< leases

MATHIS "A"

Oil · District 8A · Lease #63031

Operator: PARKER & PARSLEY DEVELOPMENT L.P

Fields: TEX-HAMON (DEAN)

Cum Oil

19k BBL

Cum Gas

70k MCF

casinghead

Wells

1

Production

1993-01 — 2003-10

Peak Month

1993-09

Production History

Cum Oil: 18,749 BBL Cum Gas: 69,527 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

240 BBL/mo

Di (annual)

9.6%

b-factor

0.0

EUR

29,910 BBL

R-squared

0.449

type

exponential

Operator History (from monthly production reports)

1999-08 — 2010-01 BRECK OPERATING CORP. 126 mo
1998-01 — 1999-07 CONCHO RESOURCES INC. 19 mo
1997-02 — 1997-12 COSTILLA ENERGY, INC. 11 mo
1995-06 — 1997-01 COSTILLA PETROLEUM CORPORATION 20 mo
1995-03 — 1995-05 PARKER & PARSLEY DEVELOPMENT L.P 3 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-115-31406BRECK OPERATING CORP.29,5002026-01-21