PATTERSON

Oil · District 7C · Lease #7988

Operator: HEC PETROLEUM, INC.

Cum Oil

21k BBL

Cum Gas

129k MCF

casinghead

Wells

4

Production

1993-01 — 2006-01

Peak Month

1995-12

Production History

Cum Oil: 20,540 BBL Cum Gas: 129,088 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

289 BBL/mo

Di (annual)

39.5%

b-factor

0.4

EUR

14,075 BBL

R-squared

0.807

type

hyperbolic

Operator History (from monthly production reports)

2006-04 — 2007-03 CHEVRON MIDCONTINENT, L.P. 12 mo
2002-01 — 2006-03 HEC PETROLEUM, INC. 51 mo
1994-12 — 2001-12 HALLWOOD PETROLEUM, INC. 85 mo
1993-01 — 1994-11 HALLWOOD ENERGY CORPORATION 23 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
4CHEVRON MIDCONTINENT L.P.18,1501979-08-20
3CHEVRON MIDCONTINENT L.P.18,1501979-08-06
2CHEVRON MIDCONTINENT L.P.18,1001979-07-30
1CHEVRON MIDCONTINENT L.P.18,0001979-07-17