JOST

Oil · District 10 · Lease #38168

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

52k BBL

Cum Gas

0 MCF

Wells

4

Production

2006-12 — 2026-03

Peak Month

2007-07

Production History

Cum Oil: 52,181 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

1,356 BBL/mo

Di (annual)

96.3%

b-factor

1.1

EUR

73,865 BBL

R-squared

0.882

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7PIONEER NATURAL RES. USA, INC.110,0002006-12-20
8PIONEER NATURAL RES. USA, INC.110,0002006-12-20
4PIONEER NATURAL RES. USA, INC.29,5002006-10-02
6PIONEER NATURAL RES. USA, INC.29,5002006-08-30
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