42-461-35362

Final Completion

XBC 21

UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)

Permits

Max Depth

10,000 ft

First Permit

2007-05-21

Latest Activity

2015-11-05

Lifespan

8 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2007-10-06

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2007-10

Last Production

2026-07

Lease Production

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

Formation Tops (6) Elevation 2,694 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
TOP UPPER SPRABERRY (Spraberry)	7,016 ft	-4,322 ft
TOP UPR SPRABERRY	7,016 ft	-4,322 ft
TOP LOWER SPRABERRY (Spraberry)	7,606 ft	-4,912 ft
TOP LWR SPRABERRY	7,606 ft	-4,912 ft
TOP DEAN (Dean)	8,354 ft	-5,660 ft
TOP WOLFCAMP (Wolfcamp)	8,632 ft	-5,938 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 (5)

Interval	Type
8,498–8,628 ft	Perforated
8,498–9,523 ft	Perforated
8,828–8,929 ft	Perforated
9,048–9,168 ft	Perforated
9,304–9,523 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	435 ft	300 sx
4.5"	9,697 ft	1,000 sx

Permit History (2)

#811601 Field Transfer Final Completion

XBC 21 · 9,704 ft

2015-11-05

Spud 2007-07-29

#639157 Drill Final Completion

XBC "21" · 10,000 ft

2007-05-21

Spud 2007-07-14

Applications (2)

#811601 A PIONEER NATURAL RES. USA, INC.

received 2015-10-29

#639157 A PIONEER NATURAL RES. USA, INC.

received 2007-05-16

Records & Logs

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

W-2/G-1 2016-01-19

W-2/G-1 2007-12-13 log on file

W-2/G-1 2008-01-03

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 UPTON County.

Well Details

Well Number: 212
Max Depth: 10,000 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: PIONEER NATURAL RES. USA INC.
Completed: 2007-10-06

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: 15,400