SANZENBACHER -F-

Oil · District 09 · Lease #10435

Operator: WILLOWBEND INVESTMENTS, INC.

Cum Oil

354k BBL

Cum Gas

38k MCF

casinghead

Wells

5

Production

1993-01 — 2026-04

Peak Month

1994-01

Production History

Cum Oil: 354,314 BBL Cum Gas: 37,761 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,640 BBL/mo

Di (annual)

7.4%

b-factor

0.0

EUR

258,836 BBL

R-squared

0.350

type

exponential

Operator History (from monthly production reports)

2009-08 — 2026-07 WILLOWBEND INVESTMENTS, INC. 204 mo
1998-10 — 2009-07 BURNS OPERATING LLC 130 mo
1993-01 — 1998-09 BURNS OPERATING 69 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1RWILLOWBEND INVESTMENTS, INC.16,1002023-09-13
7WILLOWBEND INVESTMENTS, INC.16,1001984-02-29
142-077-01820WILLOWBEND INVESTMENTS, INC.------
242-077-01819WILLOWBEND INVESTMENTS, INC.------
342-077-81271WILLOWBEND INVESTMENTS, INC.------