WINDHAM "E"

Oil · District 9 · Lease #11810

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

173k BBL

Cum Gas

0 MCF

Wells

4

Production

1993-01 — 2026-03

Peak Month

2010-05

Production History

Cum Oil: 173,240 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,516 BBL/mo

Di (annual)

32.9%

b-factor

0.2

EUR

114,477 BBL

R-squared

0.885

type

hyperbolic

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4PIONEER NATURAL RES. USA, INC.111,3002009-11-17
3PIONEER NATURAL RES. USA, INC.211,3002009-09-16
1PARKER & PARSLEY PETROLEUM CO.19,2001985-12-31
2PARKER & PARSLEY PETROLEUM CO.19,2001985-12-27
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