SANDEFUR "37A"

Oil · District 10 · Lease #40158

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

37k BBL

Cum Gas

0 MCF

Wells

1

Production

2010-05 — 2026-03

Peak Month

2010-07

Production History

Cum Oil: 37,158 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

787 BBL/mo

Di (annual)

31.0%

b-factor

0.3

EUR

42,805 BBL

R-squared

0.679

type

hyperbolic

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1ENDEAVOR ENERGY RESOURCES L.P.317,0002009-12-17
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