BLALOCK

Oil · District 08 · Lease #39648

Operator: XTO ENERGY INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

121k BBL

Cum Gas

863k MCF

casinghead

Wells

3

Production

2009-10 — 2026-04

Peak Month

2014-03

Production History

Cum Oil: 120,842 BBL Cum Gas: 863,228 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,522 BBL/mo

Di (annual)

19.8%

b-factor

0.0

EUR

92,232 BBL

R-squared

0.599

type

exponential

Operator History (from monthly production reports)

2014-11 — 2026-07 XTO ENERGY INC. 141 mo

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

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

2009-10 — 2011-02 PIEDRA OPERATING, LLC 17 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1214	42-173-35306	XTO ENERGY INC.	1	12,000	2012-10-12
1201	42-173-34271	XTO ENERGY INC.	1	12,000	2011-06-07
1216	42-173-33511	XTO ENERGY INC.	1	11,000	2009-06-02