42-329-45945

PRODUCING Horizontal

SHACKELFORD 40-12AB

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

Permits

2

Max Depth

10,475 ft

First Permit

2022-10-20

Latest Activity

2022-10-20

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2024-07-12

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2023-12

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 (12) Elevation 2,700 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 965 ft+1,735 ft
RUSTLER 1,604 ft+1,096 ft
YATES 2,515 ft+185 ft
SEVEN RIVERS 2,797 ft-97 ft
QUEEN 3,500 ft-800 ft
GRAYBURG 4,003 ft-1,303 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)4,103 ft-1,403 ft
CLEARFORK (Clear Fork)6,362 ft-3,662 ft
SPRABERRY 7,235 ft-4,535 ft
CAMBRIAN
ELLENBURGER
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
42-329-45944 SHACKELFORD 40-12H · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 965'Rustler 1,603'Yates 2,490'Seven Rivers 2,771'Queen 3,446'Grayburg 3,924'San Andres 4,013'Clear Fork 6,359'Spraberry 7,236'Glorieta
42-329-45943 SHACKELFORD 40-12G · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 965'Rustler 1,606'Yates 1,651'Yates 2,509'Seven Rivers 2,509'Seven Rivers 2,799'Queen 3,496'Grayburg 3,995'San Andres 4,087'Clear Fork 6,356'Spraberry 7,233'Glorieta
42-329-47373 SHACKELFORD 29-17Q · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,001'Rustler 1,612'Yates 2,513'Seven Rivers 2,794'Queen 3,499'Grayburg 4,003'San Andres 4,223'Clear Fork 6,362'Spraberry 7,236'Glorieta
42-329-47372 SHACKELFORD 29-17P · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,001'Rustler 1,624'Yates 2,536'Seven Rivers 2,832'Queen 3,577'Grayburg 4,179'San Andres 4,305'Clear Fork 6,514'Spraberry 7,401'Glorieta
42-329-47371 SHACKELFORD 29-17O · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,001'Rustler 1,606'Queen 2,498'Yates 2,518'Seven Rivers 2,805'Queen 3,498'Grayburg 4,101'San Andres 4,221'Clear Fork 6,340'Spraberry 7,228'Glorieta
42-329-47370 SHACKELFORD 29-17N · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,001'Rustler 1,622'Yates 2,530'Seven Rivers 2,808'Queen 3,516'Grayburg 4,086'San Andres 4,207'Clear Fork 6,349'Spraberry 7,236'Pennsylvanian Atoka PRECAMBRIAN (UNDIFFERENTIATED) +6 more
42-329-47369 SHACKELFORD 29-17M · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,001'Rustler 1,586'Yates 2,515'Seven Rivers 2,803'Queen 3,503'Grayburg 4,082'San Andres 4,209'Clear Fork 6,340'Spraberry 7,228'Spraberry 8,592'Wolfcamp 8,778'Glorieta +2 more
42-329-47368 SHACKELFORD 29-17L · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,001'Rustler 1,613'Yates 2,523'Seven Rivers 2,806'Queen 3,498'Grayburg 4,085'San Andres 4,208'Clear Fork 6,344'Spraberry 7,235'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
9,189–24,814 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,433 ft1,600 sx
9.625"5,587 ft1,033 sx
5.5"24,834 ft1,365 sx

Permit History (2)

Applications (2)

#883928 A PIONEER NATURAL RES. USA, INC.
received 2023-06-06
#883928 A PIONEER NATURAL RES. USA, INC.
received 2022-09-13

Records & Logs

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

W-2/G-1 2024-09-17
W-2/G-1 2024-05-12 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 31.804265
Lon -101.885920

Well Details

Well Number
9H
Max Depth
10,475 ft
Drill Type
Horizontal
County
MIDLAND
District
8
Completed
2024-07-12

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