42-317-43557

PRODUCING Horizontal

WELCH-COX W39O

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

Permits

1

Max Depth

10,606 ft

First Permit

2021-06-03

Latest Activity

2021-06-03

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2023-02-03

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2022-08

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 (11) Elevation 2,836 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 1,266 ft+1,570 ft
YATES 2,617 ft+219 ft
QUEEN 3,477 ft-641 ft
GRAYBURG 3,951 ft-1,115 ft
SAN ANDRES - ACTIVE CO2 FLOOD; H (San Andres)4,144 ft-1,308 ft
SPRABERRY 7,548 ft-4,712 ft
CISCO
DEAN
PENNSYLVANIAN
STRAWN
WOLFCAMP

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 ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section
42-317-43559 WELCH-COX W39P · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,266'Yates 2,616'Queen 3,482'Grayburg 3,953'San Andres 4,154'Spraberry 7,548'Pennsylvanian Dean Wolfcamp Cisco
42-317-43556 WELCH-COX W39N · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,266'Yates 2,619'Queen 3,481'Grayburg 3,953'San Andres 4,146'Spraberry 7,557'Ellenburger Pennsylvanian Wolfcamp PRECAMBRIAN (UNDIFFERENTIATED) Cisco Dean
42-317-43544 WELCH-COX W39M · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,266'Yates 2,617'Queen 3,480'Grayburg 3,968'San Andres 4,143'Spraberry 7,556'Dean Wolfcamp Cisco Pennsylvanian
42-317-43542 WELCH-COX W39L · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,266'Yates 2,617'Queen 3,479'Grayburg 3,965'San Andres 4,149'Spraberry 7,564'Cisco Dean Pennsylvanian Wolfcamp
42-317-43541 WELCH-COX W39K · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,266'Yates 2,613'Queen 3,477'Grayburg 3,956'San Andres 4,152'Spraberry 7,562'Pennsylvanian Wolfcamp Cisco Dean
42-317-43561 WELCH-COX W39J · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 1,266'Yates 2,605'Queen 3,474'Grayburg 3,924'San Andres 4,130'Spraberry 7,542'Dean 8,850'Wolfcamp 9,061'Cisco Pennsylvanian
42-317-43558 WELCH-COX W39I · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 1,266'Yates 2,608'Queen 3,472'Grayburg 3,947'San Andres 4,158'Spraberry 7,546'Dean 8,848'Wolfcamp 9,060'Cisco Pennsylvanian
42-317-43563 WELCH-COX W39H · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 1,266'Yates 2,608'Queen 3,469'Grayburg 3,921'San Andres 4,128'Spraberry 7,548'Dean 8,852'Wolfcamp 9,060'Cisco Pennsylvanian

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (1)

IntervalType
8,194–18,077 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,703 ft1,750 sx
9.625"5,650 ft1,255 sx
5.5"18,092 ft2,260 sx

Permit History (1)

Applications (1)

#869614 A PIONEER NATURAL RES. USA, INC.
received 2021-05-05

Records & Logs

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

W-2/G-1 2023-05-15
W-2/G-1 2023-01-10 log on file
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.

Lat 32.260138
Lon -101.947020

Well Details

Well Number
215H
Max Depth
10,606 ft
Drill Type
Horizontal
County
MARTIN
District
8
Completed
2023-02-03

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
15,400