42-163-31711

U Horizontal

PANTHER HOLLOW -F-

FRIO County · District 1 · ORYX ENERGY COMPANY · PEARSALL (AUSTIN CHALK)

Permits

Max Depth

7,200 ft

First Permit

1979-09-10

Latest Activity

1991-10-23

Lifespan

12 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1979-10-05

Shut-In

—

Plugged

1995-02-14

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

1997-06

Lease Production

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

Oil

production & DCA →

Formation Tops (3) Elevation 500 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
OLMOS "B" (Olmos)	4,812 ft	-4,312 ft
ANACACHO	5,400 ft	-4,900 ft
AUSTIN CHALK	5,785 ft	-5,285 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)

Interval	Type
5,526–8,480 ft	Perforated
5,794–6,198 ft	Perforated

Casing (4)

Size	Set Depth	Cement
8.625"	342 ft	240 sx
2.375"	6,000 ft	—
4.5"	6,245 ft	925 sx
4.5"	6,275 ft	925 sx

Permit History (2)

#393164 Recompletion U

PANTHER HOLLOW · 5,928 ft

1991-10-23

Spud 1991-10-20

#57521 Drill Final Completion

FEE "F" · 7,200 ft

1979-09-10

Spud 1979-09-12

Applications (2)

#393164 A ORYX ENERGY COMPANY

received 1991-10-23

#57521 A PANTHER HOLLOW RANCH, LTD

received 1979-09-10

Records & Logs

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

W-2/G-1 1992-09-21 log on file

W-2/G-1 1979-11-28

W-2/G-1 1989-09-29

W-2/G-1 1979-11-28

Completion packets + logs ↗ Wellbore filings ↗

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.

No GPS coordinates yet

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

Well Details

Well Number: 21
Max Depth: 7,200 ft
Drill Type: Horizontal
County: FRIO
District: 1
Operator: ORYX ENERGY COMPANY
Completed: 1979-10-05

Operator

Name: SANCHEZ-O'BRIEN OIL & GAS CORP
Location: DALLAS
P-5 Status: Inactive (filed 1998-03-27)
Cum Oil (all leases): 48,027,931 bbl
Cum Gas (all leases): 270,942,656 mcf
Total Permits: 1,627