SALES

Oil · District 8A · Lease #67395

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

470k BBL

Cum Gas

3 MCF

casinghead

Wells

1

Production

1995-04 — 2012-07

Peak Month

2005-04

Production History

Cum Oil: 469,767 BBL Cum Gas: 3 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,912 BBL/mo

Di (annual)

92.1%

b-factor

0.1

EUR

100,115 BBL

R-squared

0.793

type

hyperbolic

Operator History (from monthly production reports)

1997-10 — 2026-07 MCDONNOLD OPERATING, INC. 346 mo
1997-09 — 1997-09 PIONEER NATURAL RES. USA, INC. 1 mo
1995-04 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 29 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MCDONNOLD OPERATING INC.512,0001994-09-14