BIRKHEAD

Oil · District 10 · Lease #33015

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

98k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2026-01

Peak Month

2015-03

Production History

Cum Oil: 97,795 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,203 BBL/mo

Di (annual)

457.0%

b-factor

1.6

EUR

78,657 BBL

R-squared

0.701

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA, INC.111,6002014-05-22
1PARKER & PARSLEY, LTD.19,6001990-12-17
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