DSPAIN -C-

Oil · District 14 · Lease #1428

Operator: STEPHENS & JOHNSON OPERATING CO.

Cum Oil

148k BBL

Cum Gas

0 MCF

Wells

8

Production

1993-01 — 2026-03

Peak Month

2012-03

Production History

Cum Oil: 148,235 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

891 BBL/mo

Di (annual)

9.6%

b-factor

0.0

EUR

111,073 BBL

R-squared

0.540

type

exponential

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
10KELLERVILLE OPERATING, LLC12,7002012-03-15
9KELLERVILLE OPERATING, LLC12,7002011-04-21
7KELLERVILLE OPERATING, LLC12,7002009-09-18
8KELLERVILLE OPERATING, LLC12,7002009-09-18
2CHEVRON U. S. A. INC.12,6501987-08-21
3CHEVRON U. S. A. INC.12,6001987-06-17
6CHEVRON U. S. A. INC.12,6001987-06-17
542-483-80759--------
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