SHOFNER, W. A., ESTATE

Oil · District 02 · Lease #3339

Operator: TEXAS PETROLEUM INVESTMENT CO.

Cum Oil

31k BBL

Cum Gas

46k MCF

casinghead

Wells

5

Production

1993-01 — 2025-12

Peak Month

2009-12

Production History

Cum Oil: 30,903 BBL Cum Gas: 45,530 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

832 BBL/mo

Di (annual)

103.6%

b-factor

0.5

EUR

18,552 BBL

R-squared

0.826

type

hyperbolic

Operator History (from monthly production reports)

2022-02 — 2026-07 INITIAL ENERGY SERVICES, LLC 54 mo
2019-04 — 2022-01 REMORA MANAGEMENT, LLC 34 mo
2009-07 — 2019-03 FORMATION RESOURCES LLC 117 mo
2008-09 — 2009-06 LEGADO GULF COAST, LLC 10 mo
2003-09 — 2008-08 OSYKA PERMIAN, LLC 60 mo
1996-09 — 2003-08 TEXAS PETROLEUM INVESTMENT CO. 84 mo
1993-01 — 1996-08 QUINTANA PET. CORP. 44 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9INITIAL ENERGY SERVICES LLC15,8902009-11-20
4INITIAL ENERGY SERVICES, LLC15,7651997-07-14
1142-057-00488QUINTANA PET. CORP.------
1442-057-01312INITIAL ENERGY SERVICES LLC------
542-057-00481INITIAL ENERGY SERVICES LLC------