COREY "A"

Oil · District 7C · Lease #12458

Operator: XTO ENERGY INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

21k BBL

Cum Gas

292k MCF

casinghead

Wells

1

Production

1993-01 — 2017-10

Peak Month

1995-01

Production History

Cum Oil: 20,519 BBL Cum Gas: 292,443 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

134 BBL/mo

Di (annual)

7.3%

b-factor

0.0

EUR

21,386 BBL

R-squared

0.547

type

exponential

Operator History (from monthly production reports)

2017-09 — 2020-05 XTO ENERGY INC. 33 mo

1997-09 — 2017-08 PIONEER NATURAL RES. USA, INC. 240 mo

1995-03 — 1997-08 PARKER & PARSLEY DEVELOPMENT L.P 30 mo

1993-01 — 1995-02 PARKER & PARSLEY DEVELOPMENT CO. 26 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-461-32754	XTO ENERGY INC.	1	9,350	1988-02-12