UPTON -Q- FEE

Oil · District 7C · Lease #4121

Operator: SUMMIT PETROLEUM LLC

Cum Oil

106k BBL

Cum Gas

454k MCF

casinghead

Wells

3

Production

1993-01 — 2020-09

Peak Month

1993-07

Production History

Cum Oil: 105,807 BBL Cum Gas: 453,640 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

758 BBL/mo

Di (annual)

9.9%

b-factor

0.4

EUR

123,054 BBL

R-squared

0.838

type

hyperbolic

Operator History (from monthly production reports)

2021-02 — 2026-07 EXTEX OPERATING COMPANY 66 mo
2007-10 — 2021-01 LEGACY RESERVES OPERATING LP 160 mo
2007-05 — 2007-09 SUMMIT PETROLEUM LLC 5 mo
2001-04 — 2007-04 HENRY PETROLEUM LP 73 mo
1993-01 — 2001-03 HENRY PETROLEUM CORP. 99 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3EXTEX OPERATING COMPANY18,6001990-01-10
4EXTEX OPERATING COMPANY18,6001990-01-10
142-461-03034EXTEX OPERATING COMPANY------