42-329-34309

Final Completion

WILLIS

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

Permits

1

Max Depth

9,100 ft

First Permit

2000-05-25

Latest Activity

2000-05-25

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2001-01-19

Shut-In

Plugged

2026-05-01

!

EWA / Production operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Production: DE3 OPERATING LLC (reported 2019-11)

!

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: COX, JOHN L.

Resolved via: schedulingPIONEER NATURAL RES. USA INC.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2026-05

Lease Production

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

Formation Tops (3) Elevation 2,683 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
REDBEDS300 ft+2,383 ft
UPPER SPRABERRY (Spraberry)7,360 ft-4,677 ft
LOWER SPRABERRY (Spraberry)8,036 ft-5,353 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 (2)

IntervalType
8,048–8,303 ftPerforated
8,745–8,995 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"342 ft370 sx
8.625"5,233 ft1,000 sx
4.5"9,050 ft1,400 sx

Permit History (1)

Applications (1)

#495418 A COX, JOHN L.
received 2000-05-24

Records & Logs

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

W-2/G-1 2001-01-31 log on file
W-2/G-1 2001-07-16

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
8
Max Depth
9,100 ft
Drill Type
Vertical
County
MIDLAND
District
8
Completed
2001-01-19

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
15,425