GROUP 4000 UNIT

Oil · District 7B · Lease #10432

Operator: XERIC OIL & GAS CORPORATION

Fields: GROUP (4000)

Cum Oil

92k BBL

Cum Gas

68k MCF

casinghead

Wells

14

Production

1993-01 — 2017-07

Peak Month

1995-03

Production History

Cum Oil: 91,731 BBL Cum Gas: 67,921 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,212 BBL/mo

Di (annual)

20.3%

b-factor

0.1

EUR

79,305 BBL

R-squared

0.664

type

hyperbolic

Operator History (from monthly production reports)

2022-07 — 2026-07 WINCHESTER ENERGY, LLC 49 mo
2015-05 — 2022-06 W & W PRODUCTION, LLC 86 mo
2007-07 — 2015-04 MIDWESTERN ENERGY 94 mo
2006-06 — 2007-06 DELCO OPERATING COMPANY LP 13 mo
2005-10 — 2006-05 ALEGRE ENERGY, INC. 8 mo
2004-11 — 2005-09 ALEGRE ENERGY OPERATING, LP 11 mo
2003-12 — 2004-10 ALEGRE ENERGY, INC. 11 mo
2001-09 — 2003-11 XERIC OIL & GAS CORPORATION 27 mo
1995-03 — 2001-08 ROBERTSON RESOURCES, INC. 78 mo
1995-01 — 1995-02 CHISHOLM EXPLORATION 2 mo
1993-01 — 1994-12 GENIE CORPORATION 24 mo

Wells (14)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
43ROBERTSON RESOURCES INC.26,6501996-07-02
8AWINCHESTER ENERGY LLC14,4001991-02-12
22AWINCHESTER ENERGY LLC14,2001990-08-29
1242-353-00536WINCHESTER ENERGY LLC------
1442-353-00534WINCHESTER ENERGY LLC------
1642-353-00591WINCHESTER ENERGY LLC------
2142-353-00533WINCHESTER ENERGY LLC------
2942-353-01137WINCHESTER ENERGY LLC------
3042-353-01135WINCHESTER ENERGY LLC------
3142-353-01127WINCHESTER ENERGY LLC------
3442-353-01128WINCHESTER ENERGY LLC------
3842-353-01136WINCHESTER ENERGY LLC------
3942-353-80624WINCHESTER ENERGY LLC------
4042-353-01123WINCHESTER ENERGY LLC------