42-461-32671

Final Completion

UPTON I FEE OIL UNIT

UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)

Permits

2

Max Depth

9,850 ft

First Permit

1987-08-14

Latest Activity

2015-11-12

Lifespan

28 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2015-08-29

Shut-In

Plugged

2021-12-15

!

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: ENDEAVOR ENERGY RESOURCES L.P.

Resolved via: schedulingPIONEER NATURAL RES. USA INC.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2023-01

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Formation Tops (10) Elevation 2,771 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SPRABERRY (TRND AR) (Spraberry)7,001 ft-4,230 ft
UPPER SPRABERRY (Spraberry)7,354 ft-4,583 ft
UPPER SPRABERRY (Spraberry)7,371 ft-4,600 ft
LOWER SPRABERRY (Spraberry)7,988 ft-5,217 ft
JOMILL8,223 ft-5,452 ft
JO MILL 8,243 ft-5,472 ft
DEAN 8,667 ft-5,896 ft
DEAN 8,760 ft-5,989 ft
WOLCAMP8,952 ft-6,181 ft
WOLFCAMP 8,967 ft-6,196 ft

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 ↗

Perforations (2)

IntervalType
7,371–8,963 ftPerforated
9,118–9,832 ftPerforated

Casing (3)

SizeSet DepthCement
11.75"400 ft525 sx
8.625"4,395 ft1,400 sx
5.5"9,080 ft1,125 sx

Permit History (2)

Applications (2)

#811823 A ENDEAVOR ENERGY RESOURCES L.P.
received 2015-11-09
#334529 A TEXACO INC.
received 1987-08-14

Records & Logs

5 completion filings on record · 3 with log images at RRC.

W-2/G-1 2015-12-16 log on file
W-2/G-1 1987-10-22 log on file
W-2/G-1 1988-03-04
W-2/G-1 1987-10-22 log on file
W-2/G-1 1987-10-30
Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in UPTON County.

Well Details

Well Number
6
Max Depth
9,850 ft
Drill Type
Vertical
County
UPTON
District
7
Completed
2015-08-29

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