42-329-42632

PRODUCING Horizontal

CASS-ERNEST E20M

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

Permits

1

Max Depth

10,450 ft

First Permit

2018-07-17

Latest Activity

2018-07-17

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-02-11

Shut-In

Plugged

P-5 Org Status: Active

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2019-02

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 2,835 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 1,133 ft+1,702 ft
YATES 2,793 ft+42 ft
SEVEN RIVERS 3,093 ft-258 ft
QUEEN 3,849 ft-1,014 ft
GRAYBURG 4,404 ft-1,569 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)4,667 ft-1,832 ft
CLEARFORK (Clear Fork)7,001 ft-4,166 ft
SPRABERRY UPPER-DEAN (Spraberry)7,848 ft-5,013 ft
SPRABERRY 8,769 ft-5,934 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
42-329-42633 CASS-ERNEST E20N · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,136'Yates 2,790'Seven Rivers 3,102'Queen 3,859'Grayburg 4,415'San Andres 4,671'Clear Fork 6,995'Spraberry 7,849'Spraberry 9,173'Glorieta
42-329-42634 CASS-ERNEST E20O · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,143'Yates 2,790'Seven Rivers 3,101'Queen 3,864'Grayburg 4,422'San Andres 4,675'Clear Fork 6,996'Spraberry 7,849'Spraberry 9,171'Glorieta
42-329-43006 CASS-ERNEST E20S · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,793'Seven Rivers 3,092'Queen 3,889'Grayburg 4,417'San Andres 4,609'Clear Fork 6,981'Spraberry 7,845'PRECAMBRIAN (UNDIFFERENTIATED) CAMBRIAN Ellenburger +1 more
42-329-43105 CASS-ERNEST E20X · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,787'Seven Rivers 3,093'Queen 3,887'Grayburg 4,415'San Andres 4,607'Clear Fork 6,998'Spraberry 7,847'Glorieta
42-329-43007 CASS-ERNEST E20R · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,786'Seven Rivers 3,090'Queen 3,885'Grayburg 4,417'San Andres 4,601'Clear Fork 6,988'Spraberry 7,837'Glorieta
42-329-46086 CASS-ERNEST E20W · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,792'Seven Rivers 3,095'Queen 3,890'Grayburg 4,416'San Andres 4,606'Clear Fork 6,996'Spraberry 7,843'Glorieta
42-329-46085 CASS-ERNEST E20V · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,783'Seven Rivers 3,093'Queen 3,886'Grayburg 4,416'San Andres 4,602'Clear Fork 6,999'Spraberry 7,857'Atoka Glorieta
42-329-46084 CASS-ERNEST E20U · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,788'Seven Rivers 3,089'Queen 3,886'Grayburg 4,415'San Andres 4,607'Clear Fork 7,003'Spraberry 7,844'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
9,984–17,646 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,641 ft1,525 sx
9.625"7,114 ft1,315 sx
5.5"17,680 ft805 sx

Permit History (1)

Applications (1)

#841283 A PIONEER NATURAL RES. USA, INC.
received 2018-06-15

Records & Logs

1 completion filing on record · 1 with log images at RRC.

W-2/G-1 2019-04-25 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 31.925417
Lon -102.098593

Well Details

Well Number
13H
Max Depth
10,450 ft
Drill Type
Horizontal
County
MIDLAND
District
8
Completed
2019-02-11

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