CURTIS "N"

Oil · District 10 · Lease #33140

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

70k BBL

Cum Gas

0 MCF

Wells

2

Production

1993-01 — 2015-01

Peak Month

2011-04

Production History

Cum Oil: 69,960 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,001 BBL/mo

Di (annual)

102.1%

b-factor

0.7

EUR

61,645 BBL

R-squared

0.879

type

hyperbolic

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2PIONEER NATURAL RES. USA, INC.111,5002010-07-22
1PARKER & PARSLEY, LTD.29,7501991-01-10
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