SIEBER

Oil · District 8A · Lease #70557

Operator: STEWARD ENERGY II, LLC

Cum Oil

1.2M BBL

Cum Gas

2.3M MCF

casinghead

Wells

5

Production

2017-01 — 2026-04

Peak Month

2019-01

Production History

Cum Oil: 1,193,795 BBL Cum Gas: 2,263,494 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

16,535 BBL/mo

Di (annual)

12.3%

b-factor

0.0

EUR

1,609,319 BBL

R-squared

0.472

type

exponential

Operator History (from monthly production reports)

2025-03 — 2026-07 BURK ROYALTY CO., LTD. 17 mo
2022-04 — 2025-02 STEWARD ENERGY II, LLC 35 mo
2017-01 — 2022-03 CUSTER & WRIGHT OPERATING, INC. 63 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
45HBURK ROYALTY CO., LTD.15,6002022-12-28
6HBURK ROYALTY CO., LTD.110,1452018-04-26
5HBURK ROYALTY CO., LTD.110,3552018-04-25
4HBURK ROYALTY CO., LTD.110,6402017-09-25
3HBURK ROYALTY CO., LTD.110,3002016-06-09