< leases

FOSTER -10-

Oil · District 08 · Lease #27143

Operator: STANOLIND PRODUCTION LLC

Fields: CONGER (PENN)

Cum Oil

12k BBL

Cum Gas

328k MCF

casinghead

Wells

2

Production

1993-01 — 2026-04

Peak Month

1997-06

Production History

Cum Oil: 11,673 BBL Cum Gas: 328,168 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

55 BBL/mo

Di (annual)

9.5%

b-factor

0.0

EUR

6,808 BBL

R-squared

0.313

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 (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-431-32856BURK ROYALTY CO., LTD.18,1501997-02-19
142-431-31056BURK ROYALTY CO., LTD.19,0901981-10-28