GLASS -Q-

Oil · District 08 · Lease #31476

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

56k BBL

Cum Gas

129k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 56,414 BBL Cum Gas: 129,298 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

436 BBL/mo

Di (annual)

18.2%

b-factor

0.7

EUR

55,013 BBL

R-squared

0.749

type

hyperbolic

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 (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PIONEER NATURAL RES. USA, INC.19,5001987-08-18
2PIONEER NATURAL RES. USA, INC.19,5001987-08-05