RUBBER NECK 358

Oil · District 8A · Lease #71247

Operator: STEWARD ENERGY II, LLC

Cum Oil

433k BBL

Cum Gas

451k MCF

casinghead

Wells

3

Production

2022-03 — 2026-04

Peak Month

2022-12

Production History

Cum Oil: 432,968 BBL Cum Gas: 451,234 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

26,066 BBL/mo

Di (annual)

173.7%

b-factor

0.9

EUR

693,289 BBL

R-squared

0.936

type

hyperbolic

Operator History (from monthly production reports)

2025-03 — 2026-07 BURK ROYALTY CO., LTD. 17 mo
2022-03 — 2025-02 STEWARD ENERGY II, LLC 36 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1HBURK ROYALTY CO., LTD.15,6002022-08-19
2HBURK ROYALTY CO., LTD.15,6002022-08-19
3HBURK ROYALTY CO., LTD.15,6002022-01-21