SHIRK, J. H., EST.

Oil · District 7C · Lease #3334

Operator: XOG OPERATING LLC

Fields: FRADEAN (STRAWN)

Cum Oil

59k BBL

Cum Gas

335k MCF

casinghead

Wells

1

Production

1993-01 — 2017-10

Peak Month

1998-05

Production History

Cum Oil: 59,224 BBL Cum Gas: 335,183 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

966 BBL/mo

Di (annual)

38.5%

b-factor

0.5

EUR

54,524 BBL

R-squared

0.822

type

hyperbolic

Operator History (from monthly production reports)

2016-04 — 2026-07 BAYLOR OPERATING, LLC 124 mo

2005-07 — 2016-03 XOG OPERATING LLC 129 mo

1994-07 — 2005-06 XERIC OIL & GAS CORPORATION 132 mo

1994-02 — 1994-06 CAPPS, RANDALL 5 mo

1993-01 — 1994-01 CHISOS OPERATING, INC. 13 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
2	42-461-30598	KASPAR A. G.	1	10,075	1980-01-10