SUMNER, J.C.&FRANCIS A.,HEIRS OF

Oil · District 09 · Lease #14498

Operator: WESTPORT OIL AND GAS COMPANY, LP

Cum Oil

65k BBL

Cum Gas

30 MCF

casinghead

Wells

3

Production

1993-01 — 2026-04

Peak Month

2019-05

Production History

Cum Oil: 64,575 BBL Cum Gas: 30 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

601 BBL/mo

Di (annual)

34.0%

b-factor

0.0

EUR

21,171 BBL

R-squared

0.849

type

exponential

Operator History (from monthly production reports)

2022-05 — 2026-07 BURK ROYALTY CO., LTD. 51 mo
2018-03 — 2022-04 SLANT OPERATING, LLC 50 mo
2011-02 — 2018-02 URBAN OIL & GAS GROUP, LLC 85 mo
2006-08 — 2011-01 IPR ENERGY PARTNERS, L.P. 54 mo
2003-04 — 2006-07 CHANCE OIL CO., INC. 40 mo
2002-03 — 2003-03 WESTPORT OIL AND GAS COMPANY, LP 13 mo
1998-09 — 2002-02 BELCO ENERGY CORP. 42 mo
1997-01 — 1998-08 CODA ENERGY, INC. 20 mo
1993-01 — 1996-12 HUBER, J. M., CORPORATION 48 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5BURK ROYALTY CO., LTD.19,0002019-02-26
1BURK ROYALTY CO., LTD.16,6351979-04-03
242-487-04884BURK ROYALTY CO., LTD.------