MASHBURN

Oil · District 10 · Lease #33322

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

89k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2026-03

Peak Month

2008-07

Production History

Cum Oil: 89,202 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

680 BBL/mo

Di (annual)

40.1%

b-factor

0.6

EUR

41,639 BBL

R-squared

0.660

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA, INC.19,6002008-03-03
1PARKER & PARSLEY DEVELOPMENT CO.19,1001991-03-20
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