42-285-31843

TREPTOW OU 2

LAVACA County · District 2 · PIONEER NATURAL RES. USA, INC.

Permits

Max Depth

10,450 ft

First Permit

1984-08-09

Latest Activity

2012-05-10

Lifespan

28 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2014-08

Operator History

Chain of Custody

HOWELL DRILLING, INC. 1993-1993→ PARKER & PARSLEY DEVELOPMENT CO. 1994-1995→ PARKER & PARSLEY DEVELOPMENT L.P 1995-1997→ PIONEER NATURAL RES. USA, INC. 1997-1999→ PRIZE OPERATING COMPANY 1999-2001

Lease Production

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

Formation Tops (4) Elevation 270 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
TOP OF YEGUA (Yegua)	3,180 ft	-2,910 ft
YEGUA	3,180 ft	-2,910 ft
TOP OF WILCOX (Wilcox)	5,950 ft	-5,680 ft
WILCOX	5,950 ft	-5,680 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
10,054–10,069 ft	Perforated
10,073–10,089 ft	Perforated
10,095–10,103 ft	Perforated

Casing (3)

Size	Set Depth	Cement
10.75"	2,022 ft	660 sx
4.75"	2,022 ft	660 sx
7.625"	9,585 ft	732 sx

Permit History (2)

#736881 Recompletion

TREPTOW OU 2 · 8,300 ft

2012-05-10

#247947 Drill Final Completion

TREPTOW OIL UNIT #2 · 10,450 ft

1984-08-09

Spud 1984-08-19

Applications (3)

#736881 A PIONEER NATURAL RES. USA, INC.

received 2012-03-26

#247947 A HOWELL DRILLING, INC.

received 1986-04-18

#247947 A HOWELL DRILLING, INC.

received 1984-07-25

Records & Logs

5 completion filings on record.

W-2/G-1 1996-08-27

W-2/G-1 1996-10-07

W-2/G-1 1986-08-08

W-2/G-1 1985-01-03

W-2/G-1 1985-01-22

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 LAVACA County.

Well Details

Well Number: 2
Max Depth: 10,450 ft
Drill Type: Vertical
County: LAVACA
District: 2
Operator: PIONEER NATURAL RES. USA, INC.

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: 15,399