OPERATORS · RRC 520470 · P-5 STATUS Y

Mack Engy Co

Duncan, OK

Mack Engy CO has filed no drilling permits in the past 12 months; its most recent permit was issued December 13, 2005.

The RRC wellbore file lists 2 wells under its operatorship.

8 drilling permits have been issued to this operator number since 1993; its P-5 organization report was last filed December 6, 2019.

0: permits, last 12 months
—: vs prior 12 months (0)
0: counties, 12 months
0: producing wells, of 2 of record
2: leases it reports
—: horizontal, 12 months

WINDOWS ON THE RRC ISSUE DATE · COMPUTED OCT 29, 2026

From permit to spud

FROM THE DATES ON ITS W-1 PERMITS · ALL TIME

A permit is a plan, not a well. These figures count only permits old enough to have spudded, six months and more, and read the spud, cancel, and expiry dates the RRC records on each one.

63%: spud rate · 5 of 8 mature permits
56: median days permit to spud · middle half 24–92
0: spuds, last 180 days
0%: cancelled · 0 permits
3: expired undrilled
1: permits a year over 13 active years

Where

Counties by permits in the last 12 months, with all-time permits and current wells of record there.

County	12 mo	All time	Wells	Last
Grayson county →	—	6	2	Dec 13, 2005
Houston county →	—	2	0	Nov 24, 1993

All 8 permits, searchable → · Leases it reports → · On the map →

Formations in its completed wells

Tops reported on completion filings for wells it operates. RRC wellbore file. About tops →

Formation	Wells	Permitted last 3 yrs
Viola	1	0
Pennsylvanian	1	0
Atoka	1	0

Production by month

PDQ LEASE REPORTS · REPORTED THROUGH APR 2026

Barrels on leases where this operator filed the production report. Lease-level by design; the latest months are revised upward as late reports arrive. How production is reported →

0: bbl oil, last 12 reported months
—: vs the 12 months before
0: mcf gas incl. casinghead, last 12
113K: bbl oil since reporting began

No lease production reported under this operator number in the last three years.

Beyond the permit record

RRC wellbore file

Wells of record

2: on the schedule
0: producing
0: shut in
0: injection
0: temp. abandoned
0: plugged

How it got them

1: permitted itself
1: acquired from others
3: permitted, now run by others

Acquired means the well's permit names a different operator than the schedule does today. Transfers and operator numbers →

Permit types

Last 12 months against the prior 12, and all time. A type opens the permit history filtered to it. What the types mean →

Type	12 mo	Prior 12	All time
Drill	0	0	5
Recompletion	0	0	2
Reenter	0	0	1

Fields

RRC regulatory fields with the most wells of record under this operator. The field opens its page; the count opens this operator's wells in it.

Field	Wells	Producing
Perrin N. Afb (Penn. 10 362)70642400	1	0
Perrin N. Afb (Viola)70642600	1	0

P-5 organization report

As registered with the RRC. About the P-5 →

Registration: Status code Y; Last filed Dec 6, 2019

Address: P O Box 400; Duncan, OK 73534; (580) 252-5580

Officers and agents: Sammons, Martin Z., Jr. · Texas Resident Agent; McCasland, Tom H., III · President; McCasland, Tom H., Jr. · Vice President/Chairman; Fowler, Christopher K. · Vice President

Latest permits

NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES

Permit	Seen	Issued	Operator	County	Lease / well	Depth	API
609881	Dec 13, 2005	Dec 13, 2005	Mack Energy Co.	Grayson	Mc #1	10,300	18131394
554247	Dec 1, 2004	Dec 1, 2004	Mack Energy Co.	Grayson	Mc #1	10,300	18131394
554247	Dec 1, 2004	Dec 1, 2004	Mack Energy Co.	Grayson	Mc #1	10,300	18131394
545177	Apr 30, 2004	Apr 30, 2004	Samson Lone Star LP	Grayson	General Patton #1RD	10,700	18131379
541843	Mar 17, 2004	Mar 17, 2004	Mack Energy Co.	Grayson	Bryant #1	11,599	18102009
536500	Sep 16, 2003	Sep 16, 2003	Mack Energy Co.	Grayson	Gen. Patton #1	10,200	18131372
519703	May 7, 2002	May 7, 2002	Mack Energy Co.	Grayson	Bryant #1	11,700	18102009
418657	Nov 24, 1993	Nov 24, 1993	Mack Energy Co.	Houston	Sallas #1	11,500	22530889
409689	Mar 9, 1993	Mar 9, 1993	Mack Energy Co.	Houston	Turner, Julius #1	11,500	22530876

Full permit history →

About this data

Registration from the RRC P-5 organization report, refreshed weekly. Permits from the OGA049M master and daily daf420 files; wells of record from the EWA wellbore schedule; production from PDQ lease reports at the last vintage; disposal from UIC permits and H-10 reports. Summary figures are rebuilt nightly.

Developers: this page as JSON is GET /v1/data/operators/tx/520470, documented in the API reference.