SHIELDS -A-

Oil · District 10 · Lease #239

Operator: PETCO PETROLEUM CORP.

Cum Oil

104k BBL

Cum Gas

80k MCF

casinghead

Wells

11

Production

1993-01 — 2026-04

Peak Month

1993-03

Production History

Cum Oil: 103,665 BBL Cum Gas: 79,824 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

596 BBL/mo

Di (annual)

7.1%

b-factor

0.0

EUR

97,839 BBL

R-squared

0.790

type

exponential

Operator History (from monthly production reports)

2020-09 — 2026-07 PETCO ENERGY CORPORATION 71 mo
1999-09 — 2020-08 PETCO PETROLEUM CORP. 252 mo
1998-04 — 1999-08 CHESAPEAKE OPERATING, INC. 17 mo
1993-02 — 1998-03 HUGOTON ENERGY CORPORATION 62 mo
1993-01 — 1993-01 OXY USA INC. 1 mo

Wells (11)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
15PETCO ENERGY CORPORATION13,4751990-04-02
14PETCO ENERGY CORPORATION13,3101980-06-23
1042-179-07145PETCO ENERGY CORPORATION------
1142-179-07146PETCO ENERGY CORPORATION------
1242-179-07147PETCO ENERGY CORPORATION------
1342-179-07148PETCO ENERGY CORPORATION------
242-179-07137PETCO ENERGY CORPORATION------
442-179-07139PETCO ENERGY CORPORATION------
742-179-07142PETCO ENERGY CORPORATION------
842-179-07143PETCO ENERGY CORPORATION------
942-179-07144PETCO ENERGY CORPORATION------