LANGE -A-

Oil · District 01 · Lease #11827

Operator: XTO ENERGY INC.

Fields: A.W.P. (OLMOS)

Cum Oil

24k BBL

Cum Gas

230k MCF

casinghead

Wells

1

Production

1993-01 — 2026-04

Peak Month

1999-08

Production History

Cum Oil: 24,484 BBL Cum Gas: 229,642 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

127 BBL/mo

Di (annual)

5.8%

b-factor

0.0

EUR

25,009 BBL

R-squared

0.545

type

exponential

Operator History (from monthly production reports)

2007-08 — 2026-07 XTO ENERGY INC. 228 mo

2001-12 — 2007-07 DOMINION OKLAHOMA TEXAS E&P, INC 68 mo

1997-11 — 2001-11 DREYFUS, LOUIS NATURAL GAS CORP 49 mo

1993-01 — 1997-10 AMERICAN EXPLORATION COMPANY 58 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-311-32540	XTO ENERGY INC.	1	10,500	1987-04-14