42-173-33441

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MILLS 37B

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

Permits

1

Max Depth

10,800 ft

First Permit

2008-09-25

Latest Activity

2008-09-25

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2009-04-24

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2009-04

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 (4) Elevation 2,640 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
TOP UPPER SPRABERRY (Spraberry)6,974 ft-4,334 ft
TOP LOWER SPRABERRY (Spraberry)7,474 ft-4,834 ft
TOP DEAN (Dean)8,290 ft-5,650 ft
BASE DEAN (Dean)8,478 ft-5,838 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 (6)

IntervalType
6,997–7,099 ftPerforated
7,310–7,495 ftPerforated
7,821–8,071 ftPerforated
8,361–7,099 ftPerforated
8,609–8,798 ftPerforated
9,204–9,416 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"341 ft250 sx
4.5"9,556 ft850 sx

Permit History (1)

Applications (1)

#670812 A PIONEER NATURAL RES. USA, INC.
received 2008-09-09

Records & Logs

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

W-2/G-1 2009-06-08 log on file
W-2/G-1 2009-09-21

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 GLASSCOCK County.

Well Details

Well Number
1
Max Depth
10,800 ft
Drill Type
Vertical
County
GLASSCOCK
District
8
Completed
2009-04-24

Operator

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
15,401