GLASS -M-

Oil · District 08 · Lease #31188

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

31k BBL

Cum Gas

153k MCF

casinghead

Wells

1

Production

1993-01 — 2013-04

Peak Month

1993-03

Production History

Cum Oil: 31,222 BBL Cum Gas: 152,583 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

193 BBL/mo

Di (annual)

32.9%

b-factor

2.0

EUR

33,953 BBL

R-squared

0.673

type

hyperbolic

Operator History (from monthly production reports)

1997-09 — 2015-10 PIONEER NATURAL RES. USA, INC. 218 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.19,5201987-01-26