42-329-42634

PRODUCING Horizontal

CASS-ERNEST E20O

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

2019-02-10

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 1,143 ft+1,692 ft
YATES 2,790 ft+45 ft
SEVEN RIVERS 3,101 ft-266 ft
QUEEN 3,864 ft-1,029 ft
GRAYBURG 4,422 ft-1,587 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)4,675 ft-1,840 ft
CLEARFORK (Clear Fork)6,996 ft-4,161 ft
SPRABERRY 7,849 ft-5,014 ft
SPRABERRY UPPER-DEAN (Spraberry)9,171 ft-6,336 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
42-329-43006 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'Glorieta PRECAMBRIAN (UNDIFFERENTIATED) CAMBRIAN +1 more
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
42-329-43105 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
42-329-42632 CASS-ERNEST E20M · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,133'Yates 2,793'Seven Rivers 3,093'Queen 3,849'Grayburg 4,404'San Andres 4,667'Clear Fork 7,001'Spraberry 7,848'Spraberry 8,769'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
9,960–17,622 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,624 ft1,525 sx
9.625"6,989 ft1,205 sx
5.5"17,656 ft795 sx

Permit History (1)

Applications (1)

#841286 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 2019-04-24 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 31.925445
Lon -102.098468

Well Details

Well Number
15H
Max Depth
10,450 ft
Drill Type
Horizontal
County
MIDLAND
District
8
Completed
2019-02-10

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