42-371-34132

Final Completion

LONGFELLOW 600 3

PECOS County · District 8 · RIATA ENERGY INC. · PINON (OVERTHRUST)

Permits

Max Depth

9,300 ft

First Permit

1982-12-23

Latest Activity

1999-11-10

Lifespan

17 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1983-06-03

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: RIATA ENERGY INC. ≠ Production: LONGFELLOW ENERGY, LP (reported 2026-04)

Resolved via: production → LONGFELLOW ENERGY, LP

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

FINA OIL & CHEMICAL COMPANY 1993-1998→ RIATA ENERGY, INC. 1998-2006→ SANDRIDGE ENERGY, INC. 2006-2009→ SANDRIDGE EXPL. AND PROD., LLC 2009-2016→ OCCIDENTAL W TX OVERTHRUST, INC. 2016-2021→ LONGFELLOW ENERGY, LP 2022-2026

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (9) Elevation 4,275 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CRETACEOUS	1 ft	+4,274 ft
LEONARD	1,040 ft	+3,235 ft
WOLFCAMP	1,850 ft	+2,425 ft
TEXNUS	3,335 ft	+940 ft
DIMPLE	5,305 ft	-1,030 ft
TESNUS	5,550 ft	-1,275 ft
ATOKA	7,190 ft	-2,915 ft
2ND CABALLOS	7,440 ft	-3,165 ft
3RD CABALLOS	8,325 ft	-4,050 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (4)

Interval	Type
4,410–4,470 ft	Perforated
4,580–4,636 ft	Perforated
4,700–4,766 ft	Perforated
8,601–8,727 ft	Perforated

Casing (8)

Size	Set Depth	Cement
13.625"	1,400 ft	1,925 sx
13.375"	1,401 ft	—
8.625"	4,200 ft	710 sx
8.625"	4,208 ft	—
5.5"	5,802 ft	400 sx
5.5"	7,500 ft	410 sx
5.5"	7,553 ft	—
3.5"	9,220 ft	100 sx

Permit History (2)

#489395 Recompletion Final Completion

LONGFELLOW 600 3 · 9,300 ft

1999-11-10

Spud 1999-07-19

#181472 Drill Final Completion

PURPLE, J. A. 3 · 7,500 ft

1982-12-23

Spud 1983-01-10

Applications (3)

#489395 A RIATA ENERGY, INC.

received 1999-11-10

#181472 A TENNECO OIL CO.

received 1983-11-10

#181472 A TENNECO OIL CO.

received 1982-12-23

Records & Logs

4 completion filings on record · 1 with log images at RRC.

W-2/G-1 2000-02-17 log on file

W-2/G-1 2000-04-10

W-2/G-1 1983-09-07

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in PECOS County.

Well Details

Well Number: 1
Max Depth: 9,300 ft
Drill Type: Vertical
County: PECOS
District: 8
Operator: RIATA ENERGY INC.
Completed: 1983-06-03

Operator

Name: RIATA ENGY, INC
Location: OKLAHOMA CI, TY
P-5 Status: Delinquent (filed 2006-08-21)
Cum Oil (all leases): 916,339 bbl
Cum Gas (all leases): 282,157,564 mcf
Total Permits: 588