JOHN

Oil · District 8A · Lease #61386

Operator: RUWCO OIL AND GAS CORP.

Cum Oil

483k BBL

Cum Gas

411k MCF

casinghead

Wells

4

Production

1993-01 — 2026-03

Peak Month

1993-03

Production History

Cum Oil: 482,669 BBL Cum Gas: 411,497 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,668 BBL/mo

Di (annual)

84.4%

b-factor

1.3

EUR

483,685 BBL

R-squared

0.806

type

hyperbolic

Operator History (from monthly production reports)

2025-03 — 2026-07 FLAT TOP OPERATING, LLC 17 mo
2021-09 — 2025-02 ROBERTSON RESOURCES, INC. 42 mo
1998-01 — 2021-08 RUWCO OIL AND GAS CORP. 284 mo
1993-01 — 1997-12 DHC, INC. 60 mo

Wells (4)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
6FLAT TOP OPERATING, LLC17,0001987-06-10
4FLAT TOP OPERATING, LLC17,0001980-07-31
142-415-30411FLAT TOP OPERATING, LLC------
342-415-30816FLAT TOP OPERATING, LLC------