DUSEK 4

Oil · District 9 · Lease #17817

Operator: PIONEER NATURAL RES. USA, INC.

Cum Oil

627k BBL

Cum Gas

0 MCF

Wells

9

Production

2012-02 — 2026-03

Peak Month

2013-03

Production History

Cum Oil: 626,555 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

15,156 BBL/mo

Di (annual)

32.6%

b-factor

0.0

EUR

558,401 BBL

R-squared

0.845

type

exponential

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11PARSLEY ENERGY OPERATIONS, LLC113,0002012-10-31
12PARSLEY ENERGY OPERATIONS, LLC113,0002012-10-31
7PARSLEY ENERGY OPERATIONS, LLC113,0002012-10-23
8PARSLEY ENERGY OPERATIONS, LLC213,0002012-09-17
6PARSLEY ENERGY OPERATIONS, LLC114,0002012-03-01
1PARSLEY ENERGY OPERATIONS, LLC113,0002012-01-20
5PARSLEY ENERGY OPERATIONS, LLC213,0002012-01-20
4PARSLEY ENERGY OPERATIONS, LLC113,0002012-01-18
3PARSLEY ENERGY OPERATIONS, LLC112,0002011-11-04
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