< leases

COWDEN, J. F.

Oil · District 08 · Lease #240

Operator: XTO ENERGY INC.

Fields: ANDECTOR (WADDELL)

Cum Oil

41k BBL

Cum Gas

450k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1996-10

Production History

Cum Oil: 41,018 BBL Cum Gas: 450,120 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

259 BBL/mo

Di (annual)

29.0%

b-factor

0.9

EUR

27,262 BBL

R-squared

0.725

type

hyperbolic

Operator History (from monthly production reports)

2012-05 — 2026-07 DIAMOND S ENERGY COMPANY 171 mo
2004-11 — 2012-04 DABB ENERGY COMPANY 90 mo
2004-08 — 2004-10 XTO ENERGY INC. 3 mo
2002-06 — 2004-07 CHEVRON U. S. A. INC. 26 mo
1993-01 — 2002-05 TEXACO E & P INC. 113 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2 U42-135-02654MAVERICK PERMIAN LLC28,6001998-03-27
9 U42-135-02661DIAMOND S ENERGY COMPANY18,5921995-11-30
10 U42-135-02662DIAMOND S ENERGY COMPANY------
1642-135-02667DIAMOND S ENERGY COMPANY------