WELLBORN HEIRS

Oil · District 06 · Lease #12685

Operator: SHELBY, MICHAEL H.

Fields: WASKOM (WELLBORN SAND)

Cum Oil

21k BBL

Cum Gas

577k MCF

casinghead

Wells

1

Production

1993-01 — 2006-11

Peak Month

1993-03

Production History

Cum Oil: 21,229 BBL Cum Gas: 577,479 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

294 BBL/mo

Di (annual)

27.8%

b-factor

0.6

EUR

24,539 BBL

R-squared

0.744

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 SHELBY, MICHAEL H. 19 mo

1994-02 — 2024-12 HOPEWELL OPERATING, INC. 371 mo

1993-09 — 1994-01 SHELBY, MICHAEL H. 5 mo

1993-01 — 1993-08 RBD-SHELBY AGENCY 8 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-203-31827	SHELBY, MICHAEL H.	3	6,500	2007-04-26