OPERATORS · RRC 526287 · P-5 STATUS Y
Mark IV Engy
San Antonio, TX
Watch this operatorMark IV Engy has filed no drilling permits in the past 12 months; its most recent permit was issued December 14, 2000.
The RRC wellbore file lists 11 wells under its operatorship.
104 drilling permits have been issued to this operator number since 1978; its P-5 organization report was last filed April 5, 2002.
- 0
- permits, last 12 months
- —
- vs prior 12 months (0)
- 0
- counties, 12 months
- 0
- producing wells, of 11 of record
- 0
- 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.
- 36%
- spud rate · 37 of 104 mature permits
- 40
- median days permit to spud · middle half 14–64
- 0
- spuds, last 180 days
- 3%
- cancelled · 3 permits
- 64
- expired undrilled
- 5
- permits a year over 23 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 |
|---|---|---|---|---|
| Wilson county → | — | 44 | 6 | Dec 14, 2000 |
| Atascosa county → | — | 7 | 0 | Apr 4, 1991 |
| Live Oak county → | — | 7 | 1 | Aug 11, 1989 |
| Starr county → | — | 7 | 1 | Aug 18, 1987 |
| Coke county → | — | 6 | 1 | Feb 1, 1982 |
| Duval county → | — | 6 | 1 | Jul 8, 1992 |
| Bexar county → | — | 5 | 0 | Sep 10, 1984 |
| McMullen county → | — | 4 | 0 | Jan 3, 1990 |
| Zavala county → | — | 4 | 0 | Oct 12, 1982 |
| Coleman county → | — | 2 | 0 | Jul 16, 1981 |
| San Patricio county → | — | 2 | 0 | Aug 14, 1990 |
| Wharton county → | — | 2 | 0 | Nov 23, 1987 |
| Bosque county → | — | 1 | 0 | Jan 12, 1993 |
| Dimmit county → | — | 1 | 0 | Nov 18, 1983 |
| Edwards county → | — | 1 | 0 | Jul 30, 1985 |
| Goliad county → | — | 1 | 0 | Jun 30, 1982 |
| Gonzales county → | — | 1 | 0 | Oct 12, 1983 |
| Hill county → | — | 1 | 0 | Jan 17, 1986 |
| Jim Wells county → | — | 1 | 0 | Nov 28, 1988 |
| Karnes county → | — | 1 | 0 | Aug 29, 1984 |
All 104 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 |
|---|---|---|
| Carrizo | 8 | 0 |
| Eagle Ford | 7 | 0 |
| Buda | 5 | 0 |
| Wilcox | 5 | 0 |
| Austin Chalk | 5 | 0 |
| Bartosh | 4 | 0 |
| Escondido | 3 | 0 |
| Del Rio | 2 | 0 |
| Queen City | 2 | 0 |
| Olmos | 1 | 0 |
| Reklaw | 1 | 0 |
| Navarro | 1 | 0 |
| Vicksburg | 1 | 0 |
| Frio | 1 | 0 |
| Miocene (undifferentiated) | 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
- 3.68K
- 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
- 11
- on the schedule
- 0
- producing
- 0
- shut in
- 0
- injection
- 0
- temp. abandoned
- 9
- plugged
How it got them
- 10
- permitted itself
- 1
- acquired from others
- 39
- 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 | 86 |
| Recompletion | 0 | 0 | 14 |
| Other | 0 | 0 | 4 |
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 |
|---|---|---|
| Sutil (Buda)87390500 | 2 | 0 |
| Blackwell8625001 | 1 | 0 |
| Cindy Ann (Austin Chalk Oil)18224510 | 1 | 0 |
| Debbie B. (Hockley)23786300 | 1 | 0 |
| Floresville E. (Austin Chalk)31554250 | 1 | 0 |
| Baylor (Frio 6657)6330500 | 1 | 0 |
| Kolle (2400 Sd.)50116600 | 1 | 0 |
| Poth North (Buda Lime)72624500 | 1 | 0 |
| Poth NW. (Buda)72627500 | 1 | 0 |
| Kalina (Frio)48077500 | 1 | 0 |
P-5 organization report
As registered with the RRC. About the P-5 →
- Registration
- Status code Y
- Last filed Apr 5, 2002
- Address
- P O Box 13411
- San Antonio, TX 78213
- Officers and agents
- Eidelbach, Mark · Sole Proprietor
Latest permits
NEWEST FIRST BY ISSUE DATE · FILED OR ON WELLS IT NOW OPERATES
| Permit | Seen | Issued | Operator | County | Lease / well | Depth | API |
|---|---|---|---|---|---|---|---|
| 502881 | Dec 14, 2000 | Dec 14, 2000 | Mark IV Energy | Wilson | Burton, et AL #1 | 2,950 | 49332500 |
| 490604 | Dec 23, 1999 | Dec 23, 1999 | Mark IV Energy | Wilson | McCloskey, R. B. et AL #1 | 7,700 | 49332489 |
| 408729 | Feb 4, 1993 | Feb 4, 1993 | Mark IV Energy | Wilson | Richter, Alex & Vera #1 | 7,000 | 49330927 |
| 407691 | Jan 12, 1993 | Jan 12, 1993 | Mark IV Energy | Bosque | Davis, Buck #1 | 7,500 | 03530099 |
| 400601 | Jul 8, 1992 | Jul 8, 1992 | Mark IV Energy | Duval | Graham-State #2 | 1,320 | 13137582 |
| 397932 | Mar 30, 1992 | Mar 30, 1992 | Mark IV Energy | Duval | Graham-State #1 | 1,500 | 13137554 |
| 391772 | Sep 17, 1991 | Sep 17, 1991 | Mark IV Energy | Wilson | Newman #1 | 5,100 | 49332311 |
| 386688 | Apr 12, 1991 | Apr 12, 1991 | Mark IV Energy | Wilson | Copeland, W. E. et al Estate OF #1 | 6,618 | 49330680 |
| 386375 | Apr 4, 1991 | Apr 4, 1991 | Mark IV Energy | Atascosa | Koehler Unit #1 | 4,100 | 01333960 |
| 386375 | Apr 4, 1991 | Apr 4, 1991 | Mark IV Energy | Atascosa | Koehler Unit #1 | 4,100 | 01333960 |
| 376406 | Aug 14, 1990 | Aug 14, 1990 | Mark IV Energy | San Patricio | Welder, James F. Heirs #1 | 10,000 | 40932350 |
| 370044 | Feb 21, 1990 | Feb 21, 1990 | Mark IV Energy | Atascosa | Vickers, Dawson et UX #1 | 5,700 | 01333934 |
| 368009 | Jan 3, 1990 | Jan 3, 1990 | Mark IV Energy | McMullen | Nichols #2 | 10,130 | 31132669 |
| 363026 | Aug 22, 1989 | Aug 22, 1989 | Mark IV Energy | Wilson | Kidd-Brown Unit #1 | 5,500 | 49332160 |
| 362594 | Aug 11, 1989 | Aug 11, 1989 | Mark IV Energy | Live Oak | Hinnant, William #5 | 5,300 | 29733884 |
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/526287, documented in the API reference.