ASHLEY

Oil · District 08 · Lease #21773

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

149k BBL

Cum Gas

414k MCF

casinghead

Wells

4

Production

1993-01 — 2023-05

Peak Month

2015-08

Production History

Cum Oil: 149,111 BBL Cum Gas: 413,599 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,159 BBL/mo

Di (annual)

27.6%

b-factor

0.0

EUR

93,858 BBL

R-squared

0.771

type

exponential

Operator History (from monthly production reports)

1997-09 — 2026-07 PIONEER NATURAL RES. USA, INC. 347 mo
1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo
1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3PIONEER NATURAL RES. USA INC.111,3002011-08-30
4PIONEER NATURAL RES. USA INC.111,3002011-08-09
2PIONEER NATURAL RES. USA INC.19,7752006-07-10
142-317-30196PIONEER NATURAL RES. USA INC.------