42-461-32597

Final Completion

PEGASUS ELLENBURGER UNIT

UPTON County · District 7 · XTO ENERGY INC. · PEGASUS (ELLENBURGER)

Permits

Max Depth

13,500 ft

First Permit

1986-09-19

Latest Activity

2000-09-08

Lifespan

14 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1999-02-01

Shut-In

—

Plugged

2025-02-28

EWA / Permit operator mismatch

Scheduling: XTO ENERGY INC. ≠ Permit: MOBIL PRODUCING TX. & N.M. INC.

Resolved via: production → XTO ENERGY INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

MOBIL PRODUCING TX. & N.M. INC. 1993-2011→ XTO ENERGY INC. 2012-2026

Lease Production

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

Formation Tops (11) Elevation 2,871 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
UPPER SPRABERRY (Spraberry)	7,599 ft	-4,728 ft
LOWER SPRABERRY (Spraberry)	8,230 ft	-5,359 ft
WOLFCAMP	9,105 ft	-6,234 ft
STRAWN	10,057 ft	-7,186 ft
BEND	10,246 ft	-7,375 ft
WOODFORD	11,206 ft	-8,335 ft
DEVONIAN	11,313 ft	-8,442 ft
FUSSELMAN	12,048 ft	-9,177 ft
MONTOYA	12,166 ft	-9,295 ft
SIMPSON	12,275 ft	-9,404 ft
ELLENBURGER	12,699 ft	-9,828 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 (5)

Interval	Type
11,720–11,956 ft	Perforated
12,820–12,880 ft	Perforated
12,995–13,130 ft	Open hole
12,995–13,158 ft	Open hole
12,996–13,160 ft	Perforated

Casing (6)

Size	Set Depth	Cement
20"	442 ft	1,025 sx
20"	442 ft	—
13.375"	4,900 ft	3,700 sx
13.375"	4,900 ft	—
9.625"	9,800 ft	1,875 sx
9.625"	9,800 ft	—

Permit History (2)

#499307 Recompletion Final Completion

PEGASUS FIELD UNIT #3 · 13,400 ft

2000-09-08

Spud 2001-02-02

#320749 Drill Final Completion

PEGASUS ELLENBURGER UNIT · 13,500 ft

1986-09-19

Applications (2)

#499307 A MOBIL PRODUCING TX. & N.M. INC.

received 2000-09-06

#320749 A MOBIL PRODUCING TX. & N.M. INC.

received 1986-09-18

Records & Logs

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

W-2/G-1 2001-04-20

W-2/G-1 2001-05-07

W-2/G-1 1999-03-11

W-2/G-1 1988-09-13

W-2/G-1 1988-02-16 log on file

W-2/G-1 1988-02-25

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: 1610
Max Depth: 13,500 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: XTO ENERGY INC.
Completed: 1999-02-01

Operator

Name: XTO ENGY INC
Location: SPRING
P-5 Status: X (filed 2026-04-08)
Cum Oil (all leases): 772,419,164 bbl
Cum Gas (all leases): 11,039,899,986 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 16,138