42-329-31410

Final Completion

COWDEN -40-

MIDLAND County · District 8 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)

Permits

Max Depth

9,839 ft

First Permit

1984-10-17

Latest Activity

1990-02-05

Lifespan

5 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2010-02-24

Shut-In

—

Plugged

2010-07-12

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: MLC CO., INC.

Resolved via: scheduling → PIONEER NATURAL RES. USA INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

PLAINS PETROLEUM OPERATING CO. 1993-1993→ MIDKIFF, JOHN 1993-2004→ QUAY VALLEY, INC. 2004-2006→ BIG STAR OIL & GAS, LLC 2006-2006→ PIONEER NATURAL RES. USA, INC. 2006-2025

Lease Production

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

Formation Tops (6) Elevation 2,801 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
CLEARFORK (Clear Fork)	7,250 ft	-4,449 ft
TOP OF CLEARFORK (Clear Fork)	7,280 ft	-4,479 ft
SPRABERRY	7,600 ft	-4,799 ft
TOP OF SPRABERRY (Spraberry)	7,994 ft	-5,193 ft
DEAN	8,570 ft	-5,769 ft
TOP OF WOLFCAMP (Wolfcamp)	9,160 ft	-6,359 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
7,644–8,038 ft	Perforated
8,247–8,626 ft	Perforated
9,337–9,435 ft	Perforated

Casing (4)

Size	Set Depth	Cement
13.375"	359 ft	425 sx
8.625"	4,402 ft	1,880 sx
5.5"	9,490 ft	530 sx
5.5"	—	100 sx

Permit History (2)

#367201 Recompletion Final Completion

COWDEN 40-1 · 8,800 ft

1990-02-05

#254823 Drill Final Completion

COWDEN 40 · 9,839 ft

1984-10-17

Applications (3)

#367201 A MLC CO., INC.

received 1989-12-04

#254823 A CONTINENTAL U S EXPLORATION, INC

received 1984-11-08

#254823 A CONTINENTAL U S EXPLORATION, INC

received 1984-10-17

Records & Logs

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

W-2/G-1 2010-03-29

W-2/G-1 1990-02-23 log on file

W-2/G-1 1990-03-05

W-2/G-1 1985-01-24

W-2/G-1 1985-02-09

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: 1
Max Depth: 9,839 ft
Drill Type: Vertical
County: MIDLAND
District: 8
Operator: PIONEER NATURAL RES. USA INC.
Completed: 2010-02-24

Operator

Name: PIONEER NATURAL RES. USA, INC
Location: Y SPRING
P-5 Status: Active (filed 2025-08-01)
Cum Oil (all leases): 1,771,882,421 bbl
Cum Gas (all leases): 1,763,727,021 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 15,435