HALFF "63-E"

Oil · District 7C · Lease #11367

Operator: VANCO OIL & GAS CORP.

Cum Oil

156 BBL

Cum Gas

19 MCF

casinghead

Wells

1

Production

1993-01 — 1998-07

Peak Month

1997-09

Production History

Cum Oil: 156 BBL Cum Gas: 19 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

17 BBL/mo

Di (annual)

312.4%

b-factor

0.0

EUR

62 BBL

R-squared

0.782

type

exponential

Operator History (from monthly production reports)

1998-07 — 2010-03 VANCO OIL & GAS CORP. 141 mo
1993-01 — 1998-06 BELVAN CORP. 66 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2VANCO OIL & GAS CORP.21,6001985-05-10