PIERSON, WILLIAM ESTATE

Oil · District 11 · Lease #18452

Operator: XTO ENERGY INC.

Cum Oil

935k BBL

Cum Gas

0 MCF

Wells

7

Production

1993-01 — 2026-03

Peak Month

1997-01

Production History

Cum Oil: 935,377 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

4,174 BBL/mo

Di (annual)

13.3%

b-factor

2.0

EUR

1,047,873 BBL

R-squared

0.777

type

hyperbolic

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11XTO ENERGY INC.111,0452009-05-27
23CROSS TIMBERS OPERATING COMPANY15,2001995-05-03
21CROSS TIMBERS OPERATING COMPANY15,2001994-12-01
1SHELL OIL COMPANY17,7271978-03-24
642-165-02467--------
742-165-02468--------
7 U42-165-02468--------
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