SANDMAN 470

Oil · District 8A · Lease #70757

Operator: STEWARD ENERGY II, LLC

Cum Oil

879k BBL

Cum Gas

2.8M MCF

casinghead

Wells

4

Production

2018-04 — 2026-04

Peak Month

2019-11

Production History

Cum Oil: 879,360 BBL Cum Gas: 2,751,720 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

11,607 BBL/mo

Di (annual)

12.9%

b-factor

0.0

EUR

1,080,656 BBL

R-squared

0.333

type

exponential

Operator History (from monthly production reports)

2025-03 — 2026-07 BURK ROYALTY CO., LTD. 17 mo
2018-04 — 2025-02 STEWARD ENERGY II, LLC 83 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4HBURK ROYALTY CO., LTD.15,6002023-02-28
5HBURK ROYALTY CO., LTD.15,6002019-09-12
6HBURK ROYALTY CO., LTD.15,6002019-02-28
3HBURK ROYALTY CO., LTD.15,6002018-01-17