URBAN "A"

Oil · District 02 · Lease #8129

Operator: COSTILLA PETROLEUM CORPORATION

Cum Oil

5k BBL

Cum Gas

670 MCF

casinghead

Wells

1

Production

1995-09 — 1998-07

Peak Month

1995-10

Production History

Cum Oil: 5,172 BBL Cum Gas: 670 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

289 BBL/mo

Di (annual)

915.9%

b-factor

1.2

EUR

3,544 BBL

R-squared

0.784

type

hyperbolic

Operator History (from monthly production reports)

1997-02 — 2000-07 COSTILLA ENERGY, INC. 42 mo
1995-09 — 1997-01 COSTILLA PETROLEUM CORPORATION 17 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2COSTILLA ENERGY, INC.75,3502002-01-10