DUVAL RANCH, SEC. #58

Oil · District 04 · Lease #1696

Operator: SPEED, F. MICHAEL, TRUSTEE

Fields: LUNDELL

Cum Oil

89k BBL

Cum Gas

21 MCF

casinghead

Wells

9

Production

1993-01 — 2026-04

Peak Month

2000-12

Production History

Cum Oil: 88,905 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

435 BBL/mo

Di (annual)

9.0%

b-factor

0.3

EUR

71,924 BBL

R-squared

0.733

type

hyperbolic

Operator History (from monthly production reports)

1998-09 — 2026-07 DEWBRE, JERRY C., TRUSTEE 335 mo
1993-01 — 1998-08 SPEED, F. MICHAEL, TRUSTEE 68 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
25DEWBRE, JERRY C., TRUSTEE11,6002004-02-17
24DEWBRE, JERRY C., TRUSTEE21,6002000-08-25
23DEWBRE, JERRY C., TRUSTEE11,6002000-05-25
22DEWBRE, JERRY C., TRUSTEE11,7501986-04-01
1042-131-05493DEWBRE, JERRY C., TRUSTEE------
1242-131-05495DEWBRE, JERRY C., TRUSTEE------
542-131-05488DEWBRE, JERRY C., TRUSTEE------
642-131-05489DEWBRE, JERRY C., TRUSTEE------
842-131-05491DEWBRE, JERRY C., TRUSTEE------