42-461-39948

INJECTION

MILDRED 34

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

Permits

1

Max Depth

5,700 ft

First Permit

2014-11-19

Latest Activity

2014-11-19

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2025-10-01

Shut-In

Plugged

P-5 Org Status: Active

!

EWA / Permit operator mismatch

Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: PARSLEY ENERGY OPERATIONS, LLC

Resolved via: schedulingPIONEER NATURAL RES. USA INC.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2016-03

Last Production

2026-07

W-14 Disposal Active UIC #000111229 permitted 2018-03-14

Permitted Volume

25,000 bbl/d

Max Pressure

2,000 psi

Injection Interval

4,100–5,200 ft

Injected (12mo)

832,269 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-11-01)

Operator History

originally filed by PARSLEY ENERGY OPERATIONS, LLC — asset transferred

Lease Production

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

Formation Tops (9) Elevation 2,743 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
YATES 2,467 ft+276 ft
GRAYBURG 4,011 ft-1,268 ft
SAN ANDRES - SALTWATER FLOW (San Andres)4,124 ft-1,381 ft
DEVONIAN
ELLENBURGER
FUSSELMAN
SPRABERRY
STRAWN
WOLFCAMP

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 (1)

IntervalType
4,133–5,200 ftPerforated

Casing (2)

SizeSet DepthCement
13.375"437 ft450 sx
8.625"5,320 ft1,960 sx

Permit History (1)

Applications (1)

#800483 A PARSLEY ENERGY OPERATIONS, LLC
received 2014-11-19

Records & Logs

2 completion filings on record.

W-2/G-1 2025-10-06
W-2/G-1 2016-03-10
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
1D
Max Depth
5,700 ft
Drill Type
Vertical
County
UPTON
District
7
Completed
2025-10-01

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
15,468