HALFF "62"

Oil · District 7C · Lease #7991

Operator: VANCO OIL & GAS CORP.

Cum Oil

11k BBL

Cum Gas

689 MCF

casinghead

Wells

5

Production

1993-01 — 2019-04

Peak Month

1993-03

Production History

Cum Oil: 10,810 BBL Cum Gas: 689 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

101 BBL/mo

Di (annual)

12.2%

b-factor

0.1

EUR

10,862 BBL

R-squared

0.819

type

hyperbolic

Operator History (from monthly production reports)

2020-11 — 2026-07 MOSAIC TEXAS LLC 69 mo
1998-07 — 2020-10 VANCO OIL & GAS CORP. 268 mo
1993-01 — 1998-06 BELVAN CORP. 66 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6MOSAIC TEXAS LLC11,7001981-07-03
4MOSAIC TEXAS LLC11,7001981-03-02
5MOSAIC TEXAS LLC11,7001981-03-02
1MOSAIC TEXAS LLC11,7001980-04-28
2MOSAIC TEXAS LLC11,8001979-02-09