HALFF & OPPENHEIMER -C-

Oil · District 01 · Lease #4586

Operator: WILLIAMS KOLB & LINDENBORN, INC.

Cum Oil

27k BBL

Cum Gas

236k MCF

casinghead

Wells

5

Production

1993-01 — 2015-09

Peak Month

1995-11

Production History

Cum Oil: 27,149 BBL Cum Gas: 236,457 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

333 BBL/mo

Di (annual)

164.1%

b-factor

0.4

EUR

3,933 BBL

R-squared

0.310

type

hyperbolic

Operator History (from monthly production reports)

2018-02 — 2026-07 MAVERICK ENERGY GROUP, INC. 102 mo
2016-09 — 2018-01 JENCO PETROLEUM CORPORATION 17 mo
2012-03 — 2016-08 JENEX PETROLEUM CORPORATION 54 mo
2000-07 — 2012-02 SPUR OPERATING CO. 140 mo
1998-06 — 2000-06 WILLIAMS KOLB & LINDENBORN, INC. 25 mo
1995-04 — 1998-05 S & L OIL FIELD SERVICES 38 mo
1994-08 — 1995-03 COLT OPERATING CORPORATION 8 mo
1993-04 — 1994-07 FRIO SWD, INC. 16 mo
1993-01 — 1993-03 VALENCE OPERATING COMPANY 3 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1MAVERICK ENERGY GROUP INC.16,0001984-06-19
242-163-30134MAVERICK ENERGY GROUP INC.------
342-163-30180LAWBAR PETROLEUM INC.------
3C42-163-30180LAWBAR PETROLEUM INC.------
442-163-30386MAVERICK ENERGY GROUP INC.------