42-329-42415

PRODUCING Horizontal

SHACKELFORD W31F

MIDLAND County · District 8 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA) R 40 EXC

Permits

2

Max Depth

10,660 ft

First Permit

2018-05-11

Latest Activity

2018-12-31

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2020-10-15

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2020-03

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 (16) Elevation 2,681 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 939 ft+1,742 ft
SANTA ROSA 971 ft+1,710 ft
YATES 2,502 ft+179 ft
YATES 2,503 ft+178 ft
SEVEN RIVERS 2,812 ft-131 ft
SEVEN RIVERS 2,813 ft-132 ft
QUEEN 3,535 ft-854 ft
GRAYBURG 4,074 ft-1,393 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)4,228 ft-1,547 ft
CLEARFORK (Clear Fork)6,480 ft-3,799 ft
CLEARFORK (Clear Fork)6,481 ft-3,800 ft
SPRABERRY 7,353 ft-4,672 ft
SPRABERRY 7,354 ft-4,673 ft
SPRABERRY UPPER-DEAN (Spraberry)8,756 ft-6,075 ft
SPRABERRY UPPER-DEAN (Spraberry)8,757 ft-6,076 ft
GLORIETA

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
42-329-42413 SHACKELFORD W3N · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 976'Yates 2,504'Yates 2,505'Seven Rivers 2,509'Seven Rivers 2,810'Queen 3,527'Grayburg 4,128'San Andres 4,265'Clear Fork 6,494'Spraberry 7,355'Spraberry 8,762'Wolfcamp 8,948' +1 more
42-329-42414 SHACKELFORD W3M · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 939'Santa Rosa 973'Yates 2,503'Seven Rivers 2,810'Queen 3,528'Queen 3,529'Grayburg 4,090'Grayburg 4,091'San Andres 4,277'San Andres 4,278'Clear Fork 6,495'Spraberry 7,362' +3 more
42-329-47382 SHACKELFORD 31-26A · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 937'Rustler 1,562'Yates 2,500'Seven Rivers 2,808'Queen 3,528'Grayburg 4,100'San Andres 4,226'Clear Fork 6,504'Spraberry 7,364'Glorieta
42-329-47383 SHACKELFORD 31-26B · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 937'Rustler 1,548'Yates 2,509'Seven Rivers 2,805'Queen 3,529'Grayburg 4,099'San Andres 4,221'Clear Fork 6,500'Spraberry 7,356'Glorieta
42-329-42418 SHACKELFORD W3R · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 951'Santa Rosa 986'Yates 2,520'Seven Rivers 2,820'Queen 3,544'Queen 3,545'Grayburg 4,164'Grayburg 4,165'San Andres 4,298'San Andres 4,299'Clear Fork 6,498'Spraberry 7,364' +3 more
42-329-42417 SHACKELFORD W3Q · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 951'Santa Rosa 991'Yates 2,521'Yates 2,522'Seven Rivers 2,820'Queen 3,544'Queen 3,545'Grayburg 4,160'Grayburg 4,161'San Andres 4,308'San Andres 4,309'Clear Fork 6,508' +6 more
42-329-42416 SHACKELFORD W3P · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 951'Santa Rosa 986'Yates 2,514'Yates 2,515'Seven Rivers 2,821'Queen 3,545'Queen 3,546'Grayburg 4,179'San Andres 4,294'San Andres 4,295'Clear Fork 6,506'Spraberry 7,378' +2 more
42-329-47384 SHACKELFORD 31-26C · PIONEER NATURAL RES. USA, INC.
0.2 mi
Santa Rosa 963'Rustler 1,584'Yates 2,528'Seven Rivers 2,829'Queen 3,547'Grayburg 4,116'San Andres 4,338'Clear Fork 6,525'Spraberry 7,386'Glorieta

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
9,593–19,179 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,372 ft1,350 sx
9.625"5,908 ft1,245 sx
5.5"19,800 ft1,010 sx

Permit History (2)

Applications (2)

#838127 A PIONEER NATURAL RES. USA, INC.
received 2019-10-04
#838127 A PIONEER NATURAL RES. USA, INC.
received 2018-03-28

Records & Logs

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

W-2/G-1 2022-11-08
W-2/G-1 2020-11-30 log on file
W-2/G-1 2020-07-22 log on file

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.

Lat 31.795046
Lon -101.925091

Well Details

Well Number
6H
Max Depth
10,660 ft
Drill Type
Horizontal
County
MIDLAND
District
8
Completed
2020-10-15

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
15,399