GLASS -M-

Oil · District 10 · Lease #31188

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

31k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2015-10

Peak Month

2000-02

Production History

Cum Oil: 31,222 BBL Cum Gas: 0 MCF

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PARKER & PARSLEY PETROLEUM CO.19,5201987-01-26
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