42-329-34481

Final Completion Horizontal

INTERSTATE B

MIDLAND County · District 8 · ENDEAVOR ENERGY RESOURCES L.P. · MIDLAND SW. (DEVONIAN)

Permits

Max Depth

12,500 ft

First Permit

2001-01-19

Latest Activity

2013-10-14

Lifespan

13 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2001-05-05

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2001-05

Last Production

2026-07

Operator History

Chain of Custody

CMS OIL AND GAS COMPANY 2001-2002→ PERENCO INC. 2002-2002→ PERENCO LLC 2002-2005→ LCX ENERGY, LLC 2005-2009→ ENDEAVOR ENERGY RESOURCES L.P. 2009-2024

Lease Production

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

Formation Tops (7) Elevation 2,821 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
SPRABERRY	8,400 ft	-5,579 ft
DEAN	9,225 ft	-6,404 ft
WOLFCAMP	9,394 ft	-6,573 ft
STRAWN	10,465 ft	-7,644 ft
ATOKA	10,772 ft	-7,951 ft
MISSISSIPPIAN	11,710 ft	-8,889 ft
DEVONIAN	11,920 ft	-9,099 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 (3)

Interval	Type
9,570–13,460 ft	Perforated
12,177–16,407 ft	Perforated
16,705–20,875 ft	Perforated

Casing (5)

Size	Set Depth	Cement
13.375"	350 ft	300 sx
9.625"	5,925 ft	1,860 sx
9.625"	5,925 ft	1,860 sx
7"	11,930 ft	950 sx
4.5"	13,555 ft	328 sx

Permit History (2)

#768953 Recompletion Final Completion

INTERSTATE B · 12,000 ft

2013-10-14

Spud 2013-11-17

#504227 Drill Final Completion

INTERSTATE "B" · 12,500 ft

2001-01-19

Spud 2001-02-28

Applications (2)

#768953 A ENDEAVOR ENERGY RESOURCES L.P.

received 2013-08-26

#504227 A CMS OIL AND GAS COMPANY

received 2001-01-18

Records & Logs

4 completion filings on record · 3 with log images at RRC.

W-2/G-1 2023-11-16

W-2/G-1 2014-08-20 log on file

W-2/G-1 2001-07-12 log on file

W-2/G-1 2001-09-05 log on file

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images 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 MIDLAND County.

Well Details

Well Number: 503H
Max Depth: 12,500 ft
Drill Type: Horizontal
County: MIDLAND
District: 8
Operator: ENDEAVOR ENERGY RESOURCES L.P.
Completed: 2001-05-05

Operator

Name: ENDEAVOR ENGY RES L.P
Location: MIDLAND
P-5 Status: Active (filed 2026-06-12)
Cum Oil (all leases): 507,205,629 bbl
Cum Gas (all leases): 70,424,421 mcf
Total Permits: 6,190