GOLDSMITH, NORTH DEVONIAN UNIT

Oil · District 08 · Lease #20194

Operator: STEPHENS, AUTRY C.

Cum Oil

476k BBL

Cum Gas

303k MCF

casinghead

Wells

25

Production

1993-01 — 2026-04

Peak Month

1993-06

Production History

Cum Oil: 475,504 BBL Cum Gas: 303,129 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,361 BBL/mo

Di (annual)

15.5%

b-factor

0.0

EUR

492,238 BBL

R-squared

0.803

type

exponential

Operator History (from monthly production reports)

2025-11 — 2026-07 OCTANE ENERGY OPERATING, LLC 9 mo
2023-11 — 2025-10 FIVESTONES ENERGY LLC 24 mo
2000-09 — 2023-10 ENDEAVOR ENERGY RESOURCES L.P. 278 mo
1996-02 — 2000-08 STEPHENS, AUTRY C. 55 mo
1993-01 — 1996-01 AMOCO PRODUCTION COMPANY 37 mo

Wells (25)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
30OCTANE ENERGY OPERATING, LLC48,6002024-05-22
4OCTANE ENERGY OPERATING, LLC17,7902024-05-06
24OCTANE ENERGY OPERATING, LLC17,8502024-04-16
17OCTANE ENERGY OPERATING, LLC17,9702024-02-02
9WOCTANE ENERGY OPERATING, LLC18,3501995-06-22
29OCTANE ENERGY OPERATING, LLC18,6001985-06-26
10W42-135-08711OCTANE ENERGY OPERATING, LLC------
11W42-135-03219OCTANE ENERGY OPERATING, LLC------
1242-135-03151OCTANE ENERGY OPERATING, LLC------
13W42-135-03152OCTANE ENERGY OPERATING, LLC------
1442-135-03178OCTANE ENERGY OPERATING, LLC------
18W42-135-21199OCTANE ENERGY OPERATING, LLC------
1942-135-21200OCTANE ENERGY OPERATING, LLC------
1W42-135-08562OCTANE ENERGY OPERATING, LLC------
242-135-83776OCTANE ENERGY OPERATING, LLC------
2042-135-20236OCTANE ENERGY OPERATING, LLC------
21W42-135-21299OCTANE ENERGY OPERATING, LLC------
22W42-135-20238OCTANE ENERGY OPERATING, LLC------
23W42-135-21333OCTANE ENERGY OPERATING, LLC------
25W42-135-21382OCTANE ENERGY OPERATING, LLC------
2642-135-21386OCTANE ENERGY OPERATING, LLC------
3W42-135-03148OCTANE ENERGY OPERATING, LLC------
542-135-03159OCTANE ENERGY OPERATING, LLC------
642-135-03157OCTANE ENERGY OPERATING, LLC------
8W42-135-03218OCTANE ENERGY OPERATING, LLC------