01 — 1995-11

Peak Month

1994-01

Production History

Cum Oil: 4,713 BBL Cum Gas: 27,898 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

349 BBL/mo

Di (annual)

86.3%

b-factor

0.0

EUR

4,844 BBL

R-squared

0.777

type

exponential

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 (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12DPETRA OLEUM CORP.43,8002010-08-06
9PETRA OLEUM CORP.22,9202010-07-09
10PETRA OLEUM CORP.12,5002003-09-03
642-469-01291PETRA OLEUM CORP.------
742-469-01292PETRA OLEUM CORP.------
842-469-01293PETRA OLEUM CORP.------