42-329-42631

PRODUCING Horizontal

ULVESTAD-BIRKHEAD E20I

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

2019-02-14

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 2,839 ft (KB)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SANTA ROSA 1,115 ft+1,724 ft
YATES 2,803 ft+36 ft
SEVEN RIVERS 3,030 ft-191 ft
QUEEN 3,858 ft-1,019 ft
GRAYBURG 4,495 ft-1,656 ft
SAN ANDRES - HIGH FLOWS, H2S, CO (San Andres)6,102 ft-3,263 ft
CLEARFORK (Clear Fork)6,992 ft-4,153 ft
SPRABERRY 7,865 ft-5,026 ft
SPRABERRY UPPER-DEAN (Spraberry)9,166 ft-6,327 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
42-329-42630 ULVESTAD-BIRKHEAD E20H · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,115'Yates 2,795'Seven Rivers 3,071'Queen 3,855'Grayburg 4,489'San Andres 4,672'Clear Fork 7,014'Spraberry 7,868'Spraberry 9,169'Glorieta
42-329-46081 CASS-ERNEST E20J · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,782'Seven Rivers 3,092'Queen 3,884'Grayburg 4,420'San Andres 4,626'Clear Fork 6,993'Spraberry 7,841'Atoka Strawn Pennsylvanian +4 more
42-329-42621 ULVESTAD-BIRKHEAD E20G · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,115'Yates 2,798'Seven Rivers 3,026'Queen 3,852'Grayburg 4,506'San Andres 4,672'Clear Fork 7,017'Spraberry 7,865'Spraberry 9,163'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
42-329-46082 CASS-ERNEST E20L · PIONEER NATURAL RES. USA, INC.
0.0 mi
Santa Rosa 1,141'Rustler 1,752'Yates 2,787'Seven Rivers 3,088'Queen 3,887'Grayburg 4,416'San Andres 4,602'Clear Fork 6,991'Spraberry 7,842'Atoka Strawn Pennsylvanian +4 more
42-329-42632 CASS-ERNEST E20M · PIONEER NATURAL RES. USA, INC.
0.1 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
42-329-42633 CASS-ERNEST E20N · PIONEER NATURAL RES. USA, INC.
0.1 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.
0.1 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

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
9,976–17,658 ftPerforated

Casing (3)

SizeSet DepthCement
13.375"1,677 ft1,720 sx
9.625"7,092 ft1,320 sx
5.5"17,693 ft800 sx

Permit History (1)

Applications (1)

#841282 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 2019-05-01 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 31.926620
Lon -102.099429

Well Details

Well Number
9H
Max Depth
10,450 ft
Drill Type
Horizontal
County
MIDLAND
District
8
Completed
2019-02-14

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