< leases

COWDEN RANCH OIL UNIT "49"

Oil · District 08 · Lease #37210

Operator: VANGUARD OPERATING, LLC

Fields: ROEPKE (UPPER DEVONIAN)

Cum Oil

173k BBL

Cum Gas

177k MCF

casinghead

Wells

1

Production

2003-11 — 2026-04

Peak Month

2003-12

Production History

Cum Oil: 172,889 BBL Cum Gas: 176,948 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,263 BBL/mo

Di (annual)

99.6%

b-factor

1.1

EUR

226,783 BBL

R-squared

0.860

type

hyperbolic

Operator History (from monthly production reports)

2025-08 — 2026-07 R3 OPERATING CORPORATION 12 mo
2025-04 — 2025-07 T2 OPERATING CORPORATION 4 mo
2021-02 — 2025-03 BOAZ ENERGY II OPERATING, LLC 50 mo
2019-09 — 2021-01 GRIZZLY OP OF DELAWARE, LLC 17 mo
2015-10 — 2019-08 VANGUARD OPERATING, LLC 47 mo
2011-12 — 2015-09 LRE OPERATING, LLC 46 mo
2008-05 — 2011-11 LIME ROCK RESOURCES A, L.P. 43 mo
2003-11 — 2008-04 SOUTHWESTERN ENERGY PROD. CO. 54 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
342-103-34945R3 OPERATING CORPORATION16,6002003-10-31