BLALOCK C

Oil · District 08 · Lease #40539

Operator: XTO ENERGY INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

242k BBL

Cum Gas

1.4M MCF

casinghead

Wells

3

Production

2010-10 — 2026-04

Peak Month

2014-03

Production History

Cum Oil: 242,312 BBL Cum Gas: 1,422,572 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,879 BBL/mo

Di (annual)

32.0%

b-factor

0.0

EUR

182,779 BBL

R-squared

0.661

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

2010-10 — 2011-02 PIEDRA OPERATING, LLC 5 mo

Wells (3)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1212	42-173-35091	XTO ENERGY INC.	1	12,000	2012-06-14
1211	42-173-35024	XTO ENERGY INC.	1	12,000	2012-06-04
1210	42-173-33625	XTO ENERGY INC.	1	11,000	2010-03-09