42-461-41207

PRODUCING Horizontal

MARY 18-7A-D

UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA) R 40 EXC

Permits

2

Max Depth

10,050 ft

First Permit

2019-06-10

Latest Activity

2019-06-10

Lifespan

< 1 yr

Regulatory Status

Schedule

ON SCHEDULE

Completion

2019-11-02

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: productionPIONEER NATURAL RES. USA, INC.

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

2019-11

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 2,806 ft (GL)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
SAN ANDRES - SALTWATER FLOW (San Andres)4,573 ft-1,767 ft
CLEARFORK (Clear Fork)6,686 ft-3,880 ft
SPRABERRY 7,548 ft-4,742 ft
DEAN 8,898 ft-6,092 ft
WOLFCAMP 9,082 ft-6,276 ft
DEVONIAN
FUSSELMAN
GRAYBURG
STRAWN
YATES

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
42-461-41236 MARY 18-7A-C · PARSLEY ENERGY OPERATIONS, LLC
0.0 mi
San Andres 4,579'Clear Fork 6,686'Spraberry 7,551'Dean 8,902'Wolfcamp 9,087'Fusselman Devonian Strawn Grayburg Yates Ellenburger
42-461-41007 GRIFFIN 19-30-A · PARSLEY ENERGY OPERATIONS, LLC
0.2 mi
San Andres 4,601'Spraberry 7,521'Dean 8,902'Wolfcamp 9,084'Devonian Fusselman Ellenburger Strawn Grayburg Yates
42-461-41006 GRIFFIN 19-30-A · PARSLEY ENERGY OPERATIONS, LLC
0.2 mi
San Andres 4,601'Clear Fork 6,688'Spraberry 7,521'Dean 8,902'Wolfcamp 9,084'Strawn Fusselman Grayburg Yates Devonian
42-461-42342 MARY 18B · PIONEER NATURAL RES. USA, INC.
0.5 mi
Yates 2,632'Grayburg 4,315'San Andres 5,723'Clear Fork 6,693'Spraberry 7,567'Wolfcamp Fusselman Ellenburger Devonian Strawn
42-461-42343 MARY 18D · PIONEER NATURAL RES. USA, INC.
0.5 mi
Yates 2,629'Grayburg 4,305'San Andres 4,569'Clear Fork 6,695'Spraberry 7,567'Wolfcamp Devonian Strawn Ellenburger Fusselman
42-461-40973 ELLIE 20-29-D · PARSLEY ENERGY OPERATIONS, LLC
1.2 mi
San Andres 4,604'Clear Fork 6,681'Spraberry 7,561'Dean 8,930'Wolfcamp 9,117'Strawn Devonian Yates Grayburg Fusselman
42-461-40972 ELLIE 20-29-D · PARSLEY ENERGY OPERATIONS, LLC
1.2 mi
San Andres 4,604'Clear Fork 6,683'Spraberry 7,563'Wolfcamp 9,120'Fusselman Ellenburger Devonian Strawn Grayburg Yates
42-461-40971 ELLIE 20-29-D · PARSLEY ENERGY OPERATIONS, LLC
1.2 mi
San Andres 4,598'Clear Fork 6,686'Spraberry 7,566'Wolfcamp 9,123'Strawn Ellenburger Devonian Yates Fusselman Grayburg

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
9,662–19,760 ftPerforated

Casing (4)

SizeSet DepthCement
13.375"360 ft400 sx
9.625"7,950 ft950 sx
7,950 ft855 sx
5.5"19,848 ft1,420 sx

Permit History (2)

Applications (2)

#853543 A PARSLEY ENERGY OPERATIONS, LLC
received 2019-07-17
#853543 A PARSLEY ENERGY OPERATIONS, LLC
received 2019-05-28

Records & Logs

2 completion filings on record · 1 with log images at RRC.

W-2/G-1 2023-09-28
W-2/G-1 2020-03-20 log on file
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.

Lat 31.590223
Lon -102.017775

Well Details

Well Number
4307H
Max Depth
10,050 ft
Drill Type
Horizontal
County
UPTON
District
7
Completed
2019-11-02

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