STUMHOFFER "A"

Oil · District 9 · Lease #12975

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

14k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2019-09

Peak Month

1993-03

Production History

Cum Oil: 14,430 BBL Cum Gas: 0 MCF

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

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PARKER & PARSLEY, LTD.18,6501990-11-12
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