GOLLADAY -F-

Oil · District 08 · Lease #26153

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

41k BBL

Cum Gas

148 MCF

casinghead

Wells

2

Production

1993-01 — 1999-02

Peak Month

1993-05

Production History

Cum Oil: 40,773 BBL Cum Gas: 148 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

775 BBL/mo

Di (annual)

13.8%

b-factor

0.0

EUR

67,470 BBL

R-squared

0.595

type

exponential

Operator History (from monthly production reports)

2000-02 — 2000-06 PARKER & PARSLEY OPERATING LLC 5 mo
1999-02 — 2000-01 OGA OPERATING L.L.C. 12 mo
1997-09 — 1999-01 PIONEER NATURAL RES. USA, INC. 17 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4PARKER & PARSLEY OPERATING LLC14,1501984-12-13
1PARKER & PARSLEY OPERATING LLC14,5001980-08-22