THUNDERSTRUCK

Oil · District 8A · Lease #70420

Operator: STEWARD ENERGY II, LLC

Cum Oil

141k BBL

Cum Gas

138k MCF

casinghead

Wells

2

Production

2016-02 — 2020-05

Peak Month

2017-12

Production History

Cum Oil: 141,428 BBL Cum Gas: 137,945 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,511 BBL/mo

Di (annual)

28.0%

b-factor

0.0

EUR

193,481 BBL

R-squared

0.310

type

exponential

Operator History (from monthly production reports)

2017-04 — 2020-10 STEWARD ENERGY II, LLC 43 mo
2016-02 — 2017-03 APACHE CORPORATION 14 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1231HBURK ROYALTY CO., LTD.15,6002017-07-24
1HBURK ROYALTY CO., LTD.26,0002015-10-28