TUNNELL

Oil · District 10 · Lease #31792

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

59k BBL

Cum Gas

0 MCF

Wells

1

Production

1993-01 — 2014-02

Peak Month

1993-05

Production History

Cum Oil: 59,184 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

552 BBL/mo

Di (annual)

10.6%

b-factor

0.0

EUR

62,469 BBL

R-squared

0.706

type

exponential

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1PARKER & PARSLEY PETROLEUM CO.19,1751987-12-21
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