HORTON BALLARD

Oil · District 1 · Lease #10663

Operator: WELHAUSEN OPERATING COMPANY, LP

Cum Oil

433k BBL

Cum Gas

0 MCF

Wells

9

Production

1993-01 — 2026-03

Peak Month

2008-08

Production History

Cum Oil: 432,619 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,422 BBL/mo

Di (annual)

17.5%

b-factor

0.1

EUR

184,282 BBL

R-squared

0.918

type

hyperbolic

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11WELHAUSEN OPERATING COMPANY, LP111,0002008-04-07
9WELHAUSEN OPERATING COMPANY, LP310,0002006-07-20
10WELHAUSEN OPERATING COMPANY, LP110,0002006-03-29
6PENTAD DEVELOPMENT CORP. (A)19,9001985-12-30
3PENTAD DEVELOPMENT CORP. (A)19,9001985-12-18
1PENTAD DEVELOPMENT CORP. (A)19,9001985-10-29
8PENTAD DEVELOPMENT CORP. (A)19,9001985-10-29
2PORTAL DRILLING COMPANY19,9001985-10-11
5PORTAL DRILLING COMPANY19,9001985-10-11
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