CURTIS "K"

Oil · District 10 · Lease #33078

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

295k BBL

Cum Gas

0 MCF

Wells

8

Production

1993-01 — 2015-01

Peak Month

2013-05

Production History

Cum Oil: 294,933 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,872 BBL/mo

Di (annual)

101.2%

b-factor

2.0

EUR

418,243 BBL

R-squared

0.566

type

hyperbolic

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5PIONEER NATURAL RES. USA, INC.112,3002012-02-21
7PIONEER NATURAL RES. USA, INC.112,3002012-02-21
6PIONEER NATURAL RES. USA, INC.111,6502010-09-29
8PIONEER NATURAL RES. USA, INC.110,1002005-07-14
4PARKER & PARSLEY DEVELOPMENT CO.19,7501991-03-18
2PARKER & PARSLEY, LTD.19,7751991-02-04
3PARKER & PARSLEY, LTD.19,7501991-01-30
1PARKER & PARSLEY, LTD.29,7501990-12-28
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