ROBERTSON -A-

Oil · District 08 · Lease #30850

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

24k BBL

Cum Gas

123k MCF

casinghead

Wells

1

Production

1993-01 — 2009-01

Peak Month

1999-05

Production History

Cum Oil: 24,004 BBL Cum Gas: 122,550 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

179 BBL/mo

Di (annual)

5.3%

b-factor

0.0

EUR

37,901 BBL

R-squared

0.809

type

exponential

Operator History (from monthly production reports)

1997-09 — 2009-10 PIONEER NATURAL RES. USA, INC. 146 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA INC.19,4751986-06-19