GLASS -T-

Oil · District 08 · Lease #31517

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

36k BBL

Cum Gas

165k MCF

casinghead

Wells

1

Production

1993-01 — 2012-09

Peak Month

1994-04

Production History

Cum Oil: 36,439 BBL Cum Gas: 165,426 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

240 BBL/mo

Di (annual)

42.2%

b-factor

0.0

EUR

6,814 BBL

R-squared

0.405

type

exponential

Operator History (from monthly production reports)

1997-09 — 2015-04 PIONEER NATURAL RES. USA, INC. 212 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.19,5001987-09-23