STS 'A'

Oil · District 1 · Lease #17556

Operator: WELHAUSEN OPERATING COMPANY, LP

Cum Oil

8k BBL

Cum Gas

0 MCF

Wells

8

Production

2013-12 — 2018-06

Peak Month

2014-06

Production History

Cum Oil: 7,731 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

657 BBL/mo

Di (annual)

132.1%

b-factor

0.0

EUR

5,967 BBL

R-squared

0.779

type

exponential

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1 SWELHAUSEN OPERATING COMPANY, LP310,0002018-12-20
2SWELHAUSEN OPERATING COMPANY, LP210,0002017-07-12
10HSIERRA RESOURCES, LLC19,4502015-07-23
8HSIERRA RESOURCES, LLC19,3602015-06-02
7HSIERRA RESOURCES, LLC19,8002015-04-13
6HSIERRA RESOURCES, LLC19,8002015-03-09
5HSIERRA RESOURCES, LLC19,8002014-10-31
4 HWELHAUSEN OPERATING COMPANY, LP110,0002014-07-01
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