42-329-45947

PRODUCING Horizontal

SHACKELFORD 40-12AG

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

2024-07-13

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2024-01

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 (10) 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 2,514 ft+186 ft
SEVEN RIVERS 2,801 ft-101 ft
QUEEN 3,504 ft-804 ft
GRAYBURG 3,982 ft-1,282 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)4,072 ft-1,372 ft
CLEARFORK (Clear Fork)6,355 ft-3,655 ft
SPRABERRY 7,233 ft-4,533 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
42-329-45948 SHACKELFORD 40-12L · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 965'Rustler 1,604'Yates 2,512'Seven Rivers 2,800'Queen 3,501'Grayburg 3,987'San Andres 4,077'Clear Fork 6,350'Spraberry 7,229'Glorieta
42-329-45946 SHACKELFORD 40-12J · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 965'Rustler 1,605'Yates 2,513'Seven Rivers 2,805'Queen 3,501'Grayburg 3,986'San Andres 4,077'Clear Fork 6,355'Spraberry 7,230'Glorieta
42-329-47364 SHACKELFORD 29-17G · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,002'Rustler 1,598'Yates 2,486'Seven Rivers 2,753'Queen 3,385'Grayburg 3,853'San Andres 4,061'Clear Fork 6,014'Spraberry 6,887'Spraberry 8,267'Wolfcamp 8,495'Glorieta +4 more
42-329-47365 SHACKELFORD 29-17H · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,002'Rustler 1,604'Yates 2,509'Seven Rivers 2,798'Queen 3,487'Grayburg 4,099'San Andres 5,562'Clear Fork 6,398'Spraberry 7,262'Glorieta
42-329-47358 SHACKELFORD 29-17I · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,002'Rustler 1,603'Yates 2,507'Seven Rivers 2,795'Queen 3,490'Grayburg 4,011'San Andres 4,251'Clear Fork 6,380'Spraberry 7,257'Glorieta
42-329-47366 SHACKELFORD 29-17J · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,002'Rustler 1,604'Yates 2,512'Seven Rivers 2,798'Queen 3,491'Grayburg 4,084'San Andres 4,248'Clear Fork 6,379'Spraberry 7,259'Glorieta
42-329-47367 SHACKELFORD 29-17K · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,002'Rustler 1,580'Yates 2,511'Seven Rivers 2,796'Queen 3,493'Grayburg 4,012'San Andres 4,237'Clear Fork 6,368'Spraberry 7,244'Glorieta
42-329-45945 SHACKELFORD 40-12I · PIONEER NATURAL RES. USA, INC.
0.1 mi
Santa Rosa 965'Rustler 1,604'Yates 2,515'Seven Rivers 2,797'Queen 3,500'Grayburg 4,003'San Andres 4,103'Clear Fork 6,362'Spraberry 7,235'Ellenburger Glorieta CAMBRIAN

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
9,958–25,583 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,443 ft1,600 sx
9.625"5,957 ft1,100 sx
5.5"25,602 ft1,909 sx

Permit History (2)

Applications (2)

#883930 A PIONEER NATURAL RES. USA, INC.
received 2023-06-06
#883930 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 2024-06-28 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 31.803429
Lon -101.885070

Well Details

Well Number
33H
Max Depth
10,475 ft
Drill Type
Horizontal
County
MIDLAND
District
8
Completed
2024-07-13

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