GROUP 4000 UNIT "A"

Oil · District 7B · Lease #25971

Operator: XERIC OIL & GAS CORPORATION

Fields: GROUP (4000)

Cum Oil

249k BBL

Cum Gas

167k MCF

casinghead

Wells

16

Production

1993-01 — 2024-10

Peak Month

1993-10

Production History

Cum Oil: 248,800 BBL Cum Gas: 167,411 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,292 BBL/mo

Di (annual)

38.6%

b-factor

0.2

EUR

166,518 BBL

R-squared

0.929

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
1997-07 — 2001-08 ROBERTSON RESOURCES, INC. 50 mo
1996-11 — 1997-06 F&H ENERGY,LTD. 8 mo
1993-01 — 1996-10 O & G ENERGY, INC. 46 mo

Wells (16)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
15 AWINCHESTER ENERGY LLC24,2002023-11-13
27AWINCHESTER ENERGY LLC14,2001994-06-29
9AWINCHESTER ENERGY LLC14,2001991-06-07
16BWINCHESTER ENERGY LLC14,4001991-04-29
1AWINCHESTER ENERGY LLC14,4001991-02-12
8AWINCHESTER ENERGY LLC14,4001991-02-12
16 AWINCHESTER ENERGY LLC14,4001991-01-15
21 BWINCHESTER ENERGY LLC14,4001990-11-02
23AWINCHESTER ENERGY LLC14,4001990-11-02
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------
3442-353-01128WINCHESTER ENERGY LLC------
4042-353-01123WINCHESTER ENERGY LLC------