WILLIAMS

Oil · District 06 · Lease #13781

Operator: XTO ENERGY INC.

Cum Oil

53k BBL

Cum Gas

43k MCF

casinghead

Wells

1

Production

1998-01 — 2026-04

Peak Month

1998-08

Production History

Cum Oil: 52,529 BBL Cum Gas: 42,555 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

222 BBL/mo

Di (annual)

3.5%

b-factor

0.0

EUR

62,368 BBL

R-squared

0.338

type

exponential

Operator History (from monthly production reports)

2025-10 — 2026-07 EXPRESS ENERGY GROUP, LLC 10 mo
2014-12 — 2025-09 OKIE OPERATING COMPANY, LTD. 130 mo
2005-06 — 2014-11 XTO ENERGY INC. 114 mo
2005-01 — 2005-05 PXP TEXAS INC. 5 mo
2003-07 — 2004-12 PXP GULF COAST INC. 18 mo
2001-02 — 2003-06 3TEC ENERGY CORPORATION 29 mo
1999-04 — 2001-01 CLASSIC OIL & GAS, INC. 22 mo
1998-01 — 1999-03 HOWELL & SANDLIN, INC. 15 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1EXPRESS ENERGY GROUP, LLC16,2001997-07-31