'L' FEE-CALVERLEY UNIT

Oil · District 08 · Lease #33979

Operator: XTO ENERGY INC.

Fields: BLALOCK LAKE, SE (WOLFCAMP)

Cum Oil

753k BBL

Cum Gas

1.0M MCF

casinghead

Wells

1

Production

1993-10 — 2019-11

Peak Month

1995-01

Production History

Cum Oil: 753,246 BBL Cum Gas: 1,039,956 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,136 BBL/mo

Di (annual)

21.6%

b-factor

0.7

EUR

795,121 BBL

R-squared

0.854

type

hyperbolic

Operator History (from monthly production reports)

2004-08 — 2020-11 XTO ENERGY INC. 196 mo

2002-06 — 2004-07 CHEVRON U. S. A. INC. 26 mo

1993-10 — 2002-05 TEXACO E & P INC. 104 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-173-32347	XTO ENERGY INC.	1	8,300	1993-08-30