< leases

L. FOSTER-4-

Oil · District 08 · Lease #26546

Operator: STANOLIND PRODUCTION LLC

Fields: CONGER (PENN)

Cum Oil

36k BBL

Cum Gas

1.3M MCF

casinghead

Wells

5

Production

1993-01 — 2026-04

Peak Month

1994-01

Production History

Cum Oil: 35,765 BBL Cum Gas: 1,282,525 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

282 BBL/mo

Di (annual)

13.6%

b-factor

0.0

EUR

24,795 BBL

R-squared

0.555

type

exponential

Operator History (from monthly production reports)

2022-01 — 2026-07 BURK ROYALTY CO., LTD. 55 mo
2021-01 — 2021-12 SLANT OPERATING, LLC 12 mo
2018-07 — 2020-12 STANOLIND PRODUCTION LLC 30 mo
2014-08 — 2018-06 EQT PRODUCTION TEXAS, LLC 47 mo
1998-09 — 2014-07 RANGE PRODUCTION COMPANY 191 mo
1997-03 — 1998-08 LOMAK PRODUCTION COMPANY 18 mo
1993-01 — 1997-02 AMERICAN COMETRA, INC. 50 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
742-431-32941BURK ROYALTY CO., LTD.18,1501998-07-23
642-431-32828BURK ROYALTY CO., LTD.18,5001996-06-17
442-431-32712BURK ROYALTY CO., LTD.18,5001993-10-29
342-431-31052BURK ROYALTY CO., LTD.17,9751981-10-06
242-431-30907BURK ROYALTY CO., LTD.18,2001980-09-11