42-329-32404

Final Completion

WILLIS

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

Permits

1

Max Depth

9,000 ft

First Permit

1991-04-25

Latest Activity

1991-04-25

Lifespan

< 1 yr

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1991-10-03

Shut-In

Plugged

2011-04-13

!

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 (4) Elevation 2,690 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
REDBEDS300 ft+2,390 ft
UPPER SPRABERRY (Spraberry)7,382 ft-4,692 ft
LOWER SPRABERRY (Spraberry)8,092 ft-5,402 ft
DEAN 8,740 ft-6,050 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)

IntervalType
7,392–7,432 ftPerforated
8,105–8,331 ftPerforated
8,756–8,998 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"323 ft350 sx
8.625"5,000 ft1,200 sx
4.5"9,050 ft1,400 sx

Permit History (1)

Applications (1)

#387054 A COX, JOHN L.
received 1991-04-22

Records & Logs

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

W-2/G-1 1991-10-17 log on file
W-2/G-1 1991-11-05

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
6
Max Depth
9,000 ft
Drill Type
Vertical
County
MIDLAND
District
8
Completed
1991-10-03

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
15,429