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Oil · District 08 · Lease #31565

Operator: PARKER & PARSLEY DEVELOPMENT L.P

Cum Oil

10k BBL

Cum Gas

24k MCF

casinghead

Wells

2

Production

1993-01 — 1997-06

Peak Month

1994-09

Production History

Cum Oil: 9,715 BBL Cum Gas: 24,158 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

492 BBL/mo

Di (annual)

430.9%

b-factor

1.0

EUR

7,389 BBL

R-squared

0.667

type

hyperbolic

Operator History (from monthly production reports)

1998-03 — 1998-09 20TH CENTURY PIPE & EQUIP.CO.INC 7 mo
1997-02 — 1998-02 COSTILLA ENERGY, INC. 13 mo
1996-06 — 1997-01 COSTILLA PETROLEUM CORPORATION 8 mo
1995-03 — 1996-05 PARKER & PARSLEY DEVELOPMENT L.P 15 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1COSTILLA ENERGY, INC.26,6001988-07-26
2PARKER & PARSLEY PETROLEUM CO.26,5501987-08-12