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STERLING -S- FEE

Oil · District 08 · Lease #57979

Operator: BURK ROYALTY CO., LTD.

Fields: SPRABERRY (TREND AREA)

Cum Oil

16k BBL

Cum Gas

30k MCF

casinghead

Wells

7

Production

2020-11 — 2026-04

Peak Month

2022-04

Production History

Cum Oil: 15,960 BBL Cum Gas: 29,853 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

429 BBL/mo

Di (annual)

21.6%

b-factor

0.0

EUR

23,839 BBL

R-squared

0.464

type

exponential

Operator History (from monthly production reports)

2020-11 — 2026-07 BURK ROYALTY CO., LTD. 68 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-431-30983BURK ROYALTY CO., LTD.28,3002010-07-13
442-431-31555BURK ROYALTY CO., LTD.28,1202009-07-01
342-431-31550BURK ROYALTY CO., LTD.28,0952008-10-22
642-431-32491BURK ROYALTY CO., LTD.28,1552008-03-25
842-431-33206BURK ROYALTY CO., LTD.18,1002007-09-06
542-431-31839BURK ROYALTY CO., LTD.28,1002007-03-05
742-431-32480BURK ROYALTY CO., LTD.28,1502007-03-05