ZANT "A"

Oil · District 08 · Lease #40348

Operator: XTO ENERGY INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

57k BBL

Cum Gas

355k MCF

casinghead

Wells

1

Production

2010-06 — 2019-08

Peak Month

2010-09

Production History

Cum Oil: 57,458 BBL Cum Gas: 355,311 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,604 BBL/mo

Di (annual)

97.7%

b-factor

1.3

EUR

106,163 BBL

R-squared

0.838

type

hyperbolic

Operator History (from monthly production reports)

2014-11 — 2020-04 XTO ENERGY INC. 66 mo

2014-07 — 2014-10 LINN OPERATING, INC. 4 mo

2011-03 — 2014-06 BERRY OIL COMP. 40 mo

2010-06 — 2011-02 PIEDRA OPERATING, LLC 9 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1112	42-173-33628	XTO ENERGY INC.	1	11,500	2010-04-12