< leases

COWDEN, J. F.

Oil · District 08 · Lease #237

Operator: XTO ENERGY INC.

Fields: ANDECTOR (MCKEE)

Cum Oil

78k BBL

Cum Gas

662k MCF

casinghead

Wells

4

Production

1993-01 — 2026-04

Peak Month

1998-08

Production History

Cum Oil: 78,310 BBL Cum Gas: 661,692 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

610 BBL/mo

Di (annual)

19.2%

b-factor

0.6

EUR

68,684 BBL

R-squared

0.654

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
15 U42-135-08457DIAMOND S ENERGY COMPANY17,9102001-12-03
28 U42-135-02679MAVERICK PERMIAN LLC15,5272001-08-29
242-135-02654MAVERICK PERMIAN LLC28,6001998-03-27
942-135-02661DIAMOND S ENERGY COMPANY18,5921995-11-30