< leases

BARFIELD 8 -A-

Oil · District 08 · Lease #31499

Operator: PIONEER NATURAL RES. USA, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

2k BBL

Cum Gas

94k MCF

casinghead

Wells

2

Production

1993-01 — 1999-03

Peak Month

1993-07

Production History

Cum Oil: 2,411 BBL Cum Gas: 94,237 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

128 BBL/mo

Di (annual)

112.5%

b-factor

0.3

EUR

1,893 BBL

R-squared

0.672

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2025-10 PIONEER NATURAL RES. USA, INC. 57 mo
2017-05 — 2021-01 PARSLEY ENERGY OPERATIONS, LLC 45 mo
2017-01 — 2017-04 DE OPERATING LLC 4 mo
2004-01 — 2016-12 NORTHSTAR OPERATING COMPANY 156 mo
1996-02 — 2003-12 LIMARK CORPORATION 95 mo
1993-01 — 1996-01 MWJ PRODUCING COMPANY 37 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-173-31774PIONEER NATURAL RES. USA INC.210,5501987-11-18
1 C42-173-31774PIONEER NATURAL RES. USA INC.210,5501987-11-18