DUKE

Oil · District 01 · Lease #11542

Operator: LETY OIL CO.

Fields: TENNEY CREEK

Cum Oil

14k BBL

Cum Gas

188 MCF

casinghead

Wells

2

Production

1993-01 — 2026-02

Peak Month

1993-08

Production History

Cum Oil: 13,786 BBL Cum Gas: 188 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

99 BBL/mo

Di (annual)

9.9%

b-factor

0.2

EUR

13,980 BBL

R-squared

0.683

type

hyperbolic

Operator History (from monthly production reports)

2007-03 — 2026-07 CASTILLO OIL COMPANY LLC 233 mo
2002-09 — 2007-02 CASTILLO OIL CO. 54 mo
1995-09 — 2002-08 LETY OIL CO. 84 mo
1993-05 — 1995-08 DUNKIN, RAY L. 28 mo
1993-01 — 1993-04 LANIER RESOURCES, INC. 4 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4CASTILLO OIL COMPANY LLC12,8001986-04-28
3CASTILLO OIL COMPANY LLC12,8001986-03-28