STUMHOFFER "A"

Oil · District 7C · Lease #12975

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

14k BBL

Cum Gas

173k MCF

casinghead

Wells

1

Production

1993-01 — 2016-05

Peak Month

1995-05

Production History

Cum Oil: 14,430 BBL Cum Gas: 172,831 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

205 BBL/mo

Di (annual)

23.5%

b-factor

0.3

EUR

14,495 BBL

R-squared

0.914

type

hyperbolic

Operator History (from monthly production reports)

2016-06 — 2019-09 PARSLEY ENERGY OPERATIONS, LLC 40 mo
1997-09 — 2016-05 PIONEER NATURAL RES. USA, INC. 225 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
1PARSLEY ENERGY OPERATIONS LLC18,6501990-11-12