42-081-30990

MATHERS, C.E.

COKE County · District 7 · ORYX ENERGY COMPANY

Permits

Max Depth

6,700 ft

First Permit

1981-03-09

Latest Activity

1995-09-06

Lifespan

14 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

ORYX ENERGY COMPANY 1993-1999→ KERR-MCGEE CORPORATION 1999-1999→ KERR-MCGEE OIL & GAS ONSHORE LLC 1999-2002→ AETHON I LP 2002-2007→ SHERIDAN PRODUCTION COMPANY, LLC 2007-2020→ FDL OPERATING, LLC 2020-2022→ CITATION OIL & GAS CORP. 2022-2026

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 (5) Elevation 2,028 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
BASE COLEMAN JUNCTION (Coleman Junction)	3,462 ft	-1,434 ft
BASE CISCO LIME (Cisco)	4,287 ft	-2,259 ft
JAMESON SANDS	5,763 ft	-3,735 ft
REEF	6,015 ft	-3,987 ft
JAMESON REEF	6,076 ft	-4,048 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
6,015–6,436 ft	Perforated
6,076–6,090 ft	Perforated
6,076–6,436 ft	Perforated
6,256–6,436 ft	Perforated
6,356–6,436 ft	Perforated

Casing (3)

Size	Set Depth	Cement
9.625"	516 ft	350 sx
2.875"	6,311 ft	—
7"	6,500 ft	1,000 sx

Permit History (3)

#439484 Recompletion

MATHERS, C.E. · 6,000 ft

1995-09-06

#386159 Recompletion U

MATHERS, C. E. · 6,500 ft

1991-03-27

#111368 Drill Final Completion

JAMESON REEF UNIT · 6,700 ft

1981-03-09

Spud 1981-03-30

Applications (3)

#439484 A ORYX ENERGY COMPANY

received 1995-08-31

#386159 A ORYX ENERGY COMPANY

received 1991-03-27

#111368 A SUN EXPL. & PROD. CO.-MIDLAND

received 1981-03-09

Records & Logs

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

W-2/G-1 2025-06-11

W-2/G-1 1993-05-14

W-2/G-1 1991-05-03 log on file

W-2/G-1 1987-11-20

W-2/G-1 1981-06-19

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 COKE County.

Well Details

Well Number: 61
Max Depth: 6,700 ft
Drill Type: Vertical
County: COKE
District: 7
Operator: ORYX ENERGY COMPANY

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