STUBBLEFIELD-MCCABE UNIT -A-

Oil · District 08 · Lease #27325

Operator: WILLIAMS, CLAYTON ENERGY, INC.

Cum Oil

9k BBL

Cum Gas

11k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

2017-07

Production History

Cum Oil: 9,025 BBL Cum Gas: 10,800 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

52 BBL/mo

Di (annual)

6.8%

b-factor

0.0

EUR

8,853 BBL

R-squared

0.369

type

exponential

Operator History (from monthly production reports)

2018-12 — 2026-07 SD ROYALE ENERGY, INC. 92 mo
2017-07 — 2018-11 LONGFELLOW ENERGY, LP 17 mo
2017-04 — 2017-06 NBL PERMIAN LLC 3 mo
2006-08 — 2017-03 WILLIAMS, CLAYTON ENERGY, INC. 128 mo
2002-04 — 2006-07 J V A OPERATING COMPANY, INC. 52 mo
1993-01 — 2002-03 MERIT ENERGY COMPANY 111 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SD ROYALE ENERGY, INC.16,5001981-05-05